In many of the procedures, you access the Agent Configuration Utility and navigate through various menus to configure your SwitchProbe device to best suit your monitoring needs.

Changing the Read Community Name

A community name is a tool that SNMP uses to authorize communication between devices. Authorization is based on the commonality of the community name of each device. Devices with the same read community name—for example, look—can obtain (get) information from each other.

The importance of a community name and its security function is evident when you consider the communication between a SwitchProbe device and a management station. If the read community name established for a device is different than the read community name established at the management station, the management station cannot obtain information from that SwitchProbe device.

The read community name can be any 32-byte ASCII character string. The default value
is public.

To change the read community name, follow these steps:

Step 1 From the Agent Configuration Utility main menu, enter 4 and press Enter.

Step 2 Enter the name you want to assign as the read community name and press Enter.

The Agent Configuration Utility main menu is displayed again with the new name in the read community field. However, this new name does not take effect until you reboot or reset the device. To do so, see "Resetting a SwitchProbe Agent."

Note In addition to any read community name you establish in a SwitchProbe device, the inherent read community name is public. Therefore, you can achieve read access to the device from a management station by matching the specified read community name of the device or by using the name public.

The following example shows the Agent Configuration Utility main menu:

***** Ethernet SwitchProbe Rev 4.7 *****
 
Interface number : 1
 
[1]  Change IP Address                  192.168.143.219
[2]  Change Net Mask                    255.255.255.192
[3]  Change Default Gateway Address     192.168.143.193
[4]  Change Read Community              public
[5]  Change Write Community             public
 
[8]  Select Interface                   ETHERNET
[9]  Change Server Address              192.168.143.253
[10] Upgrade Software
[11] Enter Command-line mode
[12] Reset Agent
 
[31] Go to Next Page
 
          Enter your response or hit Esc to Abort
 
Selection#: 4
New Read Community [public]:

Changing the Write Community Name

A community name is a tool that SNMP uses to authorize communication between devices. Authorization is based upon the commonality of the community name of each device. Devices with the same write community name—for example, tell—can send (set) information to each other.

The importance of a community name and its security function is evident when you consider the communication between a SwitchProbe device and a management station. If the write community name established for a device is different than the write community name established at the management station, the management station cannot send information to that SwitchProbe device.

The write community name can be any 32-byte ASCII character string. The default value is public.

To change the write community name, follow these steps:

Step 1 From the Agent Configuration Utility main menu, enter 5 and press Enter.

Step 2 Enter the name you want to assign as the write community name and press Enter.

The Agent Configuration Utility main menu is displayed again with the new name in the write community field. However, this new name does not take effect until you reboot or reset the device. To do so, see "Resetting a SwitchProbe Agent."

Changing the Server Address

The Change Server Address option lets you enter or modify the IP address that identifies the system the SwitchProbe device accesses by default in the following instances:

The default destination of all SNMP traps generated by the device.
The system from which the device requests firmware upgrades.

The SwitchProbe device can automatically download configuration information (such as domains, properties files, and so on) from the TrafficDirector application when the device reboots or resets.

The server IP address identifies the system to which the SwitchProbe device sends configuration requests when the device reboots or resets.

To enter or modify the server IP address, follow these steps:

Step 1 From the Agent Configuration Utility main menu, enter 9 and press Enter.

Step 2 Enter the IP address of the desired server and press Enter.

The Agent Configuration Utility main menu is displayed again with the new address in the server address field. This new address takes effect immediately.

Resetting a SwitchProbe Agent

Most changes to a SwitchProbe agent settings do not take effect until you reset the agent. Therefore, if you make changes to the agent settings, you must reset the agent before you exit the Agent Configuration Utility.

To reset a SwitchProbe agent, follow these steps:

Step 1 Access the Agent Configuration Utility.

Step 2 Enter 12 and press Enter.

The following message is displayed:

WARNING: agent will be reset, confirm [n]

To save the new settings, go to Step 3; otherwise, go to Step 4.

Step 3 Enter y and press Enter to save the new settings.

The device reboots with the new settings.

Note

Step 4 If you do not want to save the new agent settings, enter n and press Enter

Note The new settings remain in their respective fields and appear to be in effect; however, the settings previously in the device when it was last reset are applied.

Selecting the Probe Mode (Multiport Fast Ethernet and Gigabit Ethernet Devices)

When you use the Select Probe Mode option, the following options are displayed:

Change probe mode:
 
[0] Half-duplex   Mode
[1] Full-duplex			   Mode
[2] Mixed duplex  Mode
 
New Probe Mode [1]:

These options allow you to set the mode of the Multiport Fast Ethernet or Gigabit Ethernet interfaces.

To select the mode, follow these steps:

Step 1 Access the Agent Configuration Utility.

Step 2 To go to the next page, enter 31 and press Enter.

Step 3 To select the probe mode, enter 23 and press Enter.

Step 4 Enter the desired option number and press Enter.

The Agent Configuration Utility main menu is displayed again. The values do not take effect until you reboot or reset the device. To do so, see "Resetting a SwitchProbe Agent."

Selecting the Interface

All SwitchProbe devices contain more than one interface. The selected interface number is always displayed in the upper left portion of the Agent Configuration Utility menu. The topology of that interface is displayed next to the Select Interface menu option.

To modify the parameters of a SwitchProbe interface, you must first select that interface. If the selected interface is not the interface you want, you must select the correct interface.

To do so, follow these steps:

Step 1 From the Agent Configuration Utility main menu, enter 8 and press Enter.

The Select Interface Screen is displayed:

Selection# 8

 
Select the interface:
 
[1] ETHERNET             MODE = MANAGE + MONITOR
[2] SERIAL               MODE = MANAGE
[3] ETHERNET             MODE = MONITOR
 
New interface [1]:

A list containing the interface number, topology, and mode of each of the interfaces is displayed. The number of the selected interface is displayed next to the New Interface label at the bottom of the screen.

Step 2 Select a different interface by entering the interface number.

For example, if a WAN interface is identified as interface 3, enter 3 and press Enter. If the interface you want is already selected, press Enter.

The Agent Configuration Utility main menu is displayed again. The number of the selected interface is displayed in the upper left area of the screen (next to the interface number label).

Changing the Interface Mode

SwitchProbe devices use network interfaces to receive network traffic or to exchange management data with a management station—or to perform both tasks simultaneously. Each interface in a SwitchProbe device is set to a default mode when it is manufactured.

The task that an interface performs is determined by the interface mode—manage, monitor, or manage + monitor.

Table 7-1 describes the interface modes.

Table 7-1: Interface Modes

This Mode...	Performs This Function
Manage	Exchanges (sends and receives) management data with an attached management station.
Monitor	Receives network traffic for mapping statistical information into standard RMON-based counters.
Manage + monitor	Exchanges management data and receives network traffic on the same interface.

Note For detailed information about each network interface (including interface number, topology, and default settings) see "Physical Description."

The Configure Interface Options (option 14) of the Agent Configuration Utility main menu lets you change the mode of the currently selected interface.

To change the mode, follow these steps:

Step 1 Access the Agent Configuration Utility.

Step 2 Verify the interface in the Select Interface field.

If the interface you want to configure is displayed in this field, proceed to Step 3.

Otherwise, select the interface you want to configure. For more information, see "Selecting the Interface."

Step 3 At the Selection # prompt, enter 14 and press Enter.

The interface options menu is displayed. The number of the currently selected interface is listed next to the interface number label.

Note

"Assigning Interface Numbers"

Step 4 To toggle the setting of the interface manage mode, enter 16 and press Enter.

The setting changes to the opposite value (on to off, or off to on).

Step 5 To toggle the setting of the interface monitor mode, enter 17 and press Enter.

The setting changes to the opposite value (on to off, or off to on).

Note

The interface options menu is displayed again and any new values are displayed in the manage mode or monitor mode fields. However, changes do not take effect until you exit the interface options menu.

Step 6 Enter 18 and press Enter.

Step 7 Reset the SwitchProbe agent. To do so, see "Resetting a SwitchProbe Agent."

Assigning Interface Numbers

Each interface in a SwitchProbe device is assigned an interface number. Because every SwitchProbe device has at least one network interface card (NIC) and only one PCC card, Cisco Systems assigns interface 1 and interface 2 to these interfaces, respectively.

Interface 1—Always the default management interface. Depending on the model, this interface is either Ethernet or Token Ring.
Interface 2—Always the Serial Line Internet Protocol (SLIP) port. This port is labeled Remote on the PCC card.

Note If a SwitchProbe device has more than one NIC, interface numbers 3 and above are assigned to each additional NIC.

Managing Non-Critical Hosts in Hosts and Conversations Tables

In prior releases of the firmware, the aging algorithm would age out (delete) host and conversation entries when the aging_interval had elapsed. If a host table was full, no additional hosts were counted until the next time the aging_interval elapsed.

The aging algorithm in the Gigabit Ethernet SwitchProbe firmware now manages noise (non-critical) hosts in the hosts and conversation tables, freeing up space in the host and conversation tables. By doing so, the host and conversation tables can contain the more critical host and conversation data.

To implement the modified aging algorithm, you must assign values to these aging parameters:

min_aging
age_check_interval
noise_threshold

Note You can only assign values to these aging parameters using the Change RMON2 Parameters menu in the Agent Configuration Utility.

To learn the role of each parameter in the aging algorithm, see "How the Aging Algorithm Operates."

Table 7-2 describes each aging algorithm parameter.

How the Aging Algorithm Operates

A host is removed from the host or conversation table occurs only when one of these conditions exists:

The host has not seen any data in or out in the past min_aging period.

At every age_check_interval, the host has consistently seen an amount of data during each min_aging period that is less than the noise_threshold.

For example, if the aging parameters are set to the following values, and the host sends a ping packet every 300 seconds, the host is initially seen in the host table:

min_aging—10800 seconds
age_check_interval—300 seconds
noise_threshold—3000 bytes per age_check_interval

However, because the host does not send more than 3000 bytes during a 300-second interval, upon reaching the min_aging period of 10800 seconds (three hours), the host is deleted from the host table.

If, after one hour, the same host sends an FTP data packet at a rate of 10000 bytes in
300 seconds, then resumes a ping process at a rate of 64 bytes every 300 seconds—
but during the next three hour period sees data at a rate that is less than 3000 bytes in a 300-second interval—then, upon reaching the min_aging period of 10800 seconds (three hours) since the FTP data packet passed through, the host is deleted from the host table.

The noise_threshold check determines whether any host has sustained minimum traffic within the min_aging period.

Table 7-2 describes the aging parameters.

Table 7-2: Aging Parameters

Parameter	Description
min_aging	The number of seconds that a host containing noise can occupy the host/ conversation table. Upon reaching the min_aging period, a host containing noise is deleted. Values range from 300 (default) to 86400 seconds (5 minutes to 24 hours).
age_check_interval	The frequency (in seconds) at which the aging algorithm is invoked. Values range from 300 (default) to 21600 (5 minutes though 6 hours).
noise_threshold	The minimum number of bytes that should be seen at each `age_check_interval` to distinguish the host as vital versus noisy. If the host does not meet this minimum setting, it is considered noisy and is deleted from the host/conversation table when the next min_aging period expires. Values range from 0 (default, causing the aging algorithm to never check for noise) to 10000.

Parameter

Description

min_aging

The number of seconds that a host containing noise can occupy the host/ conversation table. Upon reaching the min_aging period, a host containing noise is deleted.

Values range from 300 (default) to 86400 seconds (5 minutes to 24 hours).

age_check_interval

The frequency (in seconds) at which the aging algorithm is invoked.

Values range from 300 (default) to 21600 (5 minutes though 6 hours).

noise_threshold

The minimum number of bytes that should be seen at each age_check_interval to distinguish the host as vital versus noisy. If the host does not meet this minimum setting, it is considered noisy and is deleted from the host/conversation table when the next min_aging period expires.

Values range from 0 (default, causing the aging algorithm to never check for noise) to 10000.

Configuring Special Interface Options

WAN, Fast Ethernet, and ATM SwitchProbe devices contain special interface options, described in the following sections:

Configuring Special Interface Options—WAN

The Configure Interface Options menu contains additional options when you select a WAN interface. These options let you customize a WAN interface to monitor Frame Relay data.

To accurately monitor the selected WAN Frame Relay segment, you must verify that the WAN interface is correctly configured for the network segment you are monitoring. For more information, see "Monitoring DLCIs on WAN SwitchProbe Devices" in "Monitoring WAN DLCIs and ATM VPIs/VCIs."

Table 7-3 describes the options in the menu for monitoring WAN Frame Relay segments.

Table 7-3: Special Interface Options for Monitoring WAN Frame Relay Segments

This Option...	Performs This Function
Toggle dlci_mode	Enables the selected WAN interface to read Frame Relay protocol headers and determines the DLCI number of each packet that passes through the interface. DLCI mode lets you monitor traffic per DLCI number instead of per MAC address. DLCI mode is enabled (on) by default so you can view packets by DLCI numbers; however, there might be times when you want to view MAC addresses instead of DLCIs. For example, when monitoring a bridged Frame Relay segment, you might want to view the source and ultimate destination of each packet. To do so, turn the DLCI mode off, then use the TrafficDirector All Conversations application to view the source and destination MAC address of each packet instead of its DLCI number.
Toggle nrzi_dte	Interprets Non Return to Zero inverse signaling on the DTE interface. If your Frame Relay DTE circuit uses NRZI signaling, turn this option on; if the circuit uses Non Return to Zero signaling, turn this option off.
Toggle nrzi_dce	Interprets Non Return to Zero inverse signaling on the DCE interface. If your Frame Relay DCE circuit uses NRZI signaling, turn this option on; if the circuit uses Non Return to Zero signaling, turn this option off (the default).
Toggle crc_16	Performs 16-bit cyclical redundancy checks (CRCs) when on. When off, the device performs 32-bit CRCs. The default is on.
Toggle crc_disable	Disables CRC checking when on. The default is off.
Toggle pvc_discovery	When on, the device automatically discovers any DLCIs on attached WAN Frame Relay network segments using a management protocol. For each discovered DLCI, the device creates a virtual DLCI interface. For more information, see "Automatically Discovering Frame Relay DLCIs" in "Monitoring WAN DLCIs and ATM VPIs/VCIs." When off, the device only looks in NVRAM for any DLCIs that have been manually configured in the device. For each DLCI found in NVRAM, the device creates a virtual DLCI interface. For information on manually creating DLCIs, see "Manually Specifying Frame Relay DLCIs" in "Monitoring WAN DLCIs and ATM VPIs/VCIs."
Toggle rawhdr_capture	Lets you include DLCI information in any data capture of the interface packets.
Toggle mod_128_lapb	When the selected encapsulation type of the interface is X.25, the packets monitored by the device can have one of two headers: Mod_8 or Mod_128_lapb. This option lets you configure the interface to match the composition of the packets of the monitored link. When on, the interface interprets the header of each monitored X.25 encapsulation packet as a Mod_128_lapb header. When off (the default), the interface interprets the header of each packet as a Mod_8 header.

Note Set each of the options in Table 7-3 to reflect your current network configuration.
For example, if your network uses NRZI signalling, and Toggle nrzi_dte is off, the device cannot detect any packets on the segment.

Similarly, if your segment uses 16-bit CRCs, and Toggle crc_16 is off, CRCs are calculated incorrectly and the device counts all packets as having CRC errors.

Setting Interface Options for Monitoring WAN Frame Relay

To set interface options to monitor Frame Relay on a WAN network segment, follow these steps:

Step 1 From the Agent Configuration Utility, enter 8 and press Enter.

Step 2 Select the number corresponding to the WAN interface you want to configure and press Enter.

Step 3 Enter 14 and press Enter.

Step 4 Select the number corresponding to the option you want to toggle (on or off) and press Enter.

The Interface Options Menu is displayed again with any new values in the appropriate fields. However, changes do not take effect until you exit the Interface Options Menu.

Step 5 Enter 12 and press Enter.

Step 6 Reset the SwitchProbe agent. To do so, see "Resetting a SwitchProbe Agent."

Configuring Special Interface Options—Channelized T1/E1 WAN

The specialized agent configuration tasks described in the following sections apply only to WAN interfaces on Channelized T1/E1 WAN SwitchProbe devices.

Configuring a Channelized T1/E1 WAN SwitchProbe Device

To configure a Channelized T1/E1 WAN SwitchProbe device, follow these steps:

Step 1 From the Agent Configuration Utility menu, enter 8 and press Enter.

Step 2 Enter the menu selection of the WAN interface you want to configure.

The Agent Configuration Utility menu that is displayed when you select a Channelized WAN interface contains some unique options.

Step 3 On the first page of the Agent Configuration Utility menu, enter 31 and press Enter.

The second page of the Agent Configuration Utility menu is displayed.

Step 4 Enter 24 and press Enter.

The WAN Link menu is displayed. The menu selections and default values provided on this menu differ slightly according to the type of WAN link you are configuring (T1 or E1).

Note You can use command-line objects to set values in these special parameters.

Figure 7-1 shows the Channelized T1 WAN Link menu.

Figure 7-1: Channelized T1 WAN Link Menu


WAN link menu: 
 
Interface: 3, Type T1
 
[1] Enter Channel Info	.
[2] Display Channel Info.
[3] Clear All Channel Info.
[4] Change DS0 rate    :						        [64k]
[5] Change t1_code     :						        [b8zs]
[6] Change t1_framing  :						        [esf]
[7] Change data_invert :						        [off]
 
[9] Return to MAIN menu
 
Selection#:

Figure 7-2 shows the Channelized E1 WAN Link menu.

Figure 7-2: Channelized E1 WAN Link Menu


WAN link menu: 
 
Interface: 3, Type E1
 
[1] Enter Channel Info	.
[2] Display Channel Info.
[3] Clear All Channel Info.
[4] Change DS0 rate    :						        [64k]
[5] Change e1_code     :						        [hdb3]
[6] Change e1_framing  :						        [crc_4]
[7] Change e1_mode     :						        [ccs]
[8] Change data_invert :						        [off]
 
[9] Return to MAIN menu

Selection#:

A channelized T1 link has up to 24 DS0 units (also known as time slots); a channelized E1 link has up to 31 DS0 units. Each DS0 can have a bandwidth of 48K, 56K, or 64K.

A channel contains one or more time slots, and each time slot within a channel has the same properties, such as encapsulation protocol and speed.

The following sections contain additional configuration instructions:

Defining Channels

To set up user-defined channels, enter 1 and press Enter.

The Channel Interface Creation menu is displayed (Figure 7-3).

Note The channel map creation and the line characteristics you select must match the DSU/CSU selections; otherwise, the device cannot see accurate data.

Figure 7-3: Channel Interface Creation Menu


Selection#: 1
 
Enter '+/-' for next/previous channel
 
[1] Channel      :						 1
[2] Encapsulation: FRAME_RELAY						
[3] PVC discovery:		 [on]				
[4] Raw Capture  : [on]
[5] Mod_128_lapb :						 [off]
[6] Data Offset  :						 [0]
[7] Slot Map     :						 Slot 1 -> [1----------------------] <- Slot 24]
[8] Previous menu
 
Selection :

The following sections contain additional configuration instructions:

Selecting Channel

The Channel menu option defaults to channel 1.

To select another channel, follow these steps:

Step 1 Enter 1 and press Enter.

Step 2 At the Select Channel prompt, enter the channel number (a value between 1 and 24), and press Enter.

The selected channel number is displayed next to the Channel option in the Channel Interface Creation menu.

Note Information related to the selected channel (encapsulation, PVC discovery, and so on) is also displayed next to each menu option.

Tip

Alternate Channel Selection Method—You can select the previous or next channel by entering + or - respectively and pressing Enter.

For example, if channel 1 is the current selected channel and you want to select channel 2, enter + and press Enter. Or, if channel 18 is the selected channel and you want to select channel 17, enter - and press Enter.

Selecting Encapsulation Protocol

The Encapsulation menu option defaults to Line Data.

To select a different encapsulation protocol for the selected channel, follow these steps:

Step 1 Enter 2 and press Enter.

A menu of encapsulation protocols is displayed.

Step 2 Enter the number associated with the encapsulation protocol that you want to assign to the selected channel and press Enter.

The selected encapsulation protocol is displayed next to the Encapsulation option of the selected channel.

Selecting PVC Discovery (for Frame Relay Encapsulation Only)

Channelized WAN SwitchProbe devices support the monitoring of permanent virtual circuits (PVCs) over WAN interface channels. You can configure these devices to create/discover a virtual interface for each data-link connection identifier (DLCI) on the WAN Frame Relay channels (up to 256 virtual interfaces per device).

After a DLCI virtual interface is created/discovered, it is considered a physical interface, so you can monitor each DLCI as you would an entire SwitchProbe agent. You can use several TrafficDirector applications to view detailed statistics about any DLCI on a WAN channel. By default, PVC discovery is off.

To change the value, enter 3 and press Enter. The value toggles to the opposite value (for example, off to on).

If the selected channel uses a Frame Relay management protocol such as LMI or Annex D, PVC discovery and DLCI interface creation is fully automated. For each DLCI the device sees on the selected WAN channel, it automatically creates a virtual interface that you can monitor as you would any other agent. For more information, see "Manually Specifying Frame Relay DLCIs" in "Monitoring WAN DLCIs and ATM VPIs/VCIs."
If the selected channel does not use a Frame Relay management protocol such as LMI or Annex D, you must manually specify which DLCIs you want to monitor. For more information, see "Manually Specifying Frame Relay DLCIs" in "Monitoring WAN DLCIs and ATM VPIs/VCIs."

Selecting Raw Capture (for Frame Relay Encapsulation Only)

When you select Frame Relay as the encapsulation type, Frame Relay header information is included in any data capture of the channel packets. The default is off.

To change the value, enter 4 and press Enter. The value toggles to the opposite value
(for example, off to on).

Selecting Mod_128_lapb (for X.25 Encapsulation Only)

When the selected encapsulation type is X.25, the packets monitored by the device can have either Mod_8 or Mod_128_lapb headers.

Use this option to configure the device to match the composition of the monitored link packets. The default is off (the header of monitored packets is not interpreted as a Mod_128_lapb header).

To change the value, enter 5 and press Enter. The value toggles to the opposite value (for example, off to on).

Selecting Data Offset

Some packets contain a two-byte header and others contain a zero-byte header. Use the Data Offset option to configure the device to ignore a specific number of bytes at the beginning of each data packet. The default is 0 (no bytes are ignored).

To change the value, follow these steps:

Step 1 Enter 6 and press Enter.

Step 2 Enter the number of bytes (1 through 15) that you want the device to ignore and press Enter.

Selecting Slot Map

This option lets you select the DS0 units (time slots) of the selected channel.

You are prompted to enter the particular time slots. Enter time slot information in one of the following formats:

A single time slot (for example, 7)
Several time slots, each separated by a space (for example, 11 18 4)
A range of time slots, with low and high boundaries separated by a hyphen (for example, 3-15)
A combination of the preceding forms (for example, 3 15 11-13 18-22)

Note The selected WAN interface has a finite number of time slots (T1 has 24; E1 has 31). After you select a time slot as a component of a channel, you cannot select that time slot as a component of any other channel (unless you disassociate the time slot from its original channel).

To return to the (T1/E1) WAN Link menu, enter 8 and press Enter.

Displaying Channels

To view user-defined channels in the selected WAN interface, enter 2 from the (T1/E1) WAN Link menu and press Enter.

A list of all user-defined channels in the selected WAN interface, with a summary of the characteristics of each channel, is displayed (Figures 7-4 and 7-5).

Figure 7-4: Channelized T1 WAN Channel Map

Selection#: 2
 
Channel map: interface 3, Type T1
 
Channel ifIndex  slotmap                              protocol
-----------------|---|----|----|----|----|----|---------------------
1       2048    [1111--------------------]            CISCO_HDLC
2       2049    [----1111----------------]            FRAME_RELAY
3       2050    [--------11--------------]            CISCO_HDLC
4       2051    [----------11------------]            FRAME_RELAY
5       2052    [------------11----------]            CISCO_HDLC
6       2053    [--------------1---------]            FRAME_RELAY
7       2054    [---------------1--------]            CISCO_HDLC
 
Press <Enter> key to proceed ..

Figure 7-5: Channelized E1 WAN Channel Map

Channel map: interface 3, Type E1
 
Channel ifIndex  slotmap                          protocol
-----------------|---|----|----|----|----|----|-----------------
1       2048    [11-----------------------------] FRAME_RELAY
2       2049    [--11---------------------------] FRAME_RELAY
3       2050    [----11-------------------------] FRAME_RELAY
4       2051    [------11-----------------------] FRAME_RELAY
5       2052    [--------11---------------------] FRAME_RELAY
6       2053    [----------11-------------------] FRAME_RELAY
7       2054    [------------11-----------------] FRAME_RELAY
8       2055    [--------------11---------------] FRAME_RELAY
9       2056    [----------------11-------------] FRAME_RELAY
10      2057    [------------------11-----------] FRAME_RELAY
11      2058    [--------------------11---------] FRAME_RELAY
12      2059    [----------------------11-------] FRAME_RELAY
13      2060    [------------------------11-----] FRAME_RELAY
14      2061    [--------------------------11---] FRAME_RELAY
15      2062    [----------------------------11-] FRAME_RELAY
16      2063    [------------------------------1] FRAME_RELAY
 
Press <Enter> key to proceed ..

Note The agent internally assigns an interface index number (ifIndex) for each user-defined channel in the selected WAN interface. To view statistics about a specific channel, you must create an agent and direct that agent to monitor the corresponding ifIndex of the channel.

Clearing All Channels

To clear (delete) all channels associated with the selected interface, follow these steps:

Step 1 Enter 3 and press Enter.

A message is displayed to alert you that all channel maps (for the selected interface) will be deleted.

Step 2 Confirm the deletion by entering Y and pressing Enter at the confirmation prompt.

Changing Line Characteristics of Listed Channels

Use menu options 4, 5, 6 and 7 to set the line characteristics of the listed channels. For example, if you change the DS0 rate, all listed channels inherit that DS0 rate.

Table 7-4 lists the fields displayed when the WAN link is a channelized T1 line.

Table 7-4: Channelized T1 Line Characteristic Fields

Field	Description and Action
Change DS0 rate	Each DS0 can have a bandwidth rate of 48K, 56K, or 64K (default). To change the DS0 bandwidth value, enter 4 and press Enter. Three choices are displayed. Enter the desired bandwidth rate. The rate is case-sensitive.
Change t1_code	The device is set to a default code standard of Binary 8, Zero Sequencing (B8ZS). To toggle the code to Alternate Mark Inversion (AMI), enter 5 and press Enter.
Change t1_framing	The device is set to a default framing value of Extended Super Frame (ESF). To toggle the framing standard to Super Frame (SF also known as D4), enter 6 and press Enter. The value changes to sf(d4).
Change_data_invert	Data inversion is primarily used with AMI in most older CSUs for better noise tolerance. The default is off. To toggle this feature (on/off), enter 7 and press Enter.

Table 7-5 lists the fields displayed when the WAN link is a channelized E1 line.

Table 7-5: Channelized E1 Line Characteristic Fields

Field	Description and Action
Change DS0 rate	Each DS0 can have a bandwidth rate of 48K, 56K, or 64K (default). To change the DS0 bandwidth value, enter 4 and press Enter. Three choices are displayed. Enter the desired bandwidth rate. The rate is case-sensitive.
Change e1_code	The device is set to a default code standard of high-density, bipolar 3-zero (HDB3). To toggle the code to Alternate Mark Inversion (AMI), enter 5 and press Enter.
Change e1_framing	The device is set to a default framing value of cyclic redundancy check (CRC_4). To toggle the framing standard to no cyclic redundancy check (NO_CRC_4), enter 6 and press Enter.
Change_e1_mode	The E1 WAN device can have one of two modes: CCS (Common Channel Signaling; the default)—Used in a network with no voice traffic (slot 0 is used for framing data). CAS (Channel Associated Signaling)—Used in a network with voice `and` data traffic (slot 0 is used for framing data; slot 16 is used for framing voice). To toggle the e1_mode value (CCS/CAS), enter 7 and press Enter.
Change_data_invert	Data inversion is primarily used with AMI in most older CSUs for better noise tolerance. The default is off. To toggle this feature (on/off), enter 8 and press Enter.

To return to the main menu of the Agent Configuration Utility, enter 9 and press Enter.

Using Network Structure Worksheets (Channelized T1/E1 WAN Links)

The instructions and worksheets in this section are provided so you can record the structure of the WAN network to be monitored by a Channelized T1/E1 WAN SwitchProbe device. Use the data on these worksheets as you enter information about the network using the Agent Configuration Utility menus.

Channelized T1 WAN Link Worksheet Instructions—Interface Settings

In Table 7-6, circle the appropriate setting for WAN Interface Number, DS0 rate, T1 line code, T1 framing, and date inversion.

Table 7-6: Channelized T1 WAN Link Worksheet—
Interface Settings (Circle Appropriate Setting)

WAN Interface Number	3	4
DS0 rate	48K	56K	64K (recommended)
T1 line code	B8ZS	AMI
T1 framing	ESF	SF(d4)
Data inversion	Off	On

Channelized T1 WAN Link Worksheet Instructions—Channel Mapping

The WAN network can contain many time slots in many channels. The worksheet in Figure 7-6 is provided to help you map the channels/time slots of the network to be monitored. When complete, you can use this chart to assist you in entering the
channel/ time slot information required by the device.

To complete the worksheet, follow these steps:

Step 1 Place an X in the appropriate time slot of the channel(s) on the network to be monitored.

For example, if the network is configured to use time slots 6, 8, and 21 of channel 4, place an X to the right of channel 4 in the 6, 8 and 21 time slots.

Step 2 When you place an X in a time slot:

Circle the time slot number (at the top of the worksheet).
Draw a line from the time slot number to the bottom of the worksheet (so you do not use the same time slot twice).
Circle the channel number (along the left side of the worksheet).
Draw a line from the channel number to the last cell (Encaps Protocol) in the chart.
In the Encaps Protocol field, enter the name of the channel encapsulation protocol type (for example Frame Relay, PPP, Cisco HDLC, and so on).

Figure 7-6: Channelized T1—Channel Mapping

TIME SLOTS
		1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18	19	20	21	22	23	24	Encaps Protocol
	1
	2
	3
	4
	5
C	6
H	7
A	8
N	9
N	10
E	11
L	12
	13
N	14
U	15
M	16
B	17
E	18
R	19
	20
	21
	22
	23
	24

Channelized E1 WAN Link Worksheet Instructions—Interface Settings

In Table 7-7, circle the appropriate setting for WAN Interface Number, DS0 rate, E1 line code, E1 framing, E1 mode, and data inversion.

Table 7-7: Channelized E1 WAN Link Worksheet—
Interface Settings (Circle Appropriate Setting)

WAN interface number	3	4
DS0 rate	48K	56K	64K (recommended)
E1 line code	HDB3	AMI
E1 framing	CRC-4	NO CRC-4
E1 mode	CCS	CAS
Data inversion	Off	On

Channelized E1 WAN Link Worksheet Instructions—Channel Mapping

The WAN network that you want to monitor might contain many time slots in many channels. The chart in Figure 7-7 is provided to help you map the channels/time slots of the network to be monitored. Use this chart to assist you in entering the channel/time slot information required by the device.

To complete the worksheet, follow these steps:

Step 1 Place an X in the appropriate time slot of the channel(s) on the network to be monitored.

For example, if the network is configured to use time slots 11, 3, and 8 of channel 3, place an X to the right of channel 4 in the 11, 3, and 8 time slots.

Step 2 When you place an X in a time slot:

Circle the time slot number (at the top of the worksheet).
Draw a line from the time slot number to the bottom of the worksheet (so you do not use the same time slot twice).
Circle the channel number (along the left side of the worksheet).
Draw a line from the channel number to the last cell (Encaps Protocol) in the chart.
In the Encaps Protocol field, enter the name of the channel encapsulation protocol type (for example Frame Relay, PPP, Cisco HDLC, and so on).

Figure 7-7: Channelized E1—Channel Mapping

TIME SLOTS
		1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18	19	20	21	22	23	24	25	26	27	28	29	30	31	Encaps Protocol
	1
	2
	3
	4
	5
	6
	7
	8
	9
C	10
H	11
A	12
N	13
N	14
E	15
L	16
	17
N	18
U	19
M	20
B	21
E	22
R	23
	24
	25
	26
	27
	28
	29
	30
	31

Channelized T1 WAN SwitchProbe Command-Line Objects

Table 7-8 describes the options you can set for a Channelized T1 WAN interface using option 24 (Configure WAN Link) of the Agent Configuration Utility.

Table 7-8: Setting Channelized T1 WAN Interface Options

This Option...	Performs This Function
lnkopt	Lets you view (get lnkopt) or establish (set lnkopt) the following options for the WAN interface.
	t1_code—Set to a default code standard of Binary 8 Zero Sequencing (B8ZS), you can set this option to Alternate Mark Inversion (AMI). To view the value, enter get linkopt t1_code. To set the value to AMI, enter set lnkopt t1_code ami. To set the value to B8ZS, enter set lnkopt t1_code b8zs.
	t1_framing—Set to a default framing value of Extended Super Frame (ESF), you can set this option to Super Frame (SF, also known as D4). To view the value, enter get lnkopt t1_framing. To set the value to SF, enter set lnkopt t1_framing sf. To set the value to ESF, enter set lnkopt t1_framing esf.
	data_invert—Data inversion is used primarily with AMI in most older CSUs for better noise tolerance. The default is off. To view the value, enter get lnkopt data_invert. To set the value to on, enter set lnkopt data_invert on. To set the value to off, enter set lnkopt data_invert off. ds0_rate—Allows you to view (get lnkopt DS0_rate) or establish (set lnkopt DS0_rate) the bandwidth of each DS0 monitored by the selected WAN interface. To view the value, enter get lnkopt ds0_rate. To set the value to 56k, enter set lnkopt ds0_rate 56k. To set the value to 48k, enter set lnkopt ds0_rate 48k.

Channelized E1 WAN SwitchProbe Command-Line Objects

Table 7-9 describes the options you can set for a channelized E1 WAN interface using option 24 (Configure WAN Link) of the Agent Configuration Utility.

Table 7-9: Channelized E1 WAN Interface Options

This Option...	Performs This Function
lnkopt	Lets you view (get lnkopt) or establish (set lnkopt) the following options for the WAN interface:
	e1_code—Set to a default code standard of High-Density Bipolar 3-Zero (HDB3), you can set this option to Alternate Mark Inversion (AMI). To view the value, enter get linkopt e1_code. To set the value to AMI, enter set lnkopt e1_code ami. To set the value to HDB8, enter set lnkopt e1_code hdb3.
	e1_framing—Set to a default framing value of cyclic redundancy check (CRC_4), you can set this option to no cyclic redundancy check (NO_CRC_4). To view the value, enter get lnkopt e1_framing. To set the value to no_crc_4, enter set lnkopt e1_framing no_crc_4. To set the value to crc_4, enter set lnkopt e1_framing crc_4.
	e1_mode—Set to a default code standard of Common Channel Signaling (CCS), you can set this option to Channel Associated Signaling (CAS). To view the value, enter get lnkopt e1_mode. To set the value to CAS, enter set lnkopt e1_mode CAS. To set the value to CCS, enter set lnkopt e1_mode CCS.
lnkopt (continued)	data_invert—Data inversion is used primarily with AMI in most older CSUs for better noise tolerance. The default is off. To view the value, enter get lnkopt data_invert. To set the value to on, enter set lnkopt data_invert on. To set the value to off, enter set lnkopt data_invert off. ds0_rate—Lets you view (get lnkopt ds0_rate) or establish (set lnkopt ds0_rate`)` the bandwidth of each DS0 monitored by the selected WAN interface. Note Cisco systems strongly recommends that you use the default rate of 64K. To view the value, enter get lnkopt ds0_rate. To set the value to 56k, enter set lnkopt ds0_rate 56k. To set the value to 48k, enter set lnkopt ds0_rate 48k.

Configuring Special Interface Options—Multiport T1/D or
E1/D WAN

This section describes specialized agent configuration tasks that apply to the WAN interfaces of the Multiport T1/D or E1/D WAN SwitchProbe devices.

To configure the WAN interfaces, follow these steps:

Step 1 From the Agent Configuration Utility main menu, enter 8 and press Enter.

Step 2 Enter the menu selection of the desired WAN interface you want to configure.

The Agent Configuration Utility menu is displayed.

Step 3 Enter 31 and press Enter.

The second page of the Agent Configuration Utility menu is displayed.

Step 4 Enter 24 and press Enter.

The WAN Link menu is displayed.

The menu selections and default values differ slightly for the Multiport T1/D and E1/D WAN SwitchProbe devices. The following sections describe the configuration tasks for each of these devices:

Configuring a Multiport T1/D WAN SwitchProbe Device

When you select option 24 in the Multiport T1/D WAN SwitchProbe device, the T1/D WAN Link menu (Figure 7-8) is displayed.

Figure 7-8: Multiport T1/D WAN Link Menu


WAN Link Menu
 
Interface: 3, Type T1
 
[1] Slot map              : slot 1-> [--------------------]
[4] Change DS0 rate       : [64k]
[5] Change t1_code        : [b8zs]
[6] Change t1_framing     : [esf]
[7] Change data_invert    : [off]
 
[9] Return to MAIN menu
 
Selection#:

The Multiport T1/D WAN SwitchProbe device contains only one channel. This channel can contain a maximum of 24 DS0 units (also known as time slots). Each DS0 can have a bandwidth of48K, 56K, or 64K (default).

Use menu options 4, 5, 6 and 7 to set the line characteristics of the listed channels. For example, if you change the DS0 rate, all listed channels inherit that DS0 rate.

Table 7-10 lists the fields displayed when the WAN link is a multiport T1 line.

Table 7-10: Multiport T1 Line Characteristic Fields

Field	Description and Action
Select slot map	Lets you select the DS0 units (time slots) of the selected T1 channel. After you select this option, you are prompted to enter the particular time slots. Enter time slot information in one of the following formats: A single time slot (for example, 7) Several time slots, each separated by a space (for example, 11 18 4) A range of time slots, with low to high boundaries separated by a hyphen (for example, 3-15) A combination of the preceding forms (for example, 3 15 11-13 18-22)
Change DS0 rate	Each DS0 can have a bandwidth rate of 48K, 56K, or 64K (default). To change the DS0 bandwidth value, enter 4 and press Enter. Three choices are displayed. Enter the desired bandwidth rate. The rate is case sensitive,
Change t1_code	The device is set to a default code standard of Binary 8, Zero Sequencing (B8ZS). To toggle the code to Alternate Mark Inversion (AMI), enter 5 and press Enter.
Change t1_framing	The device is set to a default framing value of Extended Super Frame (ESF). To toggle the framing standard to Super Frame (SF, also known as D4), enter 6 and press Enter. The value changes to SF(D4).
Change_data_invert	Data inversion is primarily used with AMI in most older CSUs for better noise tolerance. The default is off. To toggle this feature (on/off), enter 7 and press Enter.

To return to the main menu of the Agent Configuration Utility, enter 9 and press Enter.

Configuring a Multiport E1/D WAN SwitchProbe Device

When you select option 24 in the Multiport E1/D WAN SwitchProbe device, the WAN Link menu (Figure 7-9) is displayed.

Figure 7-9: Multiport E1/D WAN Link Menu


WAN Link Menu
 
Interface: 3, Type E1
 
[1] Slot map              : slot 1-> [--------------------]
[4] Change DS0 rate       : [64k]
[5] Change e1_code        : [hdb3]
[6] Change e1_framing     : [crc_4]
[7] Change e1_mode			        : [ccs]
[8] Change data_invert    : [off]
 
[9] Return to MAIN menu
 
Selection#:

The Multiport E1/D WAN SwitchProbe device contains only one channel. This channel can contain a maximum of 31 DS0 units (also known as time slots) of 64K each.

You use menu options 4, 5, 6 and 7 to set the line characteristics of the listed channels. For example, if you change the DS0 rate, all listed channels inherit that DS0 rate.

Table 7-11 lists the fields displayed when the WAN link is an E1 line.

Note You use menu options 4, 5, 6 and 7 to set the line characteristics of the listed channels.

Table 7-11: Multiport E1 Line Characteristic Fields

Field	Description and Action
Select slot map	Lets you select the DS0 units (time slots) of the selected E1 channel. After you select this option, you are prompted to enter the particular time slots. Enter time slot information in one of the following formats: A single time slot (for example, 7) Several time slots, each separated by a space (for example, 11 18 4) A range of time slots, with low to high boundaries separated by a hyphen (for example, 3-15) A combination of the preceding forms (for example, 3 15 11-13 18-22)
Change DS0 rate	Each DS0 can have a bandwidth rate of 48K, 56K, or 64K (default). To change the DS0 bandwidth value, enter 4 and press Enter. Three choices are displayed. Enter the desired bandwidth rate. The rate is case-sensitive.
Change e1_code	The device is set to a default code standard of high-density, bipolar 3-zero (HDB3). To toggle the code to Alternate Mark Inversion (AMI), enter 5 and press Enter.
Change e1_framing	The device is set to a default framing value of cyclic redundancy check (CRC_4). To toggle the framing standard to no cyclic redundancy check (NO_CRC_4), enter 6 and press Enter.
Change_e1_mode	The device can have one of two modes: CCS (Common Channel Signaling, the default)—Used in a network with no voice traffic (slot 0 is used for framing data). CAS (Channel Associated Signaling)—Used in a network with voice and data traffic (slot 0 is used for framing data; slot 16 is used for framing voice). To toggle the e1_mode value (CCS/CAS), enter 7 and press Enter.
Change_data_invert	Data inversion is primarily used with AMI in most older CSUs for better noise tolerance. The default is off. To toggle this feature (on/off), enter 8 and press Enter.

To return to the main menu of the Agent Configuration Utility, enter 9 and press Enter.

Using Network Structure Worksheets (T1/D or E1/D WAN Links)

The worksheets and instructions in this section are provided so you can record the structure of the WAN network to be monitored by a Multiport T1/D or E1/D WAN SwitchProbe device. Use the data on these worksheets as you enter information about the network using the Agent Configuration Utility menus.

Multiport T1/D WAN Link Worksheet Instructions—Interface Settings

In Table 7-12, circle the appropriate setting for WAN Interface Number, DS0 rate, T1 line code, T1 framing, and date inversion.

Table 7-12: Multiport T1/D WAN Link Worksheet—
Interface Settings (Circle Appropriate Setting)

WAN interface number	3	4
DS0 rate	48K	56K	64K
T1 line code	B8ZS	AMI
T1 framing	ESF	SF(d4)
Data inversion	Off	On

Multiport T1/D WAN Link Worksheet Instructions—Channel Mapping

The WAN network can consist of many time slots in many channels. The worksheet in Figure 7-10 is provided to help you map the channels/time slots of the network to be monitored. When complete, you can use this chart to assist you in entering the channel/time slot information required by the device.

To complete the worksheet, follow these steps:

Step 1 Place an X in the appropriate time slot of the channel(s) on the network to be monitored.

For example, if the network is configured to use time slots 6, 8, and 21 of channel 4, place an X to the right of channel 4 in the 6, 8 and 21 time slots.

Step 2 When you place an X in a time slot:

Circle the time slot number (at the top of the worksheet).
Draw a line from the time slot number to the bottom of the worksheet (so you do not use the same time slot twice).
Circle the channel number (along the left side of the worksheet).
Draw a line from the channel number to the last cell (Encaps Protocol) in the chart.

In the Encaps Protocol field, enter the name of the channel encapsulation protocol type (for example Frame Relay, PPP, Cisco HDLC, and so on).
Figure 7-10: Multiport T1/D WAN—Channel Mapping

TIME SLOTS
		1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18	19	20	21	22	23	24	Encaps Protocol
	1
	2
	3
	4
	5
C	6
H	7
A	8
N	9
N	10
E	11
L	12
	13
N	14
U	15
M	16
B	17
E	18
R	19
	20
	21
	22
	23
	24

Multiport E1/D WAN Link Worksheet Instructions—Interface Settings

In Table 7-13, circle the appropriate setting for WAN Interface Number, DS0 rate, E1 line code, E1 framing, E1 mode, and data inversion.

Table 7-13: Multiport E1/D WAN Link Worksheet—Interface Settings
(Circle Appropriate Setting)

WAN Interface Number	3	4
DS0 rate	64K (recommended)
E1 line code	HDB3	AMI
E1 framing	CRC-4	NO CRC-4
E1 mode	CCS	CAS
Data inversion	Off	On

Multiport E1/D WAN Link Worksheet Instructions—Channel Mapping

The WAN network that you want to monitor might consist of many time slots in many channels. The chart in Figure 7-11 is provided to help you map the channels/time slots of the network to be monitored. Use this chart to assist you in entering the channel/time slot information required by the device.

To complete the worksheet, follow these steps:

Step 1 Place an X in the appropriate time slot of the channel(s) on the network to be monitored.

For example, if the network is configured to use time slots 11, 3, and 8 of channel 3, place an X to the right of channel 4 in the 11, 3, and 8 time slots.

Step 2 When you place an X in a time slot:

Circle the time slot number (at the top of the worksheet).
Draw a line from the time slot number to the bottom of the worksheet (so you do not use the same time slot twice).
Circle the channel number (along the left side of the worksheet).
Draw a line from the channel number to the last cell (Encaps Protocol) in the chart.
In the Encaps Protocol field, enter the name of the channel encapsulation protocol type (for example Frame Relay, PPP, Cisco HDLC, and so on).

Figure 7-11: Multiport E1/D WAN—Channel Mapping

TIME SLOTS
		1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18	19	20	21	22	23	24	25	26	27	28	29	30	31	Encaps Protocol
	1
	2
	3
	4
	5
	6
	7
	8
	9
C	10
H	11
A	12
N	13
N	14
E	15
L	16
	17
N	18
U	19
M	20
B	21
E	22
R	23
	24
	25
	26
	27
	28
	29
	30
	31

Multiport T1/D WAN SwitchProbe Command-Line Configuration

Table 7-14 lists the options you can set for a WAN interface using option 24 (Configure WAN Link) of the Agent Configuration Utility.

Table 7-14: Multiport T1/D WAN Interface Options

This Option...	Performs This Function
lnkopt	Allows you to view (get lnkopt) or establish (set lnkopt) the following options for the WAN interface.
	t1_code—Set to a default code standard of Binary 8 Zero Sequencing (B8ZS), you can set this option to Alternate Mark Inversion (AMI). To view the value, enter get linkopt t1_code. To set the value to AMI, enter set lnkopt t1_code ami. To set the value to B8ZS, enter set lnkopt t1_code b8zs.
	t1_framing—Set to a default framing value of Extended Super Frame (ESF), you can set this option to Super Frame (SF, also known as D4). To view the value, enter get lnkopt t1_framing. To set the value to SF, enter set lnkopt t1_framing sf. To set the value to ESF, enter set lnkopt t1_framing esf.
	data_invert—Data inversion is used primarily with AMI in most older CSUs for better noise tolerance. The default is off. To view the value, enter get lnkopt data_invert. To set the value to on, enter set lnkopt data_invert on. To set the value to off, enter set lnkopt data_invert off. ds0_rate—Lets you view get lnkopt DS0_rate) or establish (set lnkopt DS0_rate) the bandwidth of each DS0 monitored by the selected WAN interface. To view the value, enter get lnkopt ds0_rate. To set the value to 56k, enter set lnkopt ds0_rate 56k. To set the value to 48k, enter set lnkopt ds0_rate 48k.

Multiport E1/D WAN SwitchProbe Command-Line Configuration

Table 7-15 lists the options you can set for a WAN interface using option 24 (Configure WAN Link) of the Agent Configuration Utility.

Table 7-15: Multiport E1/D WAN Interface Options

This Option...	Performs This Function
lnkopt	Allows you to view (get lnkopt) or establish (set lnkopt) the following options for the WAN interface.
	e1_code—Set to a default code standard of High-Density Bipolar 3-Zero (HDB3), you can set this option to Alternate Mark Inversion (AMI). To view the value, enter get linkopt e1_code. To set the value to AMI, enter set lnkopt e1_code ami. To set the value to HDB8, enter set lnkopt e1_code hdb3.
	e1_framing—Set to a default framing value of cyclic redundancy check (CRC_4), you can set this option to no cyclic redundancy check (NO_CRC_4). To view the value, enter get lnkopt e1_framing. To set the value to no_crc_4, enter set lnkopt e1_framing no_crc_4. To set the value to crc_4, enter set lnkopt e1_framing crc_4.
	e1_mode—Set to a default code standard of Common Channel Signaling (CCS), you can set this option to Channel Associated Signaling (CAS). To view the value, enter lnkopt e1_mode. To set the value to CAS, enter set lnkopt e1_mode CAS. To set the value to CCS, enter set lnkopt e1_mode CCS.
lnkopt (continued)	data_invert—Data inversion is used primarily with AMI in most older CSUs for better noise tolerance. The default is off. To view the value, enter get lnkopt data_invert. To set the value to on, enter set lnkopt data_invert on. To set the value to off, enter set lnkopt data_invert off. ds0_rate—Allows you to view (get lnkopt DS0_rate) or establish (set lnkopt DS0_rate`)` the bandwidth of each DS0 monitored by the selected WAN interface. Note Cisco systems strongly recommends that you use the default rate of 64K. To view the value, enter get lnkopt ds0_rate. To set the value to 56K, enter set lnkopt ds0_rate 56k. To set the value to 48K, enter set lnkopt ds0_rate 48k.

Configuring Special Interface Options—Fast Ethernet

The Configure Interface Options menu contains a special option when you select a single or multiport Fast Ethernet interface—Toggle rawhdr_capture—that lets you include the VLAN ID information in any data capture of the interface packets.

Setting Interface Options (Fast Ethernet Interface)

To set interface options for a Fast Ethernet interface, follow these steps:

Step 1 From the Agent Configuration Utility, enter 8 and press Enter.

Step 2 Select the number corresponding to the Fast Ethernet interface you want to configure and press Enter.

Step 3 Enter 14 and press Enter.

Step 4 Select the number corresponding to the option you want to toggle (on or off) and press Enter.

The Interface Options Menu is displayed again with any new values in the appropriate fields. However, changes do not take effect until you exit the Interface Options Menu.

Step 5 Enter 12 and press Enter.

Step 6 Reset the SwitchProbe agent. To do so, see "Resetting a SwitchProbe Agent."

discard_dribbles Option (Fast Ethernet Interface)

On Fast Ethernet SwitchProbe devices, you can include or exclude dribble errors as part of the CRC/align error count. The following applies:

When you enable the discard_dribbles option, the agent does not include dribble errors as part of the CRC/align error count.
When you disable the discard_dribbles option (the default), the agent includes dribble errors as part of the CRC/align error count.

Setting discard_dribbles Option (Fast Ethernet Interface)

To change the discard_dribbles option, follow these steps:

Step 1 Access the Agent Configuration Utility.

Step 2 Enter 8 and select the Fast Ethernet interface.

Step 3 Enter 11 and press Enter.

Step 4 Use the command get if_options discard_dribbles to check the current status of the discard_dribbles option.

Step 5 Enable or disable the option as follows:

To enable the discard_dribbles option, use the command
set if_options discard_dribbles on.
To disable the discard_dribbles option, use the command
set if_options discard_dribbles off.

Selecting a Probe Mode

When you select Select Probe Mode from the Agent Configuration Utility main menu (selection 23), two options (half- and full-duplex) are displayed in another menu. You
use these options to set the mode on a Multiport Fast Ethernet NIC. The default is full-duplex (1).

To select the mode, follow these steps:

Step 1 From the Select Probe Mode menu, enter the option number (0 for half-duplex or 1 for full-duplex) and press Enter.

The Agent Configuration Utility main menu is displayed.

Note

Step 2 Enter the number listed to the left of the Reset Agent menu option and
press Enter.

Configuring Special Interface Options—Gigabit Ethernet

This section describes specialized agent configuration tasks that apply to the Ethernet interfaces of the Gigabit Ethernet SwitchProbe devices.

Selecting the Probe Mode

When you select Select Probe Mode from the Agent Configuration Utility main menu (selection 23), two options (half-duplex and full-duplex) are displayed in another menu. You use these options to set the mode on the Gigabit Ethernet NIC. The default is full-duplex (1).

To select the mode, follow these steps:

Step 1 From the Select Probe Mode menu, enter the option number (0 for half-duplex or 1 for full-duplex) and press Enter.

The Agent Configuration Utility main menu is displayed.

Note

Step 2 Enter the number listed to the left of the Reset Agent menu option and press Enter.

Configuring Special Interface Options—FDDI

The screens, selections, and procedures for configuring FDDI SwitchProbe devices are the same as basic device configuration with the following exception:

The interfaces in this device are Ethernet, Serial, and FDDI:

Selection #: 8
 
[1] ETHERNET 	        MODE = MANAGE
[2] SERIAL 						          MODE = MANAGE
[3] FDDI				 					            MODE = MONITOR
 
New Interface [1]:

Configuring Special Interface Options—OC-3 ATM

The default value in the Select Interface field (option 8) of the Agent Configuration Utility menu is ATM:

Interface number : 1
 
[1] Change IP Address               192.168.143.158
[2] Change Net Mask                 255.255.255.0
[3] Change Default Gateway Address 							 192.168.143.1
[4] Change Read Community           public
[5] Change Write Community          public
 
[8] Select Interface                ETHERNET
[9] Change Server Address           192.168.143.16
[10] Upgrade Software
[11] Enter Command-line mode
[12] Reset Agent
 
[13] Go to Next Page
 
          Enter your response or Enter "exit" to logout
 
Selection#:

The interface options are Ethernet, Serial, and ATM [DTE+DCE]:

Selection #:  8
 
[1] ETHERNET                        MODE = MANAGE
[2] SERIAL                          MODE = MANAGE
[3] ATM [DTE+DCE]                   MODE = MONITOR
 
New Interface [1] :

The Configure Interface Options menu contains a special option when you select an ATM interface, Toggle rawhdr_capture, that lets you include the VPI/VCI information in any data capture of the interface packets.

To change the setting, follow these steps:

Step 1 From the Agent Configuration Utility, enter 8 and press Enter.

Step 2 Select the number corresponding to the ATM interface and press Enter.

Step 3 Enter 14 and press Enter.

Step 4 To change the setting to the opposite value (on to off, or off to on), enter 8 and press Enter.

The Interface Options Menu is displayed again with the new value in the Toggle rawhdr_capture field. However, changes do not take effect until you exit the Interface Options Menu.

Step 5 Enter 12 and press Enter.

Step 6 Reset the SwitchProbe agent. To do so, see "Resetting a SwitchProbe Agent."

Setting ATM MIB Parameters

When you select Change ATM MIB Parameters from the Agent Configuration Utility main menu, options are displayed in another menu that allow you to perform the following tasks:

Define the size of the SwitchProbe host and matrix tables.
Set the frequency at which host and matrix information ages.
Enable/disable statistic, host, or matrix collection.

Table 7-16 summarizes the ATM MIB options.

Table 7-16: ATM MIB Options

This Option...	Performs This Function
Change host_table_size	Indicates and lets you set the maximum number of ATM NSAP hosts that each selected ATM interface in the device can monitor.
Change matrix_table_size	Indicates and lets you set the maximum number of ATM NSAP conversations that each selected ATM interface in the device can monitor.
Change host_aging_frequency	Lets you establish or modify the frequency (in seconds) at which the selected ATM interface replaces older information in the host tables with newer information.
Change matrix_aging_frequency	Lets you establish or modify the frequency (in seconds) at which the selected ATM interface replaces old information in the conversation tables with new information.
Toggle enable_stats	Determines whether the device tracks ATM NSAP statistics for the selected ATM interface (value is yes or no).
Toggle enable_host	Determines whether the device tracks ATM NSAP host statistics for the selected ATM interface (value is yes or no).
Toggle enable_matrix	Determines whether the device tracks ATM NSAP conversation statistics for the selected ATM interface (value is yes or no).

To modify the value of an ATM MIB parameter, follow these steps:

Step 1 From the Change ATM MIB Parameters menu, enter an option number and press Enter.

Step 2 Enter the desired value and press Enter.

Step 3 Reset the SwitchProbe agent. To do so, see "Resetting a SwitchProbe Agent."

Configuring Special Interface Options—DS-3 ATM

This section describes specialized agent configuration tasks that apply to the ATM interfaces of the DS-3 ATM SwitchProbe device.

Configuring DS-3 ATM Devices with the Agent Configuration Utility

To configure a DS-3 ATM SwitchProbe device using the Agent Configuration Utility, follow these steps:

Step 1 From the Agent Configuration Utility main menu, enter 8 and press Enter.

Step 2 Enter 3 and press Enter to select the DS-3 ATM interface.

Step 3 From the first page of the menu, enter 31 and press Enter.

The second page of the Agent Configuration Utility menu is displayed.

Step 4 Enter 14 and press Enter to configure interface options.

The Interface Options menu for the DS-3 ATM interface (Figure 7-12) is displayed.

Note

Step 5 To return to the Agent Configuration Utility main menu, enter 19 and press Enter.

Figure 7-12: DS-3 ATM Interface Options Menu

Interface Options Menu.
 
Interface number : 3
 
[8]  Toggle rawhdr_capture           off
[11] Toggle ATM_framing              PLCP
[12] Toggle Cbit_mode                off
[13] Toggle Mbit_mode                on
[14] Toggle coset_mode               on
[15] Toggle scrambling_mode          off
[16] Toggle Manage mode              off
[17] Toggle Monitor mode             on
 
[19] Go Back to Main Menu
 
Selection#:

Note All changes take effect immediately without resetting the device

Table 7-17 describes the options in the Interface Options menu.

Table 7-17: DS-3 ATM Interface Options

This Option...	Performs This Function
Toggle rawhdr_capture	Lets you include ATM Adaptation Layer 5 (AAL 5) header information in any data capture of the interface packets. To change the setting to the opposite value (on to off, or off to on), enter 8 and press Enter.
Toggle ATM_framing	The DS-3 ATM interface is set to a default framing value of Physical Layer Convergence Protocol (PLCP). To toggle the framing standard to ATM-Direct DS-3, enter 11 and press Enter.
Toggle Cbit_mode	In a standard asynchronous format, C-bits control bit stuffing. However, instead of performing a redundant task (stuffing bits when multiplexing 28 DS1 signals into seven DS2 signals, and again when multiplexing those seven DS2 signals into one DS-3 signal), the C-bits are redefined in a process known as `Cbit-parity`. You can use these redefined C-bits to perform other tasks (for example, to determine the efficiency of a signal path). The default is off (C-bit parity is disabled). To change the value, enter 12 and press Enter. The value toggles to the opposite value (for example, off to on).
Toggle Mbit_mode	Each DS-3 signal contains three multiframing bits (M-bits). One M-bit is located in the first block of the fifth, sixth, and seventh subframe of the signal. These bits form a multiframe alignment pattern (that can be used to find the signal subframes). The interface Mbit_mode setting should match the Mbit mode setting of the segment being monitored by the device. The default is off (the interface does not look for an M-bit alignment pattern in the frames being monitored). To change the value, enter 13 and press Enter. The value toggles to the opposite value (for example, off to on).
Toggle coset_mode	You can add a coset polynomial to a received Header Check Sum (HCS) octet before that octet is compared with a calculated result required by the ATM Forum UNI specifications. The default is on (the interface adds the coset polynomial to the received HCS octet). To change the value, enter 14. The value toggles to the opposite value (for example, on to off).
Toggle scrambling_mode	Data that passes over a DS-3 ATM segment can be scrambled or descrambled. The scrambling_mode setting of the interface must match the scrambling mode setting of the segment being monitored by the device. The default is off (the interface does not receive scrambled data). If the value in the scrambling_mode field is on, the interface does receive unscrambled data. To change the value, enter 15 and press Enter. The value toggles to the opposite value (for example, off to on).
Toggle Manage mode	The DS-3 ATM interface is always in monitor mode, and this value is always off. Note You cannot change this setting.
Toggle Monitor mode	The DS-3 ATM interface is always in monitor mode, and this value is always on. Note You cannot change this setting.

Step 6 To return to the Agent Configuration Utility main menu, enter 8 and press Enter.

The Agent Configuration Utility main menu is displayed again. New values do not take effect until you reset the SwitchProbe agent. To do so, see "Resetting a SwitchProbe Agent."

Configuring DS-3 ATM Devices with Command-Line Objects

The following section explains the special command-line objects for configuring the DS-3 ATM interface options (if_options). You can also configure the DS-3 ATM interface using the Interface Options menu of the Agent Configuration Utility.

The syntax for viewing or changing these special commands is:

get if_options option name
set if_options option name {on | off}

Table 7-18 describes the command-line objects.

Table 7-18: DS-3 ATM Command-Line Objects

This Object...	Performs This Function
ATM_framing	When off (default), the DS-3 ATM interface is set to a framing value of Physical Layer Convergence Protocol (PLCP). To change the framing standard to ATM-Direct, set the value to on as in the following example: set if_options ATM_framing on
Cbit_mode	When off (default), C-bit parity is disabled. To enable C-bit parity, set the value to on as in the following example: set if_options Cbit_mode on
Mbit_mode	When off (default), the interface does not look for an M-bit alignment pattern in the frames being monitored. To enable M-bit mode, set the value to on as in the following example: set if_options Mbit_mode on
coset_mode	When on (default), the interface adds the coset polynomial to the received Header Check Sum (HCS) octet. To force the interface to not add the coset polynomial, set the value to off as in the following example: set if_options coset_mode off
scrambling_mode	When off (default), the interface received scrambled data. To allow the interface to receive scrambled data, set the value to on as in the following example: set if_options scrambling_mode on

Configuring Agent Options

When you select Configure Agent Options from the Agent Configuration Utility main menu, another menu of options and their current state (on or off) is displayed. These options let you control specific enhanced functionality of a SwitchProbe device.

To toggle the setting of an option, follow these steps:

Step 1 Enter the option number and press Enter.

Step 2 To return to the Agent Configuration Utility main menu, enter 9 and
press Enter.

Table 7-19 describes the agent options.

Table 7-19: Configuring Agent Options

This Option...	Performs This Function
Toggle router_discovery	Enables/disables the monitoring of ICMP traffic to determine its default router. When enabled (on), the device looks for advertisements that the routers send on the network. If the device does not hear any router advertisements for the duration specified in the last router advertisement message, the device sends a message to the console.
Toggle router_enable	Enables/disables routing of only one device between the SLIP interface and a LAN interface.
Toggle modem_log	Enables/disables the recording of all modem events to the local console and event log.
Toggle slip_ip	Enables/disables the sending of SNMP traps seen on the SLIP interface to the primary LAN interface, retaining the IP address of the device that generated the trap.
Toggle discover_wanspeed	Enables/disables the ability to send SNMP get requests to the specified router to obtain the WAN link speed.
Toggle real_iftype	Displayed when the selected interface is a Fast Ethernet interface. The TrafficDirector application uses the same interface type number (6) to identify an Ethernet interface and a Fast Ethernet interface. Note Because you might want the device to differentiate these two interface types, Cisco Systems provides this option. When set to Yes, all Fast Ethernet interfaces on the device are assigned a unique Fast Ethernet interface type code (either 63 for 100Base TX or 69 for 100Base FX).
Toggle art_on_ifn49	Note Available only on Fast Ethernet and Multiport Fast Ethernet SwitchProbe devices. Determines how ART statistics are monitored. When on, the device monitors ART statistics on special interface 49. When off (default), the device monitors ART statistics on each Fast Ethernet interface. To toggle this feature (on/off), enter 10 and press Enter
Toggle ncp_request	When on, allows the SwitchProbe Proprietary Configuration Protocol (NCP) to download configuration information into the agent automatically when the device boots.

Configuring the Default Domain

SwitchProbe devices automatically install the RMON1 and RMON2 protocol domains when booted. You cannot deinstall network-layer protocol domains that the device installs automatically. Instead, when you remove a network-layer protocol domain, host and conversation groups are disabled for the protocol domain; the domain remains installed on the agent with only the statistics group enabled.

Table 7-20 shows the list of protocol domains the device automatically installs upon reset.

Table 7-20: Default RMON2 Protocol Domains

AOL
ARP
AT_ATP
AT_DSP
AT_NBP
AT_RTMP
AT_RTREQ
AT_ZIP
ATALK
BGP_TCP
COMPUSRV
DECLAT
DECNET
DLSW_RD
DLSW_WR
DNS_TCP
DOOM
EGP
FTP-CTRL
FTP-DATA

GGP
HTTP
HTTPS
ICMP
IGMP
IGRP
IP
IP~
IPIP
IPIP4
IPV6
IPX1_UDP
NB_DGM_T
NB_NS_T
NB_SSN_T
NCP
NET~
NETB
NEWS_TCP
NEWS_UDP

NFS
NNTP
NOTESTCP
NOVRIP
NOVSAP
NTP
ORACLSQL
OSI
OSPF
REALAUD
RIP
RMON
SIPP_AH
SIPP_ESP
SMTP
SNA
SNA_TCP
SNMP
SNMPTRAP
SOCKET

SQLNET_N
SUNRPC
TCP
TCP~
TELNET
TFTP
UDP
UDP~
VINES
VINESIPC
VINESRTP
VINESPPP
XNS
XNS_PEP
XNS_RIP
XNS_SPP
XWINDOW

Configuring RMON1 and RMON2 Parameters

You can configure default RMON1 and RMON2 parameters set in the device when it boots. The configuration you specify applies to all SwitchProbe interfaces. For example, if you set max_host to a maximum of 10000, each interface can track statistics for 10000 hosts.

Table 7-21 shows the RMON1 parameters you can configure.

Table 7-21: Configurable RMON1 Parameters

Select This Parameter...	To Configure
[1] Change max_host	Maximum number of hosts for which each interface tracks MAC-layer statistics.
[2] Change max_matrix	Maximum number of conversations for which each interface tracks MAC-layer statistics.
[3] Change sh_buckets	Maximum number of buckets each interface uses to store short-term history statistics.
[4] Change lh_buckets	Maximum number of buckets each interface uses to store long-term history statistics.
[5] Change sh_interval	Interval at which the device gathers and stores short-term history statistics for each interface.
[6] Change lh_interval	Interval at which the device gathers and stores long-term history statistics for each interface.
[7] Change dlci_sh_buckets	Maximum number of buckets the device uses to store short-term history statistics for each DLCI.
[8] Change dlci_lh_buckets	Maximum number of buckets the device uses to store long-term history statistics for each DLCI.
[9] Change dlci_sh_interval	Interval at which the device gathers and stores short-term history statistics for each DLCI.
[10] Change dlci_lh_interval	Interval at which the device gathers and stores long-term history statistics for each DLCI.
[11] Toggle start_stats	Tracking of RMON1 statistics for each interface and all DLCIs during boot.
[12] Toggle start_history	Tracking of short- and long-term history statistics for each interface and all DLCIs during boot.

Table 7-22 shows the RMON2 parameters you can configure.

Table 7-22: Configurable RMON2 Parameters

Select This Parameter...	To Configure
[1] Change nl_hosts	Maximum number of hosts for which each interface tracks network-layer statistics.
[2] Change al_hosts	Maximum number of hosts for which each interface tracks application-layer statistics.
[3] Change nl_matrix	Maximum number of network-layer conversations for which each interface tracks statistics.
[4] Change al_matrix	Maximum number of application-layer conversations for which each interface tracks statistics.
[5] Change dlci_nl hosts	Maximum number of hosts for which each DLCI tracks network-layer statistics.
[6] Change dlci_al_hosts	Maximum number of hosts for which each DLCI tracks application- layer statistics.
[7] Change dlci_nl_matrix	Maximum number of network-layer conversations on which each DLCI stores statistics.
[8] Change dlci_al_matrix	Maximum number of application-layer conversations on which each DLCI stores statistics.
[9] Change min_aging	Number of seconds that a noisy host is allowed to occupy the host/ conversation table. Upon reaching the min_aging period, a host that contains noise is deleted.
[10] Toggle start_protocol_distribution	Tracking of protocol distribution statistics during boot.
[11] Toggle start_nl_host	Tracking of network-layer host statistics during boot.
[12] Toggle start_nl_matrix	Tracking of network-layer conversations during boot.
[13] Toggle enable_other_domains	The other domain feature (represented by the display of a tilde [~] next to a domain name in a domain name list). The default is enabled. If this feature is disabled, the device does not allow installation or monitoring of the tilde domains. See `Using the TrafficDirector Application` for a description of tilde domains.
[14] Toggle enable_all_host	Booting of the device with the HOST group enabled for all default domains. The default is disabled. This flag also automatically turns on the start_nl_host flag. (The HOST group is not installed on any of the default domains if the start_nl_host flag is set to off.)
[15] Toggle enable_all_matrix	Booting of the device with the MATRIX (Conversation) group enabled for all default domains. The default is disabled. This flag automatically also turns on the start_nl_matrix flag. (The MATRIX group is not installed on any of the default domains if the start_nl_matrix flag is set to off.)
[16] Change age_check_interval	The frequency (in seconds) at which the aging algorithm is invoked.
[17] Change noise_threshold	Minimum number of bytes that should be seen at each age_check_interval to distinguish the host as vital rather than noisy. If the host does not meet the minimum setting, it is considered noisy and is deleted from the host/conversation table upon completion of the next min_aging period.

Configuring Default RMON1/RMON2 Parameters

To configure RMON1/RMON2 parameters for all SwitchProbe interfaces, follow these steps:

Step 1 Access the Agent Configuration Utility.

Step 2 Enter 31 and press Enter.

Step 3 Do one of the following:

To configure RMON1 parameters for the selected interface, enter 15 and press Enter.

To configure RMON2 parameters for the selected interface, enter 16 and press Enter.

Step 4 Do one of the following:

If you entered 15, select the RMON1 parameter you want to configure as explained in Table 7-21.

If you entered 16, select the RMON2 parameter you want to configure as explained in Table 7-22.

Step 5 From the main menu, enter 12 for the new settings to take effect.

Upgrading Firmware

SwitchProbe devices are shipped with the latest version of agent firmware already installed in both EPROM and flash memory. However, as Cisco Systems releases new agent firmware, the firmware that was originally shipped with the device might no longer be the most current version. You might want to upgrade or update the agent software in your SwitchProbe device.

The TrafficDirector application supports the most current release of the agent firmware. This agent firmware resides in a hexadecimal file in the $NSHOME/binagent directory. The exact name of the file varies according to the type of device.

Note You must have 512K memory to upgrade the SwitchProbe firmware to Release 4.7.

Table 7-23 lists the firmware file names associated with each SwitchProbe device.

Table 7-23: Release 4.7 Firmware File Names

Device Type		Firmware File Name
		256K Image	512K Image
Ethernet		ns6010.hex
Token Ring		N/A	ns6020bl.hex
FDDI		N/A	ns71etl.hex
Fast Ethernet—
	Fast Ethernet models, memory configuration 32 MB and less Fast Ethernet models, memory configuration 64 MB or more	N/A N/A	ns72hdl.hex ns72fdl.hex
Multiport Ethernet—
	Multiport Ethernet PB7 model Multiport Ethernet PB8 model	N/A N/A	ns7300l.hex ns7300r.hex
Multiport Fast Ethernet		N/A	ns8200.hex
HSSI		N/A	ns74etl.hex
OC-3 ATM		N/A	ns8100.hex
DS-3 ATM		N/A	ns8150et.hex
WAN/Ethernet		N/A	ns6050l.hex
Multiport T1/E1 WAN		N/A	ns8700.hex
Multiport T1/D or E1/D WAN		N/A	ns87cc.hex
Channelized T1/E1 WAN		N/A	ns8800.hex
Gigabit Ethernet		N/A	ns8900.hex

You can download the appropriate hex file to SwitchProbe flash memory using Trivial File Transfer Protocol (TFTP). By default, SwitchProbe devices boot from flash memory. Therefore, when you download new agent firmware to the device, the new agent firmware is loaded in flash memory during boot.

Note When you upgrade agent firmware, the original, factory-installed version of firmware remains in EPROM. Therefore, if the upgrade fails or the flash becomes corrupted, you can force the device to boot from EPROM by setting DIP switch 1 to on. For more information about the DIP switches, see "Physical Description."

You can perform all upgrades from any TFTP server (such as a Sun SPARCstation) on which the TFTP daemon is turned on in the file /etc/inetd.conf, and has a /tftpboot directory present.

To upgrade the firmware in a SwitchProbe device, follow these steps:

Step 1 Retrieve the image file from Cisco Systems.

Step 2 Copy or FTP (in binary mode) the agent firmware file to the /tftpboot directory of the TFTP server.

Step 3 Use the agent console or the TrafficDirector Remote Login application to access the Agent Configuration Utility.

Note

xxx

Step 4 To set the server address, enter 9 and press Enter.

Step 5 When the agent prompts for the TFTP server address, enter the address and press Enter.

Step 6 Verify that the server address is correct before proceeding to Step 7.

Step 7 To initiate the TFTP transfer process and invoke the tftp client, enter the server address and press Enter.

A status report of the tftp upgrade process is displayed. A message indicates that the flash upgrade was successful.

Step 8 Reset the SwitchProbe agent. To do so, see "Resetting a SwitchProbe Agent."

The device reboots using the new agent firmware in flash memory.

Table of Contents

Configuring SwitchProbe Devices

Managing Non-Critical Hosts in Hosts and Conversations Tables

Channelized T1 WAN Link Worksheet Instructions—Interface Settings

Configuring Special Interface Options—Multiport T1/D orE1/D WAN

Multiport T1/D WAN Link Worksheet Instructions—Interface Settings

Configuring
SwitchProbe Devices

Configuring Special Interface Options—Multiport T1/D or
E1/D WAN