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This chapter describes the connection methods used to configure and control the Cisco MGX 8220. This chapter contains the following sections:
This section summarizes the user interface connections used to set up and manage the Cisco MGX 8220 shelf.
For more detailed information, see the individual sections later in this chapter.
Release 5.0 of the Cisco MGX 8220 interface shelf allows the user to perform the following management functions:
The Cisco MGX 8220 shelf offers four physical access methods to perform these user interface functions. The physical connection depends on the type of function to be performed.
The functions of these ports are described later in this chapter.
The protocols that can be employed are
A matrix of permissible user interface combinations is provided in Table 3-1.
Table 3-1 UI Function/Access Path/Protocol Combinations
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This section describes the ports that can be used to directly or remotely connect a terminal or workstation.
The maintenance port is the upper RS-232 connector on the ASC back card. The connector is DB-25 (female). The user interface prompt appears when a dumb terminal is connected to the maintenance port and the system is powered up. No special software is required and the connection is made through a standard (not null modem) cable. This arrangement is shown in Figure 3-1. Entering commands using a dumb (or emulated) terminal is the only use for the maintenance port.
The maintenance port configuration includes 8 data bits, no parity, one stop bit, and 9600 bps.
The control port is the middle RS-232 connector on the ASC line module. The connector is an RS-232 DB-25 (female). For this type of connectivity, the control terminal (PC or workstation) must support TCP/IP using a SLIP serial connection. The control port must have been previously configured with an IP address. The control terminal can be connected either locally or remotely using modems. When entering command line commands through the control port, the user interface prompt appears when you perform a Telnet login to the ports IP address.
In-band access uses a portion of the bandwidth of the Cisco MGX 8220 shelf to the Cisco BPX T3 connection by reserving a number of ATM virtual connections for network management functions.
The Cisco MGX 8220 includes built-in security features to prevent unauthorized use of the system. The security features require that each user on the system have a valid account (specified by a userID), password, and privilege level.
The combination of account, password, and privilege level determines which commands the user can enter.
The account (userID) and privilege level are assigned using the adduser command. There is a default password which is used the first time a user logs in. When logged in, the user can change the password to a personal password with the cnfpwd configure password command.
This section describes the following topics:
Each user is assigned an account (userID), which is specified as a parameter in the adduser command. The userID consists of up to 12-alphanumeric characters including letters, numbers, a hyphen, and an underscore. UserIDs are case sensitive.
When a user attempts to log in, the system prompts for a valid userID.
The Cisco MGX 8220 shelf permits one supervisor account and 63 user accounts. The Cisco MGX 8220 shelf ships with a preconfigured superuser account.
Each account is assigned a privilege level when the account is established with the adduser command. Only an established user can enter the adduser command to open a new account. The account you create can only have a privilege level at the same or lower level than your own privilege level.
All commands have an assigned privilege level. A command can only be enter by a user whose privilege level is equal to or above the privilege level of the command. There is one superuser privilege level and six user levels designated 1 to 6 (with 1 being the highest).
A default password is used the first time users log in. When users are logged on, they can change the password entering the cnfpwd command.
The password must consist of 6 to 15 characters. Only letters, numbers, a hyphen, an underscore, and spaces are allowed. The password is case sensitive. For security, the password is not displayed as it is entered.
When a user attempts to log in, the system prompts for a valid password after the userID prompt has been entered. The user must respond with the account's valid password.
This section describes how to set up the various user interface access paths.
Initiating commands to the shelf involves providing the correct user password.
Before you can access Cisco MGX 8220 using the control port, LAN port, or in-band virtual connection, you must configure IP addresses for each of these destinations on the ASC card. To configure IP addresses, proceed as follows:
1. Establish a CLI connection to the shelf (either over the maintenance port or a port that has previously been configured with an IP address).
2. At the login: prompt, enter your userID.
3. At the password: prompt, enter your password.
4. At the card number: prompt, enter the slot number (3 or 4) of the ASC card. For example,
5. At this prompt, enter the cnfifip command to configure the control port, LAN port or in-band port IP address.
The cnfifip command is entered in the following format:
cnfifip -ip ip address -if interface type -msk subnet mask address -bc <broadcast address>
For the control port and Ethernet port, the Cisco MGX 8220 shelf is now configured for you to access the unit using the specified port. See "Connecting Using the Control Port" section and "Connecting using the LAN Port" section for details. For in-band access, you need a connection across the network. See "Connecting using an In-Band Connection" section for details.
When no user is logged into the system the prompt is
To login, users must respond to the login: prompt by entering their userID. Press Enter. This causes the following prompt:
Users must respond with the appropriate password. Press Enter. The first time new users log on, the system requires a password to be entered. Users can change the password at any time. When a correct password has been entered, the following prompt appears:
Enter the slot number of the card to receive the commands. Press Enter. The normal command prompt appears and commands for the specified card/slot can be entered.
To issue commands to another module, enter the cc (change card) command.
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Note The slot number should be from 3 to 14. ASC cards reside in slots 3 and 4. Service modules reside in slots 5 to 14. Slot 15 and slot 16 contain SRM cards and cannot be accessed directly; slot 1 and slot 2 contain BNM cards and also cannot be accessed directly. Commands for the BNM and SRM cards are addressed to the ASC. |
1. After setting up and powering up the Cisco MGX 8220 shelf (see Chapter 5, "Service Configuration"), a CLI login: prompt appears on the terminal connected to the maintenance port.
2. Log in as described in the "Login Procedure"section.
Upon successful login, the standard CLI prompt showing the node name assigned to the shelf, the shelf number, logged in slot number, logged in card type, and status is displayed.
3. At the nodeName.shelf#.slot#.cardType.cardStatus> prompt, CLI commands can be entered.
There are two methods of connecting to the control port.
You can use a PC to access the shelf using Telnet, SNMP, or TFTP by completing the following steps:
1. Set up the control port on the Cisco MGX 8220 shelf entering the cnfifip command and interface type of 28 as described in the "Setting-Up IP Addresses for Control Port, LAN Port, or In-Band Access" section.
2. Make sure the PC has TCP/IP installed and is configured for SLIP communication.
3. Configure the PC COM Port to match the control port (data rate, parity, and so on).
4. Using the control port IP address, ping Cisco MGX 8220 to check connectivity.
5. Start the Telnet application for entering CLI commands, the SNMP manager application for managing Cisco MGX 8220 through SNMP commands, or start the TFTP application to configure or collect statistics.
If the workstation used for entering commands is to be connected over a terminal server, complete the following steps:
1. Set up the control port on Cisco MGX 8220 entering the cnfifipcommand with an interface type of 28. Refer to the "Setting-Up IP Addresses for Control Port, LAN Port, or In-Band Access" section.
2. Make sure the terminal server has TCP/IP installed and is configured for SLIP communication.
3. Configure the terminal server RS-232 port to match that of control port (data rate, parity, and so on).
4. Set up the IP address of the control port of the terminal server (RS-232) to that of Cisco MGX 8220 control port ID address.
5. Using the control port IP address, ping from the X-Term workstation to Cisco MGX 8220 to check connectivity.
6. Using the control port IP address of the Cisco MGX 8220 shelf as the destination address, start the Telnet application for entering CLI commands, the SNMP manager application for managing Cisco MGX 8220 through SNMP commands, or start the TFTP application to configure or collect statistics.
If the communication link hangs while in Telnet, enter the ^[ two-key sequence.
Before you can access Cisco MGX 8220 using the in-band method, you must set up or add a connection across the network. To configure a connection to Cisco MGX 8220 that will terminate on the in-band port of the ASC card, proceed as follows:
1. Configure the Cisco MGX 8220 in-band IP address entering the cnfifip command with an interface type 37. See "Setting-Up IP Addresses for Control Port, LAN Port, or In-Band Access" section.
2. Management connection end points are already configured on the Cisco MGX 8220 shelf. The reserved end points for management purposes are VPI = 3 and VCI = 8 to 15.
3. Add a connection from the BNI connected to the management terminal (directly or indirectly) to the BNI in the Cisco BPX connected to the Cisco MGX 8220 shelf, using a destination address of VPI = 3, and VCI = 8 to 15.
4. Using the in-band IP address of the Cisco MGX 8220 shelf as the destination address, start the application for entering CLI commands, the SNMP manager application for managing Cisco MGX 8220 through SNMP commands, or start the TFTP application to configure or collect statistics.
The LAN port allows the shelf to be connected to an Ethernet network using an appropriate transceiver. Thus a workstation connected to the Ethernet network can communicate directly with the Cisco MGX 8220. The port should be given an IP address to allow TCP/IP protocols to be used.
1. Set up the LAN on Cisco MGX 8220 using cnfifip with an interface type of 26 as described "Setting-Up IP Addresses for Control Port, LAN Port, or In-Band Access" section.
2. Make sure the Ethernet workstation has TCP/IP installed and is configured for TCP/IP communication.
3. Start the Telnet application for entering CLI commands, the SNMP manager application for managing Cisco MGX 8220 through SNMP commands, or start the TFTP application to configure or collect statistics.
The command-line interface (CLI) uses a simple alphanumeric terminal and employs the concept of a system prompt to which the user types in commands.
The CLI also employs the concept of a user being logged into a particular module (slot) in the Cisco MGX 8220 shelf, and all commands entered are assumed to apply to that module (slot). In this way the CLI can be used for managing both the core cards and the service modules.
For security, logging in involves entering a correct preassigned password, which allows the user access only to commands of a specified privilege level or below.
For information on performing some of the management functions using the CWM connection manager and equipment manager, refer to the Cisco WAN Manager Operations Guide.
One command that must be entered using the CLI is the Configure Interface IP address (cnfifip). Because a control station, including CWM, uses an IP address to communicate with the shelf, the various ports on the shelf must first be assigned IP addresses using the cnfifip command.
Each CLI command and its syntax and privilege level is provided in the Cisco MGX 8220 Command Reference.
This procedure must be performed on the Cisco BPX at both ends of the connection ("A" and "B"). This connection is established only once per shelf.
1. Enter the uptrk command to enable the T3 line that connects to your Cisco MGX 8220 shelf.
For trunk number, specify the BNI trunk number used for the Cisco MGX 8220 T3 line.
This command configures the physical line parameters of the T3 line connecting the BNI in the Cisco BPX switch and BNM in the Cisco MGX 8220 shelf. Refer to the Cisco WAN Switching Command Reference for details.
3. Enter the addshelf command to enable the port to the Cisco MGX 8220 shelf.
For trunk number, specify the BNI trunk number used for the Cisco MGX 8220 T3 line. For shelf-type, specify "A" for Cisco MGX 8220, specify the VPI (between 5 and 14) and VCI (between 6 and 271) in the VPI and VCI fields.
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Note The total number of cells for all queues should not exceed 10,000. |
The Cisco MGX 8220 shelf provides the ability to manage the shelf through Simple Network Management Protocol (SNMP) commands. These commands are issued from an SNMP Manager, which accesses the Cisco MGX 8220 shelf either through the Ethernet port, the control port, or in-band connection.
Each ASC and service module in the shelf contains an SNMP agent and a Management Information Base (MIB) for that module. The SNMP agent responds to GET, GET NEXT, and SET commands from the SNMP Manager, thereby providing the user with the ability to interrogate and update the MIB.
All messages from the SNMP manager are checked for the correct community string as follows:
The MIB resides with an object ID of axis under the strataCom branch of the SNMP tree structure (1.3.6.1.4.1.351.110) as shown in Figure 3-6. The MIB consists of five major sections.
The axisSystem section consists of three subsections.
1. The axisShelf contains information about the shelf as a whole such as nodename, time, date, and so forth.
2. The axisAsm contains the shelf alarm table. This table contains the threshold, severity, and status of alarms in the shelf.
3. The axisRedundancy group contains information about the redundant configurations within the shelf.
The cardGeneric section contains objects that are common to all card types. This section contains five subsections.
1. The cardInformation contains card type, card slot, serial number, hardware and firmware revision number, and so forth.
2. The cardInterface contains a list of physical interfaces and service types available on a card.
3. The cardSelftest contains a self-test enable/disable object, the interval between self-tests, and the results of the last self-test.
4. The controlMsgCounter contains the current values of the control SAR counters (control frames transmitted and received, control cells discarded, and so forth).
5. The sarChannelCounter contains the current values of the channel SAR counters. These counters are for ATM cells and are maintained on a per VC basis.
The cardSpecific section contains objects that are specific to a particular type of card. This section contains seven subsections.
1. The bnmClockConfig contains the primary and secondary clock sources, the status and impedance of the external T1/E1 clock input.
2. The bnmAddressTranslation contains shelf, slot, and channel mapping data.
3. The bnmATMCounters contain the ATM counters on the BNM card. These counters contain the current values of ATM cells transmitted, ATM cells received, and so forth.
4. ASC LMI signaling information.
5. The fifth is currently unused.
6. Service module feature information.
7. Service module rate control configuration data.
The axisLines section consists of four subsections.
1. The serialInterface contains information about the serial (maintenance and control ports) lines in the shelf.
2. The ethernetInterface contains information about the Ethernet LAN port in the shelf.
3. The dsx1 contains information about configuration, alarm configuration, alarm status, and counters for the DS1 lines.
4. The dsx3 contains information about configuration, alarm configuration, alarm status, and counters for the DS3 lines.
The axisServices sections consists of the Cisco MGX 8220 service. This section contains information about Frame Relay channel configurations, configurable parameters, and LMI signaling. This section also contains similar MIB objects for ATM services.
The services for Frame Relay are further organized as shown in Figure 3-7.
The MIB is distributed as a text file (ASN.1) on a diskette that can be printed and used to compile the MIB into an SNMP manager. The MIB (and Cisco MGX 8220 shelf) can also be managed from CWM (Release 8.1 and higher). For complete details of managing the shelf from CWM, refer to the Cisco WAN Manager Operations Guide.
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Note MIB variables are identified as read-write or read only. Read-write variable can be accessed by both
GET and SET SNMP commands. Read-only variable can be accessed by GET commands only. When setting a MIB variable in a table, the "enable" variable must also be set in the same SNMP PDU. |
The Cisco MGX 8220 shelf in Release 5.0 supports the transfer of data files between the shelf and a workstation using Trivial File Transfer Protocol (TFTP). The functions provided by these file transfers are the configuring and collection of statistics and the downloading of Cisco MGX 8220 firmware.
In order to perform a file transfer the workstation must establish connectivity with the shelf either through the control port (using SLIP) or through the in-band port. In both cases TCP/IP protocol is employed and the shelf must be assigned an IP address. For details on establishing connectivity, see the "Setting-Up Management Connectivity to the Cisco MGX 8220 Shelf" section.
Cisco MGX 8220 shelves are shipped with the latest version of the firmware already preloaded. Cisco MGX 8220 firmware upgrades can be downloaded over the network. Firmware and firmware upgrades for the Cisco MGX 8220 shelf are also distributed as a Firmware Media Kit on diskettes.
TFTP, either through the control port or in-band ATM, is used for downloading firmware from a workstation into the Cisco MGX 8220 modules.
The host uses the following command sequence to download the firmware:
dest_IP_add is the IP address of the Cisco MGX 8220 shelf receiving the downloaded firmware (via Ethernet, control port, or in-band connection).
3. tftp> put source_file_name dest_file_name
source_file_name is the name of the firmware source file (this can be any name the user has chosen to store the firmware).
dest_file_name is the name of the file to which the firmware is to be downloaded, this must be
AXIS_ASC_1_slot#.FW for downloading to a service module, for example,
AXIS_ASC_1_9.FW for downloading firmware to the service module in slot 9.
AXIS_ASC_1_0.FW for downloading firmware to the ASC for use in any slot 5 - 14.
AXIS_ASC_ACTIVE.FW for downloading to the active ASC.
AXIS_ASC_STANDBY.FW for downloading to the standby ASC.
If the download process is disrupted for a timeout or other such errors, restart the TFTP download process without resetting the Cisco MGX 8220 shelf.
If there is a hardware or system failure that requires resetting the card being downloaded, the firmware must be downloaded using the backup boot procedure. This is a two step procedure.
1. Download the boot firmware.
2. Download the on-line firmware.
If a backup boot procedure becomes necessary, contact technical support for assistance.
After the firmware file has been transferred completely and successfully, the module should be reset for the downloaded firmware to take effect.
Configuring statistics specifies to the shelf where statistic counters are to be collected. A file is constructed that lists the statistic counters to be collected and is downloaded into the shelf using TCP/IP TFTP.
Collecting statistics causes the statistics to be transferred as a data file to the workstation. The workstation first requests the statistics and the Cisco MGX 8220 shelf responds by uploading the statistic file to the workstation. A list of statistics counters for each card type is provided in "Specifications."
The method of collecting statistics in Cisco MGX 8220 conforms to the standards employed in IGX, IPX, and Cisco BPX nodes. CWM (Release 7.2 and later) supports the standard TFTP method of configuring and collecting statistics and can be used on the workstation that is attached to the Cisco MGX 8220 shelf for this purpose. CWM provides a convenient and easy-to-use graphical user interface (GUI) for both configuring the statistics to be collected and actually collecting those statistics from the Cisco MGX 8220 shelf. Using CWM relieves the user of knowing and constructing the file formats required for correctly transferring the statistics files.
Each type of statistic collected in WAN switching networks is categorized under a major grouping known by an object type name and an object type number, and minor grouping known as a subtype. Within the subtype, the statistic has a statistic type number. For example, the statistic "ATM Cell Header HEC Errors" has an object type name of IPX-ATM, an object type of 2, a subtype of 1, and a statistic type of 45. This combination of groups and type number uniquely identify a particular type of statistic.
Each Cisco MGX 8220 statistic can be configured individually for collection. To configure statistics, the workstation transfers a file (filename = enable.stats) using TFTP to the Cisco MGX 8220 shelf, which specifies those statistic types to be collected. The specified statistics are grouped by object type, then by object subtype. Multiple object types each containing multiple object subtypes, each containing multiple statistic types can be specified in one file.
To collect statistics from the Cisco MGX 8220 shelf, the workstation uses the following TFTP command to issue a request:
Upon receipt of this message, the shelf responds with a file containing the collected statistics, as shown in Table 3-2.
Table 3-2 Format of Statistics Collection File
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The Cisco MGX 8220 shelf provides save and restore functions, which are performed using the TFTP facility.
The save function allows a user to copy a service module's current configuration file (which is saved on a disk on the ASC) to a network file system. The restore function allows a user to copy a service module's configuration file from the network file system to the ASC's disk. Using these functions, the configuration files for Cisco MGX 8220 service modules can be backed up to an independent network system and later restored if the configuration files in the Cisco MGX 8220 shelf become lost or corrupted, or if the configuration needs to be restored to a previous version.
This mechanism allows copying a FRSM configuration file (saved on the PCMCIA hard drive) to a network file system using a TFTP file command.
AXIS_SM_1_ slot number.PRI. service user password
<UNIX prompt> tftp AXIS ip address
> get AXIS_SM_1_5.PRI.serviceuser
For example, the command get AXIS_SM_1_5.PRI.serviceuser saves the configuration file for the service module in slot 5 by reading the FRSM 5 configuration stored in the PCMICIA hard drive.
This mechanism allows the user to copy a FRSM configuration file from a network file system to the corresponding FRSM configuration file on ASC PCMCIA hard drive.
AXIS_SM_1_ slot number .PRI. service user password
<UNIX prompt> tftp AXIS address
> put network file name AXIS_SM_1_5.PRI.serviceuser
This will restore the FRSM 5 configuration.
For example, put AXIS_SM_1_5.PRI.serviceuser places the configuration file onto the service module in slot 5.
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Note The uploaded file is a binary file. |
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Note You will lose some configuration changes if they are made after the back-up was performed. The configuration file contains feature information. If they do not match the feature information on the FRSM, the FRSM goes into mismatch state. |
Posted: Thu Nov 20 21:43:06 PST 2003
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