Chapter 4: Monitoring Cisco QAM Gateway Devices

This chapter provides information on the monitoring of configured Cisco QAM Gateway devices to ensure proper operation of the network, including information that can be displayed with Cisco QAM Gateway Manager views and by using the command line interface within the application's Telnet window.

Navigation Tree

Using the navigation tree, you can observe the status of all QAM, Ethernet, and ASI ports (see Figure 4-1). When administrative or operating status is down, an X will appear on the icon representing that port. To see the details for a specific port, double-click on the port. The detail QAM, Ethernet, or ASI port view will appear.

Chassis View

The Chassis Status section of the Chassis View displays the components of the device. For each device, each slot number is listed along with the name of the card in that slot, the card type and, for Cisco Catalyst switches, the operating status. Power supplies and fan tray information also is included in the component list. (See Figure 4-2 and Figure 4-3.)

Slot View

Using the Slot View QAM Channels Summary Status Table (see Figure 4-4), you can monitor the status of all the QAM channels in a specific slot. For each QAM channel, the administrative and link status (green for up and red for down), and the number of sessions on that channel are listed.

For Cisco Catalyst switches only, the Ethernet Ports and ASI Port Summary Status Table lists the administrative and link status for Ethernet and ASI ports on the slot—green for up and red for down. (See Figure 4-5.) Double-click on the Ethernet or ASI ports to access the Ethernet or ASI port views.

Note

For the Cisco uMG9820, double-click on a processor card in the navigation tree to access ASI and Ethernet ports.

QAM Channel Summary View

The QAM Summary View (see Figure 4-6) shows on one screen the current configurations for all QAMs in a slot for the following parameters:

Tip

Right-click on a field to copy a value to all other fields in that column.

Telnet - CLI show commands

A variety of show commands provides additional information about the configuration and operation of the devices managed by Cisco QAM Gateway Manager. These commands can be entered using the CLI in the Telnet window. For instructions on how to use the Telnet window, see the "Using the Telnet Window" section on page 3-17. For further information regarding the command-line interface and the commands themselves, including sample output, refer to Configuring the uMG9850 QAM Module, Cisco Catalyst switch documentation listed in the "Related Documentation" section , or the Cisco uMG9820 QAM Gateway Installation and Configuration Guide.

Cisco Catalyst Switches

Table 4-1 describes common show commands for the Cisco Catalyst switch that can be useful for determining status of the switch related to video configuration and operation.

Table 4-1 Cisco Catalyst Switch Show Commands
Show Command	Description
show interface asi interface video	View information about a single QAM channel routed to the output ASI interface: •Port status •QAM channel routed to the ASI interface •Program details (if available).
show interface qam interface video	View video information about both channels on an output QAM interface: •Number of active QAMs and QAM status (up/down) •QAM modulator group number •TSID, NIT PID, and PSI interface values •Upconverter frequency and power, and QAM modulation type •Port error status
show interface qam interface.qam video	View video information about a single QAM channel: •Number of programs and active sessions •TSID and NIT-PID information •Packets per second and bit rate through the channel •Active trick modes •Video and audio format for each session •QAM error status (such as oversubscribed, underflow)
show interface qam interface.qam video portmap	View information about the UDP portmaps on an output QAM interface: •UDP port number, in decimal and hexadecimal •Output program number
show video slot	View information related to the modulator groups, including frequency and power: •Active modulator groups •Upconverter frequency and power for each channel
show video slot psi session	View program-specific information (PSI) related to the input for a selected Cisco uMG9850: •UDP port number and session status •PSI parameters •Source program •Streams and stream types
show video slot route	View video route information related to the input for a selected Cisco uMG9850: •VLAN number and ip-address
show video slot session	View a variety of video details related to sessions for a selected Cisco uMG9850: •For all sessions: –All session information –Input errors –CC errors –Sync loss –Sender information (source IP address and UDP for each session) •For a specified session: –Session start time –Source IP address –Input CC errors –Jitter (peak, average) –Source data rate
show video slot ts_table	View the transport stream ID (TSID) table for each QAM channel for a selected Cisco uMG9850: •TSID for each QAM channel
show video slot version	View software and hardware version information for a selected Cisco uMG9850: •Hardware details •Software details
show {running-config \| startup-config}	View running configuration or startup configuration for the device.

Cisco uMG9820 QAM Gateway

Table 4-2 describes common show commands for the Cisco uMG9820 QAM Gateway that can be useful for determining configuration and status of the uMG9820.

Table 4-2 Cisco uMG9820 QAM Gateway Show Commands
Show Command	Description
show interface asi slot/port	View interface statistics for the ASI port: •Port status •Input packets •Input bytes
show interface gigabitethernet slot/port	View packet and buffer statistics for the specified GE port: •Port status •Hardware address •MTU •Bandwidth •Encapsulation •Duplex •Flow control status •ARP type •Input and output rate
show ip interface gigabitethernet slot/port	View the status of the specified GE port: •Link status (up or down) •Packet and buffer counters
show interface gigabitethernet slot/port video [session UDP-port-number]	View all session information: •User-defined session parameters •Session status (inactive, active, invalid program specific information (PSI) •Jitter buffer status (underflow and overflow count) and average fullness •Continuity count errors
show interface gigabitethernet slot/port video psi [session UDP-port-number]	View all PSI information: •Program number •elementary stream ID •PIDs
show interface fastethernet slot/port	View statistics for the specified FE port: •Packet statistics •Buffer statistics
show ip interface fastethernet slot/port	View port status: •Link status (up or down) •Packet and buffer counters
show interface qam slot/port.qam	View QAM statistics for a specified QAM channel: •Output frequency •Output RF power level •QAM mode •Interleaver depth •Alarm codes
show interface qam slot/port.qam video	View video program data for a specified QAM channel: •Transport stream ID (TSID) and NIT PID •PAT and PMT interval •Bitrate through this QAM •PSI data for each program
show video session {active \| all UDP-port-number}	View video session information for all active sessions, for all sessions (active and inactive) or a specified UDP session: •State •Source IP •Destination UDP •Maps to QAM
show {running-config \| startup-config}	View running configuration or startup configuration for the device.
show env temperature	View environmental statistics related to temperature •PCB temperature •CPU temperature •GE temperature •Midplane temperature •PCR FPGA temperature
show env fan	View environmental statistics related to the fan: •RPM for each fan
show env power	View environmental statistics related to the power: •Processor card voltage •CPU voltage •FPGA voltage •Battery voltage
show env all	View all environmental statistics for temperature, fan, and power.
show env alarms	View environmental alarms (if any).
show version	View software component version numbers.
Show umg9820	View hardware component statistics, including: •Hardware revision numbers •System serial numbers, model numbers and part numbers •MAC addresses •Component model numbers, CLEI numbers, serial numbers, and part numbers

Configuring the ASI Port for QAM Channel Routing

Using the Asynchronous serial interface (ASI) port, you can set or change the gap spacing of data bytes in the ASI port output and route the input of a single QAM channel to the ASI port to monitor the channel.

Note

Routing the input of a QAM channel to the ASI port does not disrupt the RF output.

Setting the Byte-Gap Value (S-Rate) of the ASI Port

(Cisco Catalyst switches only) You can change the gap spacing of the data bytes in the output of the ASI port. The S-rate is the spacing of data bytes (the number of ASI transport null bytes between the data bytes) within the output transport stream. If there is not a sufficient number of data bytes in the stream, padding the stream with null bytes maintains the signal voltage and integrity.

Step 3

Click Apply to save all changes and keep the window open. Click OK to save the changes and close the window. Click Cancel to close the window without any changes.

Routing the Output of a QAM Channel to the ASI Port

You can route the output of a QAM channel (a single program) to the asynchronous serial interface (ASI) port (in ASI signaling format), to monitor the output of the channel. Use a video decoder to view the selected program.

Note

For Cisco uMG9850 QAM modules, the ASI port is always addressed as slot/15.

Step 2

In the QAM Routed menu, choose the QAM whose output you want directed to the ASI port.

Step 3

Click Apply to save all changes and keep the window open. Click OK to save the changes and close the window. Click Cancel to close the window without any changes.

Notification History Table

Setting and Monitoring Utilization Thresholds

It is possible that a given QAM channel can be either overwhelmed or underutilized. To monitor and correct for this, you can set both minimum and maximum bandwidth-utilization thresholds for video streams over a QAM channel. If the percentage of QAM bandwidth being used is below the value for the low utilization threshold, then the QAM channel is being underutilized. If the percentage of QAM bandwidth being used is above the value for high utilization threshold, then the QAM channel is being overutilized.

Note

The high utilization threshold must be greater than the low utilization threshold.

To specify the high and low utilization thresholds for video streams, do the following:

Step 1

Go to QAM Channel Configuration View, Utilization section (see Figure 4-8).

Step 2

Set the Low Utilization Threshold. The range of values is 0 to 95%. The default value is 0%.

Step 3

Set the high Utilization Threshold. The range of values is 5 to 95%. The default value is 75%.

Step 4

Click Apply to save all changes and keep the window open. Click OK to close the window and save all changes. Click Cancel to close the window and discard all changes.

If the percentage of QAM bandwidth being used drops below the low threshold or climbs above the high threshold, an entry appears in the Notification History table (see Figure 4-9).

Warning Messages in Notification History Table

Explanation Data arriving at a VoD-enabled port does not conform to standard MPEG data. MPEG data must have PSI tables embedded within it for a receiver to correctly map the contents.

Application Display Messages

You have launched more than one instance of the application. Ensure that all but one instance has been closed.

Configuration changes have been made. Do you want to copy them to the running configuration?

Configuration loaded to device at ip-address from TFTP server tftp-server-ip-address.

The configuration from the specified TFTP server has successfully loaded to the device at the specified IP address.

Startup configuration of device at ip-address saved to TFTP server ip-address.

The startup configuration of the specified device was successfully saved to the specified TFTP server.

The running configuration of the specified device was successfully saved to a TFTP server.

Running configuration saved to startup configuration for device at ip-address.

The running configuration of the specified device was successfully saved to the device's startup configuration.

The maximum number of simultaneously open views has been reached. In order to open additional views, some of the currently unneeded views must be closed.

Number of active sessions in device at ip-address has changed. Sessions will be rediscovered.

The number of active sessions has changed in the device at the specified address. The sessions will be re-evaluated.

SNMP error occurred while configuring parameter on device at ip-address. Reason: reason

MIB object not responding to set operations: read-only access or incorrect community string.

Attempting to configure SNMP parameters, but neither the root (Cisco QAM Gateway Manager) nor a device is selected in the navigation tree. Select the root to configure polling interval or the device to configure SNMP parameters IP address and community string.

Device is being added and Cisco QAM Gateway Manager cannot make an SNMP query to the device.

View > Chassis was chosen before a device was selected in the navigation tree.

View > Slot or View > Sessions was chosen before a slot was selected in the navigation tree.

View > All Sessions is chosen for the uMG9820 slot. Either select View > Sessions, or select a uMG9850 slot.

File > Load Configuration or File > Save Configuration was chosen before a device was selected in the navigation tree.

Unable to load configuration from TFTP server at ip-address. Please enter file name.

There was an error while loading a configuration from the TFTP server. File name is required.

Unknown error occurred while refreshing device at ip-address. Continue refreshing?

An undetermined error occurred while refreshing the named device. Do you want to keep trying to refresh this device?

A device in the history file is not accessible, or the device is not reachable during a refresh. Do you want to keep trying to refresh this device?

The device has timed out during a refresh. Do you want to keep trying to refresh this device?

Configure VLAN has been chosen while a uMG9820 is selected in the navigation tree. VLANs only can be configured for Cisco Catalyst switches.

The uMG9850 is running in emulation mode. Video sessions mapping cannot be done in emulation mode.

Table Of Contents

Monitoring Cisco QAM Gateway Devices

Navigation Tree

Chassis View

Slot View

QAM Channel Summary View

Telnet - CLI show commands

Cisco Catalyst Switches

Cisco uMG9820 QAM Gateway

Configuring the ASI Port for QAM Channel Routing

Setting the Byte-Gap Value (S-Rate) of the ASI Port

Routing the Output of a QAM Channel to the ASI Port

Notification History Table

Setting and Monitoring Utilization Thresholds

Warning Messages in Notification History Table

Application Display Messages