Cisco ASR 1000 Configuration Guide

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Cisco ASR 1000 Series Aggregation Services Routers SIP and SPA Software Configuration Guide
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Chapter 20 Troubleshooting the Serial SPAs
Performing Basic Interface Troubleshooting
System error messages are organized in the documentation according to the particular system facility
that produces the messages. The SIP and SPA error messages for serial SPAs use the following facility
names:
• Cisco ASR 1000 Series SIP—ASR1000_SIP
• 2-Port and 4-Port Channelized T3 SPA—SPA_CHOC_DSX
• 2-Port and 4-Port Clear Channel T3/E3 Serial SPA—SPA_T3E3
Using debug Commands
Caution Because debugging output is assigned high priority in the CPU process, it can render the system
unusable. For this reason, use debug commands only to troubleshoot specific problems or during
troubleshooting sessions with Cisco technical support staff. Moreover, it is best to use debug commands
during periods of lower network traffic and fewer users. Debugging during these periods decreases the
likelihood that increased debug command processing overhead will affect system use.
Along with the other debug commands supported on the Cisco 7600 series router, you can obtain
specific debug information for SPAs on the Cisco
7600 series router using the debug hw-module
subslot privileged EXEC command.
The debug hw-module subslot command is intended for use by Cisco technical support personnel. For
information about other debug commands supported on the Cisco
7600 series router, refer to the Cisco
IOS Debug Command Reference and any related feature documents for your Cisco IOS software release.
Using show Commands
There are several show commands that you can use to monitor and troubleshoot the SIPs and SPAs on
the Cisco
7600 series router. This chapter describes using the show interfaces and show controllers
commands to perform troubleshooting of your SPA.
For more information about show commands to verify and monitor SIPs and SPAs, see the following
chapters of this guide:
• Chapter 15, “Configuring the 8-Port Channelized T1/E1 SPA”
• Chapter 16, “Configuring the 2-Port and 4-Port Channelized T3 SPAs”
• Chapter 17, “Configuring the 2-Port and 4-Port Clear Channel T3/E3 SPAs”
• Chapter 18, “Configuring the 4-Port Serial Interface SPA”
• Chapter 19, “Configuring the 1-Port Channelized OC-3/STM-1 SPA and 1-Port Channelized
OC-12/STM-4 SPA”
Performing Basic Interface Troubleshooting
You can perform most of the basic interface troubleshooting using the show interfaces serial command
and examining several areas of the output to determine how the interface is operating.
The output of the show interfaces serial EXEC command displays information specific to serial
interfaces.

Cisco ASR 1000 Specifications

General

Brand	Cisco
Model	ASR 1000
Category	Network Router
Language	English