CHAPTER
20-1
Cisco ASR 1000 Series Aggregation Services Routers SIP and SPA Software Configuration Guide
OL-14127-08
20
Troubleshooting the Serial SPAs
This chapter describes techniques that you can use to troubleshoot the operation of your serial SPAs.
It includes the following sections:
• General Troubleshooting Information, page 20-1
• Performing Basic Interface Troubleshooting, page 20-2
• Using Bit Error Rate Tests, page 20-15
• Using loopback Commands, page 20-18
• Using the Cisco IOS Event Tracer to Troubleshoot Problems, page 20-19
• Preparing for Online Insertion and Removal of a SPA, page 20-19
The first section provides information about basic interface troubleshooting. If you are having a problem
with your SPA, use the steps in the
“General Troubleshooting Information” section on page 20-1 to begin
your investigation of a possible interface configuration problem.
To perform more advanced troubleshooting, see the other sections in this chapter.
For more information about troubleshooting serial lines, see the Internetwork Troubleshooting
Handbook at
http://www.cisco.com/univercd/cc/td/doc/cisintwk/itg_v1/index.htm.
General Troubleshooting Information
This section describes general information for troubleshooting SIPs and SPAs. It includes the following
sections:
• Interpreting Console Error Messages, page 20-1
• Using debug Commands, page 20-2
• Using show Commands, page 20-2
Interpreting Console Error Messages
To view the explanations and recommended actions for Cisco 7600 series router error messages,
including messages related to Cisco
7600 series router SIPs and SPAs, refer to the System Error
Messages for Cisco IOS Release publication for your Cisco IOS software release.
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