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 11 Troubleshooting the Gigabit Ethernet SPAs
Preparing for Online Insertion and Removal of a SPA
Event tracing works by reading informational messages from specific Cisco IOS software subsystem
components that have been preprogrammed to work with event tracing, and by logging messages from
those components into system memory. Trace messages stored in memory can be displayed on the screen
or saved to a file for later analysis.
The SPAs currently support the “spa” component to trace SPA OIR-related events.
For more information about using the Event Tracer feature, refer to the following URL:
http://www.cisco.com/en/US/docs/ios/12_0s/feature/guide/evnttrcr.html
Preparing for Online Insertion and Removal of a SPA
The Cisco ASR 1000 Series Routers support online insertion and removal (OIR) of the SIP, in addition
to each of the SPAs. Therefore, you can remove a SIP with its SPAs still intact, or you can remove a SPA
independently from the SIP, leaving the SIP installed in the router.
This means that a SIP can remain installed in the router with one SPA remaining active, while you
remove another SPA from one of the SIP subslots. If you are not planning to immediately replace a SPA
into the SIP, then be sure to install a blank filler plate in the subslot. The SIP should always be fully
installed with either functional SPAs or blank filler plates.
For more information about activating and deactivating SPAs in preparation for OIR, see Chapter 5,
“Troubleshooting the SIP.”

Cisco ASR 1000 Specifications

General

Brand	Cisco
Model	ASR 1000
Category	Network Router
Language	English