Cisco ASR 1000 Series Software Configuration Manual page 10

Contents
C H A P T E R 1 1
C H A P T E R 1 2
Cisco ASR 1000 Series Aggregation Services Routers SIP and SPA Software Configuration Guide, Cisco IOS
XE Everest 16.5
x
Troubleshooting the Gigabit Ethernet SPAs
Overview 175
General Troubleshooting Information
Using debug Commands
Using show Commands
Performing Basic Interface Troubleshooting
Verifying the Interface Is Up
Verifying the Line Protocol Is Up
Verifying the CRC Counter
Verifying the Carrier Signal
Understanding SPA Automatic Recovery
When Automatic Recovery Occurs
If Automatic Recovery Fails
Using the Cisco IOS Event Tracer to Troubleshoot Problems
Preparing for Online Insertion and Removal of a SPA
Overview of the POS SPAs
Release History
183
POS Technology Overview
Supported Features
185
SONET/SDH Compliance Features
SONET/SDH Error, Alarm, and Performance Monitoring Features
SONET/SDH Synchronization Features
WAN Protocol Features
Network Management Features
Restrictions
187
Supported MIBs
187
SPA Architecture
188
4-Port OC-3c/STM-1 POS SPA Architecture
Path of a Packet in the Ingress Direction
Path of a Packet in the Egress Direction
2-Port OC-48c/STM-16 POS SPA Architecture
Path of a Packet in the Ingress Direction
Path of a Packet in the Egress Direction
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