Troubleshooting Sonet Automatic Protection System; Introduction; Aps Configuration Problems; Not Able To Correctly Set Up Aps 1+1 Line Redundancy Configuration - Cisco BPX-BXM-155-8DX Installation And Configuration Manual

Chapter 29 Troubleshooting

Troubleshooting SONET Automatic Protection System

Introduction

For APS line redundancy, these problems can occur:
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APS Configuration Problems

The following sections describe possible APS configuration problems.

Not Able to Correctly Set Up APS 1+1 Line Redundancy Configuration

Description: The addapsln user interface command fails to execute correctly for APS 1+1 line
addition.
Release 9.3.0, Part Number 78-10674-01 Rev. D0, July 2001
APS Configuration Problems, page 29-9
Not Able to Correctly Set Up APS 1+1 Line Redundancy Configuration, page 29-9
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– Unable to set up APS 1:1 line redundancy configuration, page 29-10
– Operator information about APS architectures, page 29-10
Operational Problems, page 29-11
What the Various APS Switches Mean
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– Unable to perform APS external switch after forced or manual APS switch, page 29-12
APS manual switch to a line does not occur right away, page 29-12
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Switch occurs after lockout issued, page 29-12
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APS switch made to a line in alarm, page 29-13
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– Reverse switch, page 29-13
– APS switch occurs at the same time as a yred switch, page 29-13
– APS switch occurs after issuing an APS clear switch, page 29-13
– APS Switch Occurs even though APS Forced switch in effect, page 29-14
– APS line is failing to switch, page 29-14
Large cell loss when performing a front card switchover, page 29-14
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APS service switch description, page 29-14
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– APS line does not seem to switch and active line is in alarm, page 29-15
BXM backcard LED green and yellow indications, page 29-15
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– BXM Port LED states, page 29-16
APS Alarms
– What do APS Alarms Represent
Troubleshooting SONET Automatic Protection System
Cisco BPX 8600 Series Installation and Configuration
29-9