Cisco ASR 900 Series Configuration Guide

CHAPTER 7
Alarm History
Alarm history or alarm persistence feature enables the maintenance of the history of the port and the path
alarms of the following interface modules:
•
48-Port T1/E1 CEM Interface Module
•
48-Port T3/E3 CEM Interface Module
•
1-Port OC-192 or 8-Port Low Rate CEM Interface Module
History of the port-level and path-level alarms are saved into a file and is retained for monitoring network
events.
•
Alarm History Restrictions, page 129
•
Configuring Alarm History, page 130
•
Verification of Alarm History Configuration, page 130
•
Associated Commands, page 131
•
Additional References for Alarm History, page 131
Alarm History Restrictions
The following restrictions apply for the alarm history feature:
•
Only port and path level alarm history or alarm persistency is supported.
•
Persistence of T1 alarms on a Channelized T3/E3 port or 1-Port OC-192 or 8-Port Low Rate CEM
Interface Module is not supported.
•
Two new files are created after each reboot.
•
The primary and secondary log file are created during feature initialization. The primary log file saves
10000 alarms. When the threshold of 10000 alarms in the primary log file is crossed, the subsequent
10000 alarms are saved in the secondary log file. After crossing the threshold of 10000 alarms in the
secondary log file, the content of primary log file is cleared and is replaced with the subsequent alarms.
•
When a primary file switches to a secondary file and vice versa, the following happens:
1-Port OC-192 or 8-Port Low Rate CEM Interface Module Configuration Guide, Cisco IOS XE Everest 16.7.x (Cisco
ASR 900 Series)
129

Cisco ASR 900 Series Specifications

General

Brand	Cisco
Model	ASR 900 Series
Category	Network Router
Language	English