Cisco ASR 900 Series Configuration Guide

T1 Alarms
The following T1 alarms are supported:
• LOS — DS1/E1 Line loss of Signal
• AIS — DS1/E1 Path Alarm Indication Signal
• AIS-CI — DS1/E1 Path Alarm Indication Signal Customer Installation
• LOF — DS1/E1 Path Loss of Frame
• RDI/RAI — Remote Defect Indication or Remote Alarm Indication
• RAI-CI — Remote Alarm Indication Customer Installation
•
TCA for Line and Path DS1
T3 Alarms
The following T3 or path alarms are supported:
• LOS — DS3/E3 Line Loss of Signal
• OOF — DS3/E3 Path Loss of Frame
• SEF — DS3/E3 Path Severely Errored Frame
• AIS — DS3/E3 Path Alarm Indication Signal
• SEF/AIS-FE — Far End SEF/AIS
•
TCA for Line and Path DS3
Alarm Indicators
Typically, a failure condition detected by a SONET chassis results in one or more error conditions sent both
upstream and downstream on the network. An AIS is sent in order to alert downstream chassis of a problem
and in order to prevent consequential downstream failures or alarms from being raised.
How to Configure SONET
This section describes how to configure SONET.
Each SFP port (0-7) can be configured as OC-3, OC-12, OC-48, or Gigabit Ethernet. SFP+ port (8) can be
configured as OC-192 or 10 Gigabit Ethernet.
To use the above features, you need to apply a valid license.Note
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)
35
Configuring SONET
Alarm Indicators

Cisco ASR 900 Series Specifications

General

Brand	Cisco
Model	ASR 900 Series
Category	Network Router
Language	English