T1 Alarms; T3 Alarms; Alarm Indicators; How To Configure Sonet - Cisco ASR 900 Series Configuration Manual

Configuring SONET

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
Alarm Indicators
ASR 900 Series)
35