Cisco ASR 900 Series Configuration Guide

7
Device 2 sends K2 byte over the new active line to Device 1 . Device 1 receives this signal and starts
accepting the data from this new active line.
Scenario for Unidirectional MSP 1+1
Figure 9: Unidirectional MSP 1+1
In the above figure, two devices are connected to provide MSP 1+1 unidirectional protection. The figure
shows a working line and a protection line. The traffic is transmitted on both working and protection line and
received only on one line.
In a scenario where you encounter a fiber cut,
1
Device 1 receives a LOS on RX working line.
2
Device 2 detects LOS and starts receiving the data from the protection line. The protection line now
becomes the active line.
3
Device 1 receives the K2 byte and knows about switching event on device 2.
Configuring MSP for SAToP
This section describes the configuration of MSP.
Configuring Bi-directional MSP (SDH Framing)
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)
116
Configuring MSP on 1-Port OC192/STM-64 or 8-Port OC3/12/48/STM-1/-4/-16 Module
Scenario for Unidirectional MSP 1+1

Cisco ASR 900 Series Specifications

General

Brand	Cisco
Model	ASR 900 Series
Category	Network Router
Language	English