Cisco ASR 900 Series Configuration Guide

cem <cem-group-no>
rtp-present
To configure the recovered clock with priority 1, use the following commands:
enable
configure terminal
recovered-clock dcr 200
clock recovered 1 differential cem 1 priority 1
end
To configure clock source in CT3 mode of STS-1 for CESoPSN, use the following commands:
enable
configure terminal
controller sonet 0/4/6
sts-1 1
mode ct3
t1 1 clock source recovered 1
end
To configure CEM interface, use the following commands:
interface cem <bay>/<slot>/<port>
cem <cem-group-no>
rtp-present
To configure the recovered clock with priority 2, use the following commands:
enable
configure terminal
recovered-clock dcr 200
clock recovered 1 differential cem 2 priority 2
end
Verifying Clocking for DCR on APS CT3-T1 in CESoPSN
Use the show recovered-clock command to verify the DCR on APS in CT3 mode for CESoPSN:
Router#show recovered clock
Recovered clock status for SONET-DCR 200
----------------------------------------
Clock Type Mode CEM Status Circuit-No Working Protect
Priority
2 OCx-T1 DIFFERENTIAL 13 ACQUIRED 200/2/1(dcr/t3/t1) ACQUIRED ACQUIRED
1
5 OCx-T1 DIFFERENTIAL 44 ACQUIRING 200/4/1/1(dcr/path/vtg/t1) ACQUIRIN ACQUIRING
1
Configuring Clocking for ACR on APS VT 1.5-T1 in CESoPSN
For clocking, you need to configure Sonet controllers with prriority.
To configure clock source in VT 1.5 mode of STS-1 for CESoPSN, use the following commands:
enable
configure terminal
controller sonet 0/3/6
sts-1 1
mode vt-15
vtg 1 t1 1 clock source recovered 4
end
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)
62
Configuring SONET
Verifying Clocking for DCR on APS CT3-T1 in CESoPSN

Cisco ASR 900 Series Specifications

General

Brand	Cisco
Model	ASR 900 Series
Category	Network Router
Language	English