Cisco ASR 900 Series Configuration Guide

mode e3
overhead c2 0
cem-group 1 unframed
e3 clock source recovered 1
DCR Global Configuration
enable
configure terminal
recovered-clock 0 4
clock recovered 1 differential cem 0 1
end
Verifying DCR Configuration
Use show recovered clock command to verify E1 DCR configuration:
#show recovered clockRecovered clock status for subslot 0/4
----------------------------------------
Clock Type Mode CEM Status Frequency Offset(ppb) Circuit-No
1 STMx-E1 DIFFERENTIAL 1 ACQUIRED n/a 0/1/1/1/1
(Port/au-4/tug3/tug2/e1)
Use show recovered clock command to verify E3 DCR configuration:
#show recovered clock
Recovered clock status for subslot 0/4
----------------------------------------
Clock Type Mode CEM Status Frequency Offset(ppb) Circuit-No
1 STMx-E3 DIFFERENTIAL 1 ACQUIRED n/a 0/1/1
(Port/au-4/tug3)
Configuring ACR and DCR for CESoPSN
Configuring ACR for CESoPSN
To configure CEM for CESoPSN:
router#configure terminal
router(config)#controller sdh 0/5/0
router(config-controller)#au-3 1
router(config-ctrlr-au3)#tug-2 1 payload vc11
router(config-ctrlr-tug2-vcx)#t1 1 clock source recovered 1
router(config-ctrlr-tug2-vcx)#end
To configure CEM for CESoPSN:
router#configure terminal
router(config)#controller sdh 0/5/0
router(config-controller)#au-3 1
router(config-ctrlr-au3)#tug-2 1 payload vc11
router(config-ctrlr-tug2-vcx)#t1 2 clock source recovered 1
router(config-ctrlr-tug2-vcx)#end
To configure recovered clock for CESoPSN:
router#configure terminal
router(config)#recovered-clock 0 5
router(config-clock)#clock recovered 1 adaptive cem 0 1 priority 1
router(config-clock)#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)
109
Configuring SDH on 1-Port OC-192/STM-64 or 8-Port OC-3/12/48/STM-1/-4/-16 Module
Configuring ACR and DCR for CESoPSN

Cisco ASR 900 Series Specifications

General

Brand	Cisco
Model	ASR 900 Series
Category	Network Router
Language	English