Cisco ASR 900 Series Configuration Guide

recovered configuration are removed. Hence, the clock starts from the old state and then re-attempts to
recover the clock.
This is an expected behavior.
Use the show recovered-clock command to verify the ACR of T1 interfaces for SAToP:
Router#show recovered-clock
Recovered clock status for subslot 0/1
----------------------------------------
Clock Type Mode Port CEM Status Frequency Offset(ppb)
1 T1/E1 ADAPTIVE 3 1 ACQUIRED 100
Use the show running-config command to verify the recovery of adaptive clock of T1 interfaces:
Router#show running-config
controller T1 0/1/2
clock source recovered 1
cem-group 1 unframed
interface CEM0/1/3
cem 1
no ip address
xconnect 2.2.2.2 10
encapsulation mpls
Associated Commands
LinksCommands
http://www.cisco.com/c/en/us/td/docs/ios-xml/ios/
interface/command/ir-cr-book/
ir-c1.html#wp2440628600
cem-group
http://www.cisco.com/c/en/us/td/docs/ios-xml/ios/
interface/command/ir-cr-book/
ir-c2.html#wp3848511150
clock source
http://www.cisco.com/c/en/us/td/docs/ios-xml/ios/
interface/command/ir-cr-book/
ir-c2.html#wp8894393830
clock recovered adaptive cem
http://www.cisco.com/c/en/us/td/docs/ios-xml/ios/
interface/command/ir-cr-book/
ir-c2.html#wp1472647421
controller t1
http://www.cisco.com/c/en/us/td/docs/ios-xml/ios/
interface/command/ir-cr-book/ir-c2.html
recovered-clock
Configuring ACR for OCn
Configuring ACR in Mode VT15 for SAToP
You must configure ACR for virtual tributary groups (VTG) mode. In this mode, a single STS-1 is divided
into seven VTGs. Each VTG is then divided into four VT1.5, each carrying a T1.
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)
137
Clock Recovery System for SAToP
Configuring ACR for OCn

Cisco ASR 900 Series Specifications

General

Brand	Cisco
Model	ASR 900 Series
Category	Network Router
Language	English