Cisco ASR 903 Guide

Clocking
Sync-E Configuration ▀
Cisco ASR 903 Router Design and Deployment Guide▄
OL-30526-01
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network-clock synchronization mode QL-enabled ! use Qualiy enabled mode
network-clock input-source 10 interface Gig0/1/0 ! elect gi0/1/0 as candidiate
! lower priority is preferred
network-clock input-source 20 interface Gig0/1/1 ! elect gi0/1/1 as candidiate
network-clock wait-to-restore 30 global
esmc process ! enable ESMC process
ASR903-R4 Configuration
interface GigabitEthernet0/1/0
! description to R2
synchronous mode ! enable sync-e under interface
!
interface GigabitEthernet0/1/1
description to R3
synchronous mode
controller E1 0/4/0
clock source internal ! to use synchronized clock
!
network-clock synchronization automatic ! enable clock selection
algorithm
network-clock synchronization ssm option 1 ! to select E1 or T1 type
network-clock synchronization mode QL-enabled ! use Qualiy enabled mode
network-clock input-source 10 interface Gig0/1/1 ! elect gi0/1/1 as candidiate
! lower priority is preferred
network-clock input-source 20 interface Gig0/1/0 ! elect gi0/1/0 as candidiate
network-clock wait-to-restore 30 global
esmc process ! enable ESMC process
Verifying Clocking
ASR903-R1# show network-clock synchronization detail
Symbols: En - Enable, Dis - Disable, Adis - Admin Disable
NA - Not Applicable
* - Synchronization source selected
# - Synchronization source force selected
& - Synchronization source manually switched
Automatic selection process : Enable
Equipment Clock : 2048 (EEC-Option1)
Clock Mode : QL-Enable
ESMC : Enabled
SSM Option : 1
T0 : External R1 e1 crc4 120ohms ! clock is synced to
Hold-off (global) : 300 ms
Wait-to-restore (global) : 30 sec
Tsm Delay : 180 ms

Cisco ASR 903 Specifications

General

Brand	Cisco
Model	ASR 903
Category	Network Router
Language	English