Cisco Systems A9014CFD manual Synchronization Example, 22-12

Chapter 22 Configuring Clocking

Configuring Network Clock for Cisco ASR 901 Router

Command	Purpose
network-clock switch force {interface	Forcefully selects a synchronization source irrespective
interface_name slot/port external	of whether the source is available and is within the
slot/card/port}	range.
Example:
Router(config)# network-clock switch
force interface GigabitEthernet 0/1 t1
network-clock switch manual {interface	Manually selects a synchronization source, provided the
interface_name slot/port external	source is available and is within the range.
slot/card/port}
Example:
Router(config)# network-clock switch
manual interface GigabitEthernet 0/1 t1
network-clock clear switch {t0	Clears the forced switch and manual switch commands.
external slot/card/port [10m 2m]}
Example:
Router(config)# network-clock clear
switch t0

Synchronization Example

Example 22-1 Configuration for QL-disabled mode clock selection

network-clock synchronization automatic network-clock input-source 1 interface ToP0/12 network-clock input-source 2 External 0/0/0 10m network-clock input-source 20 interface GigabitEthernet0/1 network-clock input-source 21 interface GigabitEthernet0/4 network-clock output-source system 1 External 0/0/0 e1 crc4

!

interface GigabitEthernet0/1 synchronous mode

synce state slave

!

interface GigabitEthernet0/4 negotiation auto synchronous mode

synce state slave end

Example 22-2 GPS Configuration

10MHz signal

network-clock input-source 1 External 0/0/0 10m 2M signal

network-clock input-source 1 External 0/0/0 2048K

	Cisco ASR 901 Series Aggregation Services Router Software Configuration Guide
22-12	OL-23826-09