Cisco ASR 1000 Series

PurposeCommand
Clears the forced switch and manual switch
commands.
Router# network-clock clear switch {t0 | external
<slot/card/port> [10m | 2m]}
Example:
Router# network-clock clear switch t0
Sample Configuration
Configuration for QL-Enabled Mode Clock Selection
network-clock synchronization automatic
network-clock synchronization mode QL-enabled
network-clock input-source 1 interface GigabitEthernet0/2/0
network-clock input-source 1 interface ATM6/0/0
!
interface GigabitEthernet0/2/1
no ip address
clock source line
synchronous mode
end
!
interface ATM6/0/0
no ip address
atm framing sdh
no atm enable-ilmi-trap
end
Configuration for Line to External
network-clock synchronization automatic
network-clock synchronization mode QL-enabled
network-clock input-source 1 External 3/0/0
network-clock output-source line 1 interface GigabitEthernet3/0/0 External 3/0/0 e1 crc4
interface GigabitEthernet3/0/0
no ip address
no negotiation auto
synchronous mode
GPS Configuration
10MHz signal
network-clock input-source 1 External 3/0/0 10m
2M signal
network-clock input-source 1 External 3/0/0 10m
Verifying Synchronous Ethernet Configuration
Use the show network-clocks synchronization command to display the sample output as shown here:
Router#show network-clocks synchronization
Router# show network-clocks synchronization
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)
Cisco ASR 1000 Series Aggregation Services Routers SIP and SPA Software Configuration Guide, Cisco IOS XE
Everest 16.5
OL-14127-17 141
Configuring the Ethernet SPAs
Configuring the Network Clock for the 2-Port Gigabit Synchronous Ethernet SPA on a Cisco ASR 1000 Series Router