Cisco ASR1000-RP1 - ASR 1000 Series Route Processor 1 Router Software Configuration Manual page 306

Configuring Synchronous Ethernet
Command
Step 3
network-clock synchronization automatic
Example:
Router(config)# network-clock
synchronization automatic
Step 4
network-clock synchronization ssm
option {option_id {GEN1 | GEN2}}
Example:
Router(config)# network-clock
synchronization ssm option 2 GEN1
Step 5
interface gigabitethernet slot/port
Example:
Router(config)# int gig 0/0/0
Step 6
synchronous mode
Example:
Router(config-if)# synchronous mode
Step 7
exit
Example:
Router(config)# exit
Step 8
network-clock output-source line
priority {interface interface_name}
{external slot/card/port}
Example:
Router(config-if-srv)# encapsulation
dot1q 40 second-dot1q 42
Step 9
exit
Example:
Router(config)# exit
Cisco ASR 1000 Series Aggregation Services Routers Software Configuration Guide
10-10
Chapter 10
Purpose
Enables the network clock selection algorithm. This
command disables the Cisco-specific network clock
process, and turns on the G.781-based automatic clock
selection process.
Configures the equipment to work in a synchronization
network. The option_id value 1 refers to a
synchronization networks design for Europe. This is the
default value. The option_id value 2 refers to a
synchronization networks design for the U.S.
Specifies the Gigabit Ethernet interface to be
configured:
slot/port—Specifies the location of the interface.
Sets the mode to synchronous mode.
Exits the specific configuration mode.
Configures the line clock to be used on external Tx
interfaces.
Exits the global configuration mode.
Synchronous Ethernet Support
OL-16506-10