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Cisco ASR 1000 Series Aggregation Services Routers Software Configuration Guide
OL-16506-17
Chapter 11 Network Synchronization Support
Configuring Network Synchronization
Configuring Network Synchronization
You can configure network synchronization on the Cisco ASR 1000 Series Aggregation Services Routers
by performing one of the following procedures:
• Configuring Clock Recovery from SyncE, page 11-8
• Configuring Clock Recovery from a BITS Port, page 11-9
• Configuring SyncE by Using the Line to External Feature, page 11-14
Configuring Clock Recovery from SyncE
This section describes how to configure clock recovery by using the SyncE method.
SUMMARY STEPS
1. configure terminal
2. network-clock synchronization automatic
3. network-clock synchronization ssm option {1 | 2 {GEN1 | GEN2}}
4. interface gigabitethernet slot/card/port
5. synchronous mode
6. exit
7. network-clock input-source priority {interface interface-name slot/card/port | {external
slot/card/port}}
8. exit
DETAILED STEPS
Command Purpose
Step 1
configure terminal
Example:
Router# configure terminal
Enters the global configuration mode.
Step 2
network-clock synchronization automatic
Example:
Router(config)# network-clock
synchronization automatic
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.
Step 3
network-clock synchronization ssm
option {1 | 2 {GEN1 | GEN2}}
Example:
Router(config)# network-clock
synchronization ssm option 2 GEN1
Configures the equipment to work in a synchronization
network. The option_id value 1 refers to a
synchronization network design for Europe. This is the
default value. The option_id value 2 refers to a
synchronization network design for the U.S.