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Cisco ASR 901 Series Aggregation Services Router Software Configuration Guide
OL-23826-09
Chapter 22 Configuring Clocking
Configuring Network Clock for Cisco ASR 901 Router
Configuring Network Clock in Interface Configuration Mode
Complete the following steps to configure the network clock in interface configuration mode:
SUMMARY STEPS
1. enable
2. configure terminal
3. interface
4. synchronous mode
5. network-clock hold-off {0 | 50-10000}
6. network-clock wait-to-restore 0-86400
DETAILED STEPS
Command or Action Purpose
Step 1
enable
Example:
Router> enable
Enables privileged EXEC mode.
• Enter your password if prompted.
Step 2
configure terminal
Example:
Router# configure terminal
Enters global configuration mode.
Step 3
interface
Example:
Router(config)# interface
Enters interface configuration mode.
Step 4
synchronous mode
Example:
Router(config-if)# synchronous mode
Configures the ethernet interface to synchronous mode.
Note This command is applicable to Synchronous
Ethernet capable interfaces. The default value is
asynchronous mode.
Step 5
network-clock hold-off
{
0
|
50-10000
}
Example:
Router(config-if)#network-clock
hold-off
1000
Configures hold-off timer for interface. The default value
is 300 milliseconds.
Note Displays a warning for values below 300 ms and
above 1800 ms.
Step 6
network-clock wait-to-restore
0-86400
Example:
Router(config-if)#network-clock
wait-to-restore 1000
Configures the wait-to-restore timer on the SyncE
interface.
Caution Ensure that you set the wait-to-restore values
above 50 seconds to avoid timing flap.