Cisco Asr 1000 Series Aggregation Services Routers Sip And Spa Software Configuration Guide, Cisco Ios - Cisco ASR 1000 Series Software Configuration Manual

Configuring the Network Clock for the 2-Port Gigabit Synchronous Ethernet SPA on a Cisco ASR 1000 Series Router
Command
Router(config)# [no] network-clock
synchronization mode QL-enabled
Example:
Router(config)# network-clock synchronization
mode QL-enabled
Router(config)# [no] esmc process
Example:
Router(config)# esmc process
Router(config)# network-clock hold-off {0 |
<50-10000>} global
Example:
Router(config)# network-clock hold-off 75
global
Router(config)# network-clock external
<slot/card/port> hold-off {0 | <50-10000>}
Example:
Router(config)# network-clock external 3/1/1
hold-off 300
Router(config)# network-clock wait-to-restore
<0-86400> global
Example:
Router(config)# network-clock external
wait-to-restore

Cisco ASR 1000 Series Aggregation Services Routers SIP and SPA Software Configuration Guide, Cisco IOS

XE Everest 16.5
136
1000 global
Configuring the Ethernet SPAs
Purpose
Configures the automatic selection process for
quality-level QL-enabled mode.
QL-enabled mode succeeds only if there are
Note
any synchronization interfaces that are
capable of sending SSM.
Enables or disables the ESMC process at the system
level.
Note This command fails if no SyncE-capable
interface is installed on the platform.
Configures general hold-off timer in milliseconds.
The default value is 300 milliseconds.
Displays a warning message for values
Note
below 300 ms and above 1800 ms.
Overrides hold-off timer value for external interface.
Displays a warning message for values above
Note
1800 ms, as waiting longer causes the clock
to go into the holdover mode.
Sets the value for the wait-to-restore timer globally.
The wait to restore time is configurable in the range
of 0 to 86400 seconds. The default value is 300
seconds.
Ensure that you set the wait-to-restore
Caution
values above 50 seconds to avoid a timing
flap.
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