DETAILED STEPS
PurposeCommand or Action
configure
Step 1
Enters interface configuration mode.
interface type interface-path-id
Example:
RP/0/RSP0/CPU0:router(config)# interface
GigabitEthernet0/1/1/0
Step 2
Enables frequency synchronization on the interface and enters interface
frequency synchronization mode to configure the various options. By
frequency synchronization
Example:
RP/0/RSP0/CPU0:router(config-if)# frequency
synchronization
Step 3
default, this causes the system selected frequency signal to be used for
clocking transmission, but does not enable the use of the interface as
an input.
(Optional) Specifies the interface as a timing source to be passed to
the selection algorithm.
selection input
Example:
RP/0/RSP0/CPU0:router(config-if-freqsync)#
selection input
Step 4
(Optional) Configures the priority of the frequency source on a
controller or an interface. Values can range from 1 (highest priority)
to 254 (lowest priority). The default value is 100.
priority priority-value
Example:
RP/0/RSP0/CPU0:router(config-if-freqsync)#
priority 100
Step 5
This command is used to set the priority for an interface or clock
interface. The priority is used in the clock-selection algorithm to choose
between two sources that have the same quality level (QL). Lower
priority values are preferred.
(Optional) Configures the wait-to-restore time, in minutes, for
frequency synchronization on an interface. This is the amount of time
wait-to-restore minutes
Example:
RP/0/RSP0/CPU0:router(config-if-freqsync)#
wait-to-restore 300
Step 6
after the interface comes up before it is used for synchronization.
Values can range from 0 to 12. The default value is 5.
(Optional) Disables Synchronization Status Messages (SSMs) on the
interface.
ssm disable
Example:
RP/0/RSP0/CPU0:router(config-if-freqsync)#
ssm disable
Step 7
•
For SyncE interfaces, this disables sending ESMC packets, and
ignores any received ESMC packets.
•
For SONET and clock interfaces, this causes DNUs to be sent,
and ignores any received QL value.
(Optional) Specifies the priority of this time source as the time-of-day
(ToD) source. The priority is used as the first criterion when selecting
time-of-day-priority priority
Example:
RP/0/RSP0/CPU0:router(config-if-freqsync)#
time-of-day-priority 50
Step 8
between sources for a time-of-day selection point. Values can range
from 1 (highest priority) to 254 (lowest priority); the default value is
100.
(Optional) Adjusts the QL that is transmitted in SSMs.quality transmit {exact | highest | lowest} itu-t
option ql-option
Step 9
Cisco ASR 9000 Series Aggregation Services Router System Management Configuration Guide, Release 5.1.x
196
Configuring Frequency Synchronization
Configuring Frequency Synchronization on an Interface
To Next Page
Loading...
Need help?
General
