Cisco ASR 9000 Series User Manual

PurposeCommand or Action
(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 6
(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 7
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 8
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 9
•
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 10
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 11
• exact ql—Specifies the exact QL to send, unless DNU would
otherwise be sent.
Example:
RP/0/RSP0/CPU0:router(config-clk-freqsync)#
quality transmit
highest itu-t option 1 prc
• highest ql—Specifies an upper limit on the QL to be sent. If the
selected source has a higher QL than the QL specified here, this
QL is sent instead.
• lowest ql—Specifies a lower limit on the QL to be sent. If the
selected source has a lower QL than the QL specified here, DNU
is sent instead.
The quality option specified in this command must match the
globally-configured quality option in the quality itu-t option
command.
Cisco ASR 9000 Series Aggregation Services Router System Management Configuration Guide, Release 5.1.x
200
Configuring Frequency Synchronization
Configuring Frequency Synchronization on a Clock Interface

Cisco ASR 9000 Series Specifications

General

Brand	Cisco
Model	ASR 9000 Series
Category	Network Router
Language	English