Basic System Configuration Guide System Management
Edition: 01 3HE 11010 AAAC TQZZA 381
• two ports on the Packet Microwave Adapter card: on port 1 or 2, it could be a
synchronous Ethernet or PCR-enabled port; on port 3 or 4, it could be a synchronous
Ethernet (optical SFP only) or PCR-enabled port (copper-based SFP only); on ports 5
through 8, it could be a synchronous Ethernet (optical SFP only) port.
The no form of this command deletes the source port from the reference. An example of when
the no form would be used is if the user wants to change the reference to a source IP
interface in order to enable PTP. In this case, the user would first delete the PTP using the
no source-port command, then configure the source IP interface using the source-ptp-clock
command.
Parameters port-id — identifies the port in the slot/mda/port format
adaptive — clock recovery is adaptive, rather than line-timed
source-ptp-clock
Syntax source-ptp-clock clock-id
no source-ptp-clock
Context config>system>sync-if-timing>ref1
config>system>sync-if-timing>ref2
Description This command configures the reference source clock using the clock ID configured by the
PTP clock command.
Default no source-ptp-clock
Parameters clock-id — identifies the PTP clock to use as the reference source clock
Values 1 to 16
revert
Syntax [no] revert
Context config>system>sync-if-timing
Description This command allows the clock to revert to a higher-priority reference if the current reference
goes offline or becomes unstable. With revertive switching enabled, the highest-priority valid
timing reference will be used. If a reference with a higher priority becomes valid, a reference
switchover to that reference will be initiated. If a failure on the current reference occurs, the
next highest reference takes over. With non-revertive switching, the active reference will
always remain selected while it is valid, even if a higher-priority reference becomes available.
If this reference becomes invalid, a reference switchover to a valid reference with the highest
priority will be initiated. When the failed reference becomes operational, it is eligible for
selection.
Default no revert
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