System Management
7750 SR OS Basic System Configuration Guide Page 375
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. When the failed r eference becomes operational, it is eligible for
selection. When the mode is non-revertive, a failed clock source is not selected again.
Default no revert
source-bits
Syntax source-bits slot/mda
no source-bits
Context config>system>sync-if-timing>ref1
config>system>sync-if-timing>ref2
Description This comand configures the source bits for the first (ref1) or second (ref2) timing reference. Note that
this command is only applicable to the 7750 SR-c12 chassis.
Parameters slot/mda — Specifies the chassis slot and MDA containing the BITS port to be used as one of the two
timing reference sources in the system timing subsystem.
Values slot: 1
mda: 1 — 12
source-port
Syntax source-port port-id
no source-port
Context config>system>sync-if-timing>ref1
config>system>sync-if-timing>ref2
Description This command configures the source port for timing reference ref1 or ref2. If the port is unavailable
or the link is down, then the reference sources are re-evaluated according to the reference order
configured in the ref-order command.
On a channelized interface a T1 or an E1 can be specified as the source-port for either ref1 or ref2 .
The only type of T1 or E1 that can be used as a reference is one that has adaptive timing.
The timing reference for ref1 and ref2 must be specified for ports in the following chassis slots:
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