C
HAPTER
14
| Basic Administration Protocols
Ethernet Ring Protection Switching
– 511 –
c. An ring node with a local manual switch command that
receives an R-APS message or a local request of higher
priority than R-APS (MS) clear its manual switch request.
The ring node then processes the new higher priority
request.
■
Recovery for manual switching under revertive and non-
revertive mode is described under the Revertive parameter.
■
Clear – Manually clears the protection state which has been
invoked by a forced switch or manual switch command, and the
node is operating under non-revertive mode; or before the WTR or
WTB timer expires when the node is operating in revertive mode.
■
Two steps are required to make a ring operating in non-revertive
mode return to Idle state from forced switch or manual switch
state:
1. Issue a Clear command to remove the forced switch
command on the node where a local forced switch command
is active.
2. Issue a Clear command on the RPL owner node to trigger the
reversion.
■
The Clear command will also stop the WTR and WTB delay
timers and reset their values.
■
More detailed information about using this command for non-
revertive mode is included under the Revertive parameter. (See
the Command Usage section under "ERPS Ring Configuration"
on page 492.)
WEB INTERFACE
To block a ring port:
1. Click Administration, ERPS.
2. Select Configure Domain from the Step list.
3. Select Configure Operation from the Action list.
4. Select the domain name from the drop-down list.
5. Specify a Forced Switch, Manual Switch, or Clear operation.
6. Click Apply.
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