MS-SPRing
Use the MS-SPRing subtab to view multiplex section-shared protection ring (MS-SPRing) information and to perform MS-SPRing and span switches.
 
Item
Description
Type
Displays the MS-SPRing type, either two-fiber or four-fiber.
Rate
Displays the MS-SPRing STM-N rate.
Ring Name
Displays the user-assigned MS-SPRing name.
Node ID
Displays the node’s MS-SPRing identification number.
West Line
Indicates the MS-SPRing west line at the node.
West Switch
Switches the MS-SPRing west line:
CLEAR—Clears a switch event not caused by a line failure.
LOCKOUT PROTECT SPAN—Prevents traffic from reverting to the span with the lockout applied. A lockout overrides other switching commands.
FORCE RING—Forces a switch. The Force Ring command overrides normal protective switching mechanisms. Applying this command incorrectly can cause traffic outages.
MANUAL RING—Initiates a switch.
EXERCISE RING—Tests the MS-SPRing functionality without switching traffic. Ring exercise conditions (including the K-byte pass-through) are reported and cleared within 10 to 15 seconds. The field changes to NO COMMAND after the ring exercise.
NO COMMAND—Indicates that a switch command is not in effect.
East Line
Indicates the MS-SPRing east line at the node.
East Switch
Switches the MS-SPRing east line:
CLEAR—Clears a switch event not caused by a line failure.
LOCKOUT PROTECT SPAN—Prevents traffic from reverting to the span with the lockout applied. A lockout overrides other switching commands.
FORCE RING—Forces a switch. The Force Ring command overrides normal protective switching mechanisms. Applying this command incorrectly can cause traffic outages.
MANUAL RING—Initiates a switch.
EXERCISE RING—Tests the MS-SPRing functionality without switching traffic. Ring exercise conditions (including the K-byte pass-through) are reported and cleared within 10 to 15 seconds. The field changes to NO COMMAND after the ring exercise.
NO COMMAND—Indicates that a switch command is not in effect.
Apply
Applies changes made to the MS-SPRing subtab.
Reset
Cancels any MS-SPRing subtab changes and returns the fields to their last-saved settings.
Help
Displays context-sensitive help.

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