Cisco ONS 15454 SDH Specifications download pdf (Page 220)

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Cisco ONS 15454 SDH Installation and Operations Guide, R3.3

May 2002

Chapter 5 SDH Topologies

Creating MS-SPRings

Figure 5-24 Setting MS-SPRing properties

•

Ring Type—Select the MS-SPRing ring type, either two-fiber or four-fiber.

• Ring ID—Assign a ring ID (a number between 0 and 9999). Nodes in the same MS-SPRing must

have the same Ring ID.

• Node ID—Assign a Node ID. The Node ID identifies the node to the MS-SPRing. Nodes in the same

MS-SPRing must have unique Node IDs.

• Ring Reversion—Set the amount of time that will pass before the traffic reverts to the original

working path. The default is 5 minutes. All nodes in an MS-SPRing ring should have the same ring

reversion setting, particularly if “never” (i.e., non-revertive) is selected.

• West Port—Assign the west MS-SPRing port for the node.

• East Port—Assign the east MS-SPRing port for the node.

Note The east and west ports must match the fiber connections and DCC terminations set up in the

“Install the MS-SPRing Trunk Cards” procedure on page 5-25 and the “Create the

MS-SPRing DCC Terminations” procedure on page 5-27.

For four-fiber MS-SPRings, complete the following:

• Span Reversion—Choose the amount of time that will elapse before the traffic reverts to the original

working path following a traffic failure. The default is 5 minutes. Span reversions can be set to

Never. If you set a ring reversion time, the times must be the same for both ends of the span. That

is, if Node A’s west fiber is connected to Node B’s east port, the Node A west span reversion time

must be the same as the Node B east span reversion time.

Note To avoid reversion time mismatches, Cisco recommends that you use the same span reversion

time throughout the ring.

Create MS-SPRing

dialog box

Provisioning tab Node view

Create tab

Ring tab

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