Cisco ONS 15454 SDH Specifications Page 241

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Cisco ONS 15454 SDH Installation and Operations Guide, R3.3
May 2002
Chapter 5 SDH Topologies
Subtending Rings
Procedure: Subtend an MS-SPRing from an MS-SPRing
Step 1 In the node that will subtend the MS-SPRing (Node 4 in Figure 5-37 on page 5-48), install the STM-N
cards that will serve as the MS-SPRing trunk cards (Node 4, Slots 6 and 13).
Step 2 Attach fibers from these cards to the MS-SPRing trunk cards on the MS-SPRing nodes. In Figure 5-37
on page 5-48, Node 4/Slot 6 connects to Node 7/Slot 13, and Slot 13 connects to Node 5/Slot 6.
Step 3 From the node view, click the Provisioning > SDH DCC tabs.
Step 4 Click Create.
Step 5 In the Create SDCC Terminations dialog box, click the slot and port that will carry the MS-SPRing.
Step 6 Set the ports in service by making sure the Set Port In Service checkbox is checked.
Step 7 Click OK.
Step 8 The selected slots/ports are displayed in the SDCC Terminations section.
Step 9 To configure the MS-SPRing, use the Provision the MS-SPRing procedure on page 5-29. The
subtending MS-SPRing must have a ring ID that differs from the ring ID of the first MS-SPRing.
Step 10 Follow Steps 1 9 for the other nodes that will be in the subtending MS-SPRing.
Step 11 Display the network view to see the subtending ring.
Figure 5-38 shows an example of two subtending MS-SPRings.
Figure 5-38 Viewing subtending MS-SPRings on the network view
Purpose Use this procedure to subtend an MS-SPRing from an MS-SPRing.
Subtending rings from an ONS 15454 SDH reduces the number of nodes
and cards required and reduces external shelf-to-shelf cabling.
Prerequisite Procedures This procedure requires an established MS-SPRing and one node with
STM-N cards and fibers to carry the MS-SPRing. The procedure also
assumes you know how to set up an MS-SPRing. For MS-SPRing setup
procedures, see the Creating MS-SPRings section on page 5-15.
Onsite/Remote Onsite
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