Cisco ONS 15454 SDH Specifications Page 234

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5-44
Cisco ONS 15454 SDH Installation and Operations Guide, R3.3
May 2002
Chapter 5 SDH Topologies
Moving MS-SPRing Trunk Cards
5.8 Moving MS-SPRing Trunk Cards
Caution To ensure that circuit and provisioning data is preserved, call the Technical Assistance Center before
performing this procedure. For a complete list of TAC phone numbers, refer to the section called
About this Guide in the Product Overview.
Caution To change MS-SPRing trunk cards, you will drop one node at a time from the current MS-SPRing.
This procedure is service affecting during the time needed to complete the steps below. Service
disruption applies to all MS-SPRing nodes where cards will change slots. Review all the steps before
you proceed.
Figure 5-33 shows a four node STM-16 MS-SPRing using trunk cards in Slots 6 and 12 at all four nodes.
In this example, the user moves trunk cards at Node 4 in Slots 6 and 12 to Slots 5 and 6. Node 4 must be
temporarily removed from the active MS-SPRing while the trunk cards are moved.
Figure 5-33 A four-node MS-SPRing before a trunk card switch
Figure 5-34 on page 5-45 shows the MS-SPRing after the cards are moved.
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Node 1
Node 4
Node 3
Node 2
Slot 12 (East)
Slot 6 (West)
Slot 12 (East)
Slot 6 (West)
Slot 12 (East)
Slot 6 (West)
Slot 12 (East)
Slot 6 (West)
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