Cisco ONS 15454 SDH Specifications Page 230

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5-40
Cisco ONS 15454 SDH Installation and Operations Guide, R3.3
May 2002
Chapter 5 SDH Topologies
Removing Nodes from an MS-SPRing
Figure 5-30 Forcing the ring to switch traffic from the login nodes east port
a.
Start CTC for the neighboring node that is connected through its east port to the removed node.
b. Click the Maintenance > Ring tabs.
c. From the East Switch list, choose FORCE RING. Click Apply.
d. Start CTC for the node that is connected through its west port to the removed node.
e. Click the Maintenance > Ring tabs.
f. From the West Switch list, choose FORCE RING. Click Apply.
Step 5 Remove all fiber connections between the node being removed and the two neighboring nodes.
Step 6 Reconnect the two neighboring nodes directly, west port to east port.
Step 7 If the removed node contained trunk STM-16 cards with K3 bytes mapped to an alternate byte, use the
Remap the K3 Byte procedure on page 5-28 to verify and remap, if needed, the MS-SPRing extended
bytes on the newly-connected neighboring nodes.
Step 8 Exit CTC, then Start CTC for a node on the reduced ring.
Step 9 Wait for the MS-SPRing Map Ring Change dialog box to display. When the dialog box displays, click
Yes .
Note If the dialog box does not display after 10 15 seconds, choose the Provisioning > Ring tabs and
click Ring Map.
Step 10 On the MS-SPRing Ring Map dialog box, click Accept.
Step 11 Display the network view, then choose the Circuits tab.
Step 12 Delete, then recreate any incomplete circuits. Any circuits that you recorded in Step 6 will be shown as
incomplete. See the Creating VC High-Order Path Circuits section on page 6-2. Recreate the
incomplete circuits one at a time.
71290
Ring tab
Node view
Force Ring
Maintenance tab
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