Ntp- D213 Remove An Ms-Spring Node - Cisco ONS 15454 SDH Procedure Manual

NTP- D213 Remove an MS-SPRing Node

Figure 14-3
West
West
Complete the
Step 6
that the MS-SPRing is free of major alarms or problems. If trouble is indicated (for example, if a major
alarm exists), resolve the problem before proceeding. See
refer to the Cisco ONS 15454 SDH Troubleshooting Guide.
From the View menu, choose Go to Other Node. Choose the node that you will remove and click OK.
Step 7
Step 8 Click the Circuits tab. If the Scope setting is set to Network, choose Node from the Scope drop-down
list. Make sure that the Filter button is off (not indented) to ensure that all circuits are visible.
Delete all circuits that originate or terminate on the node. See the
Step 9
page 17-21.
Complete the
Step 10
passing through the node to be deleted enter and exit the node on the same VC4 and/or VC3, VC11, or
VC12.
From the View menu, choose Go to Network View.
Step 11
Referring to the diagram created in
Step 12
Switch" task on page 20-3
from it. You must perform a Force switch at each port connected to the target node. For example, in
Figure
Step 13 Click the Alarms tab.
a. Verify that the alarm filter is not on. See the
page 19-25
b. Verify that no unexplained alarms appear on the network. If alarms appear, investigate and resolve
them before continuing. Refer to the Cisco ONS 15454 Troubleshooting Guide for procedures.
Remove the fiber connections between the node being removed and the two neighboring nodes.
Step 14
Cisco ONS 15454 SDH Procedure Guide, R7.0
14-8
Four-Node, Two-Fiber MS-SPRing Before a Node Is Removed
Tx Tx
Rx Rx
East
Slot 5 Slot 12
Node 1
Tx Tx
Rx Rx
East
Slot 5 Slot 12
Node 4 (to be removed)
"DLP-D298 Check the Network for Alarms and Conditions" task on page 19-83
"DLP-D357 Verify Pass-Through Circuits" task on page 20-64
at each node that connects to the target (removal) node to force traffic away
14-3, you would perform a Force switch on the east port of Node 3 and the west port of Node 1.
as necessary.
West
Slot 5
Tx
Rx
West
Slot 5
Chapter 9, "Manage Alarms"
Step 4, complete the "DLP-D303 Initiate an MS-SPRing Force Ring
"DLP-D227 Disable Alarm Filtering" task on
Chapter 14 Add and Remove Nodes
Tx Tx
Rx Rx
East
Slot 12
Node 2
Tx
Rx
East
Slot 12
Node 3
or, if necessary,
"DLP-D27 Delete Circuits" task on
to verify that circuits
to verify
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