14-8
Cisco ONS 15454 SDH Procedure Guide, R7.0
78-17194-01
Chapter 14 Add and Remove Nodes
NTP- D213 Remove an MS-SPRing Node
Figure 14-3
Four-Node, Two-Fiber MS-SPRing Before a Node Is Removed
Step 6
Complete the
“DLP-D298 Check the Network for Alarms and Conditions” task on page 19-83
to verify
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
or, if necessary,
refer to the
Cisco ONS 15454 SDH Troubleshooting Guide
.
Step 7
From the View menu, choose
Go to Other Node
. Choose the node that you will remove and click
OK
.
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.
Step 9
Delete all circuits that originate or terminate on the node. See the
“DLP-D27 Delete Circuits” task on
.
Step 10
Complete the
“DLP-D357 Verify Pass-Through Circuits” task on page 20-64
to verify that circuits
passing through the node to be deleted enter and exit the node on the same VC4 and/or VC3, VC11, or
VC12.
Step 11
From the View menu, choose
Go to Network View
.
Step 12
Referring to the diagram created in
, complete the
“DLP-D303 Initiate an MS-SPRing Force Ring
at each node that connects to the target (removal) node to force traffic away
from it. You must perform a Force switch at each port connected to the target node. For example, in
, you would perform a Force switch on the east port of Node 3 and the west port of Node 1.
Step 13
Click the
Alarms
tab.
a.
Verify that the alarm filter is not on. See the
“DLP-D227 Disable Alarm Filtering” task on
as necessary.
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.
Step 14
Remove the fiber connections between the node being removed and the two neighboring nodes.
78791
West
East
West
East
West
East
West
East
Slot 5
Tx
Rx
Slot 12
Tx
Rx
Node 4 (to be removed)
Slot 5
Tx
Rx
Slot 12
Tx
Rx
Node 2
Node 1
Slot 5
Tx
Rx
Slot 12
Tx
Rx
Node 3
Slot 5
Tx
Rx
Slot 12
Tx
Rx
Summary of Contents for ONS 15454 SDH
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