Figure 13-2 Four-Node, Two-Fiber Blsr Before A Node Is Removed - Cisco ONS 15327 Procedure Manual

NTP-B213 Remove a BLSR Node

Figure 13-2 Four-Node, Two-Fiber BLSR Before a Node Is Removed

West
West
Complete the
Step 4
verify that the BLSR is free of alarms. If trouble is indicated (for example, a major alarm exists), resolve
the problem before proceeding. See
15327 Troubleshooting Guide.
Step 5 From the View menu choose Go to Other Node. Choose the node that you will remove and click OK.
Click the Circuits tab. If the Scope setting is set to Network, choose Node from the Scope pull-down
Step 6
menu. Make sure 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 7
on page
Complete the
Step 8
passing through the target node enter and exit the node on the same STS and/or VT.
From the View menu choose Go to Network View.
Step 9
Referring to the diagram created in
Step 10
Switch" task on page 13-6
target node. You must perform a Force switch at each port connected to the target node. For example, in
Figure
Step 11 Click the Alarms tab. If unexpected critical or major alarms are present, resolve them before you
continue. If necessary, refer to the alarm troubleshooting procedures in the Cisco ONS 15327
Troubleshooting Guide.
Remove the fiber connections between the target node and the two neighboring nodes.
Step 12
Reconnect the fiber of the two neighboring nodes directly, west port to east port.
Step 13
Cisco ONS 15327 Procedure Guide, R4.0
13-10
Slot 1 Slot 2
Tx Rx Tx Rx
Node 1
Node 1 Fiber connected
to Slot 2 (East)
Slot 1 Slot 2
Tx Rx Tx Rx
Node 3
Node 4 Fiber connected
to Slot 1 (West)
"DLP-B302 Check BLSR or Path Protection Alarms and Conditions" task on page 13-5
8-15.
"DLP-B304 Verify BLSR Pass-Through Circuits" task on page 13-11
at each node that connects to the target node to force traffic away from the
13-2, you would perform a Force switch on the east port of Node 4 and the west port of Node 1.
Slot 1
Tx
East West
Slot 1
Tx
East West
Chapter 6, "Manage Alarms"
Step 1, complete the "DLP-B303 Initiate a BLSR Force Ring
Chapter 13 Add and Remove Nodes
Slot 2
Rx Tx Rx
East
Node 2
Slot 2
Rx Tx Rx
East
Node 4
or, if necessary, refer to the Cisco ONS
"NTP-B152 Delete Circuits" procedure
to verify that circuits
to
March 2003