Remove A Upsr Node - Cisco ONS 15327 User Documentation

Unidirectional Path Switched Rings
b.
Step 6 Replace the removed fiber connections with connections from the new node.
Note
Log out of CTC and then log back in.
Step 7
Display the network view. The new node should appear in the network map. Wait for a few minutes to
Step 8
allow all the nodes to appear.
Click the Circuits tab and wait for all the circuits to appear, including spans. The affected circuit will
Step 9
display as "incomplete."
In the network view, right-click the new node and select Update Circuits With New Node from the list
Step 10
of options. Wait for the confirmation dialog box to appear. Verify that the number of updated circuits
displayed in the dialog box is correct.
Select the Circuits tab and verify that no incomplete circuits are displayed. If incomplete circuits are
Step 11
displayed, repeat Step 9.
Use the
Step 12
Procedure: Remove a UPSR Node
The following procedure is designed to minimize traffic outages while nodes are removed, but traffic
Caution
will be lost when you delete and recreate circuits that passed through the removed node.
Log into a node on the same network as the node you will remove. (Do not log into the node that you
Step 1
will remove.)
From the View menu choose Go to Network View to display the UPSR. Verify the following:
Step 2
•
•
•
•
If trouble is indicated, for example, a critical or major alarm exists, resolve the problem before
proceeding.
Step 3 Delete and recreate the following types of circuits:
a.
b.
c.
Cisco ONS 15327 User Documentation, R3.3
5-28
Remove the west fiber connection from the node that will connect to the east port of the new node.
Perform this step on site at the new node.
"Switch UPSR Traffic" procedure on page 5-25
All UPSR spans on the network map are green.
No critical or major alarms (LOF, LOS, ASP, ASL) are displayed on the Alarms tab.
On the Conditions tab, no UPSR switches are active.
At each UPSR node, all fibers are securely connected to the appropriate ports.
Identify unprotected circuits that pass through the node you are removing and delete and recreate
each circuit one at a time so that they no longer pass through that node.
Identify the UPSR circuits that pass through the node you are removing but do not ingress and egress
on the same STSs and delete and recreate each circuit one at a time so that they ingress and egress
on the same STS.
If a circuit has multiple drops, delete only the drops that terminate on the node you are deleting.
If UPSR circuits ingress and egress on the same STS, the circuit will repair itself when the protection
switch clears.
Chapter 5
to clear the protection switch.
SONET Topologies
June 2002