5-27
Cisco ONS 15327 User Documentation, R3.3
June 2002
Chapter 5 SONET Topologies
Unidirectional Path Switched Rings
Figure 5-23 Switching UPSR circuits
Step 4
Click Apply.
Step 5
When the confirmation dialog box appears, click
OK
to confirm the protection switching. The column
under
Switch State
changes to your chosen level of protection.
Step 6
Click
Close
after
Switch State
changes.
Procedure: Add a UPSR Node
Note
You can add only one node at a time. Perform these steps onsite and not from a remote location.
Step 1
Log into CTC and display the UPSR nodes in network view. Verify the following:
•
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 physical UPSR node, all fibers are securely connected to the appropriate ports.
If trouble is indicated, for example, a critical or major alarm exists, resolve the problem before
proceeding.
Step 2
At the node that will be added to the UPSR:
•
Verify that the OC-N cards are installed and fiber is available to connect to the other nodes.
•
Run test traffic through the cards that will connect to the UPSR.
•
Use the
“Setting Up a UPSR” section on page 5-23
to provision the new node.
Step 3
Log into a node that will directly connect to the new node.
Step 4
Use the
“Switch UPSR Traffic” procedure on page 5-25
to initiate a FORCE switch to switch traffic
away from the span that will connect to the new node.
Caution
Traffic is not protected during a protection switch.
Step 5
Two nodes will connect directly to the new node; remove their fiber connections:
a.
Remove the east fiber connection from the node that will connect to the west port of the new node.
Summary of Contents for ONS 15327
Page 22: ...Contents xxii Cisco ONS 15327 User Documentation June 2002 I N D E X ...
Page 30: ...Figures xxviii Cisco ONS 15327 User Documentation June 2002 ...
Page 44: ...Procedures xlii Cisco ONS 15454 Installation and Operations Guide R3 2 June 2002 ...
Page 540: ...Glossary GL 16 Cisco ONS 15327 User Documentation R3 3 June 2002 ...