17-93
Cisco ONS 15454 Procedure Guide, R5.0
March 2005
Chapter 17 DLPs A1 to A99
DLP-A93 Four-Fiber BLSR Span Switching Test
b. Verify that no unexplained alarms appear on the network. If unexplained alarms appear, resolve
them before continuing. Refer to the Cisco ONS 15454 Troubleshooting Guide if necessary.
Step 11 From the File menu, choose Close to close the BLSR window.
Step 12 Return to your originating procedure (NTP).
DLP-A93 Four-Fiber BLSR Span Switching Test
Step 1 From the View menu, choose Go to Network View.
Step 2 Click the Provisioning > BLSR tabs.
Step 3 Click Edit. A BLSR window appears containing a graphic of the BLSR.
Note If the node icons are stacked on the BLSR graphic, press Ctrl while you drag and drop each one
to a new location so you can see the BLSR port information clearly.
Step 4 Switch the west span:
a. Right-click the west port of the four-fiber BLSR node that you want to exercise and choose Set West
Protection Operation. Figure 19-2 on page 19-11 shows an example.
Note The squares on the network map represent ports. Right-click a working port.
b. In the Set West Protection Operation dialog box, choose FORCE SPAN from the drop-down list.
c. Click OK.
d. Click Yes in the two Confirm BLSR Operation dialog boxes that appear.
On the network view graphic, an F appears on the BLSR channel where you invoked the protection
switch. The BLSR span lines turn purple where the Force Span switch was invoked, and all span
lines between other BLSR nodes turn green.
Step 5 Verify the conditions:
a. Click the Conditions tab.
b. Click Retrieve.
Purpose This task verifies that traffic will switch from working to protect fibers on
a four-fiber BLSR span.
Tools/Equipment None
Prerequisite Procedures DLP-A60 Log into CTC, page 17-66
Required/As Needed Required
Onsite/Remote Onsite
Security Level Provisioning or higher