13-14
Cisco ONS 15454 Procedure Guide, R5.0
December 2004
Chapter 13 Convert Network Configurations
NTP-A267 Convert a Path Protection to a Two-Fiber BLSR Automatically
• Reversion time—Set the amount of time that will pass before the traffic reverts to the original
working path following a ring switch. The default is 5 minutes. Ring reversions can be set to Never.
Step 4 Click Next. If the network graphic appears, go to Step 5.
If CTC determines that a BLSR cannot be created, for example, if not enough optical cards are installed
or if it finds circuits with path protection selectors, a “Cannot Create BLSR” message appears. If this
occurs, complete the following steps:
a. Click OK.
b. In the Create BLSR window, click Excluded Nodes. Review the information explaining why the
BLSR could not be created, then click OK.
c. Depending on the problem, click Back to start over or click Cancel to cancel the operation.
d. Complete the “NTP-A40 Provision BLSR Nodes” procedure on page 5-10, making sure all steps are
completed accurately, then start this procedure again.
Step 5 In the network graphic, double-click a BLSR span line. If the span line is DCC connected to other BLSR
cards that constitute a complete ring, the lines turn blue. If the lines do not form a complete ring,
double-click span lines until a complete ring is formed. Click Next.
Step 6 The UPSR to BLSR Topology Conversion dialog box appears. The dialog box states that the system is
about to force traffic to the shortest path protection paths. Click Next.
Step 7 Another dialog box appears, stating that the force has been applied to the shortest path protection path.
Click Finish.
If the BLSR window appears with the BLSR you created, go to Step 8. If a “Cannot Create BLSR” or
“Error While Creating BLSR” message appears, complete the following:
a. Click OK.
b. In the Create BLSR window, click Excluded Nodes. Review the information explaining why the
BLSR could not be created, then click OK.
c. Depending on the problem, click Back to start over or click Cancel to cancel the operation.
d. Complete the “NTP-A40 Provision BLSR Nodes” procedure on page 5-10, making sure all steps are
completed accurately, then start this procedure again.
Note Some or all of the following alarms might briefly appear during BLSR setup: E-W MISMATCH,
RING MISMATCH, APSCIMP, APSDFLTK, and BLSROSYNC.
Step 8 Verify the following:
• On the network view graphic, a green span line appears between all BLSR nodes.
• All E-W MISMATCH, RING MISMATCH, APSCIMP, DFLTK, and BLSROSYNC alarms are
cleared. See the Cisco ONS 15454 Troubleshooting Guide for alarm troubleshooting.
Note The numbers in parentheses after the node name are the BLSR node IDs assigned by CTC. Every
ONS 15454 in a BLSR is given a unique node ID, 0 through 31. To change it, complete the
“DLP-A326 Change a BLSR Node ID” task on page 20-16.
Stop. You have completed this procedure.
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