21-5
Cisco ONS 15454 Procedure Guide, R5.0
March 2005
Chapter 21 DLPs A400 to A499
DLP-A417 View the BLSR Squelch Table
DLP-A417 View the BLSR Squelch Table
Step 1 In node view, click the Provisioning > BLSR tabs.
Step 2 Click the BLSR whose squelch table you want to view.
Step 3 Click Squelch Table. In the BLSR Squelch Table window you can view the following information:
• STS Number—Shows the BLSR STS numbers. For two-fiber BLSRs, the number of STSs is half
the BLSR OC-N, for example, an OC-48 BLSR squelch table will show 24 STSs. For four-fiber
BLSRs, the number of STSs in the table is the same as the BLSR OC-N.
• West Source—If traffic is received by the node on its west span, the BLSR node ID of the source
appears. (To view the BLSR node IDs for all nodes in the ring, click the Ring Map button.)
• West Dest—If traffic is sent on the node’s west span, the BLSR node ID of the destination appears.
• East Source—If traffic is received by the node on its east span, the BLSR node ID of the source
appears.
• East Dest—If traffic is sent on the node’s east span, the BLSR node ID of the destination appears.
Note BLSR squelching is performed on STSs that carry STS circuits only. Squelch table entries
will not appear for STSs carrying VT circuits or Ethernet circuits to or from E-Series
Ethernet cards provisioned in a multicard Ethergroup.
Step 4 Return to your originating procedure (NTP).
Purpose This task allows you to view the BLSR squelch table for an ONS 15454
BLSR node. The table shows STSs that will be squelched for every isolated
node. Squelching replaces traffic by the appropriate path alarm indication
signal (AIS); it prevents traffic misconnections when a working channel
service contends for access to a protection channel time slot carrying extra
traffic. For more information about BLSR squelching, refer to Telcordia
GR-1230.
Tools/Equipment None
Prerequisite Procedures DLP-A60 Log into CTC, page 17-66
Required/As Needed As needed
Onsite/Remote Onsite or remote
Security Level Retrieve or higher
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