20-3
Cisco ONS 15454 Procedure Guide, R5.0
March 2005
Chapter 20 DLPs A300 to A399
DLP-A303 Initiate a BLSR Force Ring Switch
DLP-A303 Initiate a BLSR Force Ring Switch
Caution
The Force Switch Away command overrides normal protective switching mechanisms. Applying this
command incorrectly can cause traffic outages.
Caution
Traffic is not protected during a Force protection switch.
Step 1
From the View menu, choose
Go to Network Vie
w.
Step 2
Click the
Provisioning > BLSR
tabs.
Step 3
Click
Edit
.
Step 4
To apply a Force switch to the west line:
a.
Right-click the west BLSR port where you want to switch the BLSR traffic and choose
Set West Protection Operation
.
Note
If node icons overlap, drag and drop the icons to a new location. You can also return to
network view and change the positions of the network node icons, because BLSR node icons
are based on the network view node icon positions.
Note
For two-fiber BLSRs, the squares on the node icons represent the BLSR working and protect
channels. You can right-click either channel. For four-fiber BLSRs, the squares represent
ports. Right-click either working port.
b.
In the Set West Protection Operation dialog box, choose
FORCE RING
from the drop-down list.
Click
OK
.
c.
Click
Yes
in the two Confirm BLSR Operation dialog boxes that appear.
On the network graphic, an F appears on the working BLSR channel where you invoked the protection
switch. The span lines change color to reflect the forced traffic. Green span lines indicate the new BLSR
path, and the lines between the protection switch are purple.
Performing a Force switch generates several conditions including FORCED-REQ-RING and WKSWPR.
Step 5
To apply a Force switch to the east line:
a.
Right-click the east BLSR port and choose
Set East Protection Operation
.
Purpose
Use this task to perform a BLSR Force switch on a BLSR port. A Force
ring switch will switch traffic off a span if there is no SD, SF, or lockout
switch present on the span.
Tools/Equipment
None
Prerequisite Procedures
DLP-A60 Log into CTC, page 17-66
Required/As Needed
As needed
Onsite/Remote
Onsite
Security Level
Provisioning or higher
Summary of Contents for ONS 15454 Series
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