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Cisco ONS 15454 SDH Procedure Guide, R7.0
78-17194-01
Chapter 20 DLPs D300 to D399
DLP- D303 Initiate an MS-SPRing Force Ring Switch
DLP-D303 Initiate an MS-SPRing Force Ring Switch
Caution Traffic is not protected during a Force Ring protection switch.
Step 1 From the View menu, choose Go to Network View.
Step 2 Click the Provisioning > MS-SPRing tabs.
Step 3 Click Edit.
Step 4 To apply a Force switch to the west line:
a. Right-click the west MS-SPRing port where you want to switch the MS-SPRing traffic and choose
Set West Protection Operation (Figure 20-1).
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 MS-SPRing node
icons are based on the network view node icon positions.
Note For two-fiber MS-SPRings, the squares on the node icons represent the MS-SPRing working
and protect channels. You can right-click either channel. For four-fiber MS-SPRings, the
squares represent ports. Right-click either working port.
Figure 20-1 Invoking a Protection Operation on a Three-Node MS-SPRing
Purpose This task performs a Force Ring protection switch on an MS-SPRing. 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-D60 Log into CTC, page 17-49
Required/As Needed As needed
Onsite/Remote Onsite
Security Level Provisioning or higher
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