5-43
Cisco ONS 15454 SDH Installation and Operations Guide, R3.3
May 2002
Chapter 5 SDH Topologies
Upgrading From Two-Fiber to Four-Fiber MS-SPRings
Figure 5-32 Upgrading an MS-SPRing
Step 8
Clear the span lockout:
a. Display an MS-SPRing node in node view. Click the Maintenance > Ring tabs.
b. Under West Switch, choose CLEAR. Click Apply.
c. Under East Switch, choose CLEAR. Click Apply.
d. Repeat Steps a – c at each node in the new four-fiber MS-SPRing.
e. Display the network view. Verify that no critical or major alarms are present, nor any facility alarms,
such as LOS or LOF. If an alarm is present, resolve the problem using the Cisco ONS 15454 SDH
Troubleshooting and Maintenance Guide.
Step 9 Test the four-fiber MS-SPRing using the “Provision the MS-SPRing” procedure on page 5-29.
Upgrade MS-SPRing
dialog box
Provisioning tabRing tab
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