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Cisco ONS 15454 SDH Procedure Guide, R7.2
October 2007
Chapter 19 DLPs D200 to D299
DLP- D217 MS-SPRing Exercise Ring Test
Step 5 Exercise the east port:
a. Right-click the east port of any MS-SPRing node and choose Set East Protection Operation.
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 the working or protect ports.
b. In the Set East Protection Operation dialog box, choose EXERCISE RING from the drop-down list.
c. Click OK.
d. In the Confirm MS-SPRing Operation dialog box, click Yes.
On the network view graphic, an E appears on the MS-SPRing channel where you invoked the
exercise. The E will appear for 10 to 15 seconds, then disappear.
Step 6 In the CTC window, click the History tab. Verify that an EXERCISE-RING (Exercising Ring
Successfully) condition appears for the node where you exercised the ring. Other conditions that appear
include EXERCISE-RING-REQ, KB-PASSTHR, and FE-EXERCISING-RING.
If you do not see any MS-SPRing exercise conditions, click the Filter button and verify that filtering is
not turned on. Also, check that alarms and conditions are not suppressed for a node or MS-SPRing drop
cards. See the “NTP-D72 Suppress Alarms or Discontinue Alarm Suppression” procedure on page 9-7
for more information.
Step 7 Click the Alarms tab.
a. Verify that the alarm filter is not on. See the “DLP-D227 Disable Alarm Filtering” task on
page 19-26 as necessary.
b. Verify that no unexplained alarms appear on the network. If unexplained alarms appear, resolve
them before continuing. Refer to the Cisco ONS 15454 SDH Troubleshooting Guide if necessary.
Step 8 From the File menu, choose Close to close the MS-SPRing window.
Step 9 Return to your originating procedure (NTP).