Cisco ONS 15454 SDH - Figure 19-4 Protection Operation on a Three-Node MS-Spring

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Cisco ONS 15454 SDH Procedure Guide, R7.0
78-17194-01
Chapter 19 DLPs D200 to D299
DLP- D217 MS-SPRing Exercise Ring Test
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 or protect ports.
Figure 19-4 Protection Operation on a Three-Node MS-SPRing
b.
In the Set West 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 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.