18-44
Cisco ONS 15600 SDH Procedure Guide, R8.0
October 2007
Chapter18 DLPs F300 to F399
DLP- F342 MS-SPRing Switch Test
Step5 Verify the conditions:
a. Click the Conditions tab.
b. Click Retrieve.
c. Verify that the following conditions are reported on the node where you invoked the Force Ring
switch on the west port:
•FORCE-REQ-RING—A Force Switch Request On Ring condition is reported against the span’s
working slot on the west side of the node.
•RING-SW-EAST—A Ring Switch Active on the east side condition is reported against the
working span on the east side of the node.
Note Make sure the Filter button in the lower right corner of the window is off. Click the Node
column to sort conditions by node.
d. Verify that the following conditions are reported on the node that is connected to the West line of
the node where you performed the switch:
•FE-FRCDWKSWPR-RING—A Far-End Working Facility Forced to Switch to Protection
condition is reported against the working span on the east side of the node.
•RING-SW-WEST—A Ring Switch Active on the west side condition is reported against the
working span on the west side of the node.
Step6 (Optional) If you remapped the K3 byte to run an ONS15600 SDH MS-SPRing through third-party
equipment, check the following condition. Verify a FULLPASSTHR-BI condition reported on other
nodes that are not connected to the west side of the node where you invoked the Force Ring switch.
Step7 Verify the MS-SPRing line status on each node:
a. From the View menu, choose Go to Node View.
b. Click the Maintenance > MS-SPRing tabs.
c. Verify the following:
•The line states are shown as Stby/Stby on the west side of the node and Act/Act on the east side
of the node where you invoked the Force Ring switch.
•The line states are shown as Stby/Stby on the east side of the node and Act/Act on the west side
of the node that is connected to the west line of the node where you invoked the Force Ring
switch.
•The line states are shown as Act/Act on both the east and west sides of the remaining nodes in
the ring.
Step8 From the View menu, choose Go to Network View.
Step9 Click the Alarms tab.
a. Verify that the alarm filter is not on. See the “DLP-F288 Disable Alarm Filtering” task on
page 17-78 for instructions.
b. Verify that no unexplained alarms appear on the network. If unexplained alarms appear, resolve
them before continuing. Refer to the Cisco ONS 15600 Troubleshooting Guide for procedures.
Step10 Display the MS-SPRing window where you invoked the Force Ring switch (the window might be hidden
by the CTC window).