Cisco ONS 15327 User Documentation page 206

Linear ADM Configurations
Under Protection Groups, select the 1+1 protection group (that is, the group supporting the 1+1 span
Step 3
cards).
Step 4 Under Selected Group, verify that the working slot/port is shown as "Working/Active." If yes, go to Step
5. If the working slot says "Working/Standby" and the protect slot says "Protect/Active," switch traffic
to the working slot:
Under Selected Group, select the protect slot, that is, the slot that says "Protect/Active."
a.
a. From the Switch Commands, select Manual.
Click Yes on the confirmation dialog box.
b.
c. Verify that the working slot is carrying traffic. If it is, continue to Step (d). If not, clear the conditions
that prevent the card from carrying working traffic before proceeding.
d. From the Switch Commands, select Clear. A Confirm Clear Operation dialog is displayed.
Click Yes on the confirmation dialog box.
e.
Repeat Step 4 for each group in the 1+1 Protection Groups list at all nodes that will be converted.
Step 5
For each node, delete the 1+1 OC-N protection group that supports the linear ADM span:
Step 6
Click the Provisioning > Protection tabs.
a.
From the Protection Groups list, choose the group you want to delete. Click Delete.
b.
Click Yes on the confirmation dialog box.
c.
d. Verify that no traffic disruptions are indicated on the SONET test set. If disruptions occur, do not
proceed. Add the protection group and begin troubleshooting procedures to find out the cause of the
disruption.
Note
Step 7 Physically remove one of the protect fibers running between the middle and end nodes. In the
Figure 5-34
corresponding end-node trunk card will display an LOS alarm.
Cisco ONS 15327 User Documentation, R3.3
5-40
Deleting a 1+1 protection group may cause unequipped path (UNEQ-P) alarms to occur.
example, the fiber running from Slot 4/Node 2 to Slot 4/Node 3 is removed. The
Chapter 5 SONET Topologies
June 2002