Figure 5-14 A Four-Node Blsr After The Trunk Cards Are Switched At One Node - Cisco ONS 15327 User Documentation

Bidirectional Line Switched Rings

Figure 5-14 A four-node BLSR after the trunk cards are switched at one node

Slot 3 (West)
Node 1
Slot 1 (West)
Node 4
Procedure: Move a BLSR Trunk Card
Use the following steps to move one BLSR trunk card to a different slot. Use this procedure for each
card you want to move. Although the procedure is for OC-48 BLSR trunk cards, you can use the same
procedure for OC-12 cards.
The ONS 15327 nodes must have CTC Release 3.3 or later and cannot have active alarms for the
Note
OC-48 or OC-12 cards or the BLSR configuration.
Log into CTC and display the BLSR nodes in network view. Verify the following:
Step 1
•
•
•
If trouble is indicated, for example, a critical or major alarm exists, resolve the problem before
proceeding. See
Step 2 Switch traffic away from the node where the trunk card will be switched:
a.
b.
Cisco ONS 15327 User Documentation, R3.3
5-18
Slot 2 (East)
Slot 4 (East)
All BLSR spans on the network map are green.
On the Alarms tab, no critical or major alarms are present, nor any facility alarms, such as LOS,
LOF, AIS-L, SF, and SD. In a BLSR, these facility conditions may be reported as minor alarms.
On the Conditions tab, no ring switches are active.
Chapter 14, "Alarm Troubleshooting,"
Log into the node that is connected through its east port to the node where the trunk card will be
moved. (In the Figure 5-13
From the East Switch list, choose FORCE RING. Click Apply.
Slot 3 (West)
Slot 3 (West)
Unchanged fiber route
Changed fiber route
for alarm troubleshooting procedures.
example, this is Node 1.) Click the Maintenance > Ring tabs.
Chapter 5 SONET Topologies
Slot 2 (East)
Node 2
Slot 2 (East)
Node 3
June 2002