Figure 5-26 A Blsr Subtending From A Blsr - Cisco ONS 15327 User Documentation

Subtending Rings

Figure 5-26 A BLSR subtending from a BLSR

Slot 1
West
Slot 2
East
Node 2
Slot 1
West
Slot 2
East
After subtending two BLSRs, you can route circuits from nodes in one ring to nodes in the second ring.
For example in
travel from Node 1 to Node 4 to Node 7. If fiber breaks occur, for example between Nodes 1 and 4 and
Nodes 4 and 7, traffic is rerouted around each ring: in this example, Nodes 2 and 3 in Ring 1 and Nodes
5 and 6 in Ring 2.
Procedure: Subtend a BLSR from a BLSR
This procedure requires an established BLSR and one BLSR node with OC-N cards and fibers to carry
the BLSR. The procedure also assumes you know how to set up a BLSR. For BLSR setup procedures,
see the
In the node that will subtend the BLSR (Node 4 in
Step 1
as the BLSR trunk cards (Node 4, Slots 3 and 4).
Attach fibers from these cards to the BLSR trunk cards on the BLSR nodes. In
Step 2
3 connects to Node 7/Slot 4, and Slot 4 connects to Node 5/Slot 3.
From the node view, click the Provisioning > Sonet DCC tabs.
Step 3
Click Create.
Step 4
In the Create SDCC Terminations dialog box, click the slot and port that will carry the BLSR.
Step 5
Click OK.
Step 6
The selected slots/ports are displayed in the SDCC Terminations section.
Step 7
Put the ports that you will use for the BLSR in service:
Step 8
a.
b.
c.
Cisco ONS 15327 User Documentation, R3.3
5-32
Node 1
Slot 2
East
Slot 1
West
BLSR
Ring 1
Slot 2
Node 4
East
Slot 1
West
Node 3
Figure 5-26, you can route a circuit from Node 1 to Node 7. The circuit would normally
"Setting Up BLSRs" section on page
In the node view, double-click the BLSR trunk card.
Select the Provisioning > Line tabs. Under Status, choose In Service.
Click Apply.
Node 5
Slot 3 East
West Slot 4
Slot 4
East
BLSR
Ring 2
Slot 3
West
Slot 4 Slot 3
East West
Node 7
5-7.
Figure 5-26), install the OC-N cards that will serve
Chapter 5 SONET Topologies
Slot 3
West
Node 6
Slot 4
East
Figure 5-26, Node 4/Slot
June 2002