Cisco ONS 15454 - Two-Fiber BLSR to Path Protection Connection Example; Figure 2-35 Bridge from 12;3;2 to Ring; Figure 2-36 Two-Fiber BLSR to Path Protection

2-35
Cisco ONS SONET TL1 Command Guide, R6.0
Chapter 2 Procedures and Provisioning
2.4.6 Two-Fiber BLSR to Path Protection Connection Example
Use the command ENT-CRS-STS1:CISCO:STS-5-1&STS-6-1,STS12-26:CTAG2::2WAY;
to create a selector between 5/1/1 and 6/1/1 which connects to 12/3/2 on Ring 2, as shown in Figure 2-34.
Figure 2-34 Selector Between 5/1/1 and 6/1/1
The command also creates a bridge from 12/3/2 to Ring 1 (5/1/1 and 6/1/1), as shown in Figure 2-35.
Figure 2-35 Bridge from 12/3/2 to Ring
In this configuration a two-fiber BLSR switch can automatically reconnect the selector output to the
protection path on the east port (12/3/2 assuming OC-12) if necessary.
2.4.6 Two-Fiber BLSR to Path Protection Connection Example
Ring 1 = Two-fiber BLSR
Ring 2 = Path Protection
This example, illustrated in Figure 2-36, uses a path protection end-point with a drop on a two-fiber
BLSR and uses the east span of the two-fiber BLSR (Ring 1) for the active path of the circuit. For STS
addressing, the path protection is an OC-3 (for example, STS-13-8).
Figure 2-36 Two-Fiber BLSR to Path Protection
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5/1/1
Rx
6/1/1
Rx
Selector
12/3/2
Tx
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5/1/1
Rx
6/1/1
Rx
12/3/2
Tx
Bridge
Node Cisco
2F BLSR RING 1
Path Protection
configuration 2
West5/1/1 East 6/1/1
West12/3/2 East 13/3/2
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