Operation, administration, and maintenance (OAM) features 2-29

Figure 2-14

STS paths and squelch map for a four-node 2-Fiber BLSR ring

F2247

Node A

(path a) (path b) (path c)

STS #3

Node B

(path b)

STS #1 STS #2

STS #2

STS #3

Line

(path c)

(path d)

Node D

STS #2 STS #1

Line

(path a) (path d)

Node C

BLSR configurations

The configuration of the BLSR ring is recorded in a BLSR configuration, which is created on the NPx and then propagated to all the SPx circuit packs in the BLSR ring.

BLSR configuration attributes

A BLSR configuration contains the following information:

Ring name

Optical interfaces involved in the ring (for each node in the ring)

The associated automatic protection switching (APS) IDs of the involved optical interfaces (for each node in the ring)

The adjacent nodes’ APS IDs and TIDs (for each node in the ring) Note 1: The allowable string characters are "0-9", "A-Z", and "-". Note 2: The allowable range for an APS ID is between 0 and 15.

Planning and Ordering Guide—Part 1 of 2 NTRN10AN Rel 12.1 Standard Iss 1 Apr 2004

Page 67
Image 67
Nortel Networks 3500, NTRN10AN manual Blsr configurations, STS paths and squelch map for a four-node 2-Fiber Blsr ring