Nortel Networks NTRN10AN, 3500 manual 24Operation, administration, and maintenance OAM features

Models: 3500 NTRN10AN

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2-24Operation, administration, and maintenance (OAM) features

Figure 2-11

BLSR ring switch example

EX1234p

10

'Bridged and

Switching

'Bridged and

Switched' state

nodes

Switched' state

 

W

 

4

P

3

 

P

 

 

W

 

W

P

W

 

Pass-through

 

nodes

P W

 

 

W

1

P

P

 

 

W

P

P

2

W

'Pass-through'

 

'Pass-through'

state

Long path

state

 

SD/4/3/L/bridged and switched

 

Legend

P

W

Add/drop multiplexer

One fiber divided into working and protection bandwidth

W= Working traffic P = Protection traffic

OPTera Metro 3500 Multiservice Platform NTRN10AN Rel 12.1 Standard Iss 1 Apr 2004

Page 62
Image 62
Nortel Networks NTRN10AN, 3500 manual 24Operation, administration, and maintenance OAM features