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Managing rings with two breaks – Allied Telesis AlliedWare Plus Operating System Version 5.4.4C (x310-26FT,x310-26FP,x310-50FT,x310-50FP) User Manual

Page 1488

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EPSR Introduction and Configuration

Software Reference for x310 Series Switches

57.6

AlliedWare Plus

TM

Operating System - Version 5.4.4C

C613-50046-01 REV A

Managing Rings with Two Breaks

To restore a link with two breaks you need to run the EPSR Enhanced Recovery feature.
Consider the network shown below:

Figure 57-3: EPSR Ring with Two Breaks

In this situation the ring will attempt to recover as previously described in

“Fault

Recovery” on page 57.4

. This will result in the split-ring operation shown in

Figure 57-4

on page 57.7

.

Master

Node

Transit

Node

A

Transit

Node

E

Transit

Node

B

Transit

Node

C

Master Node Hello Message

Control VLAN

Transit

Node

D

EPSR Plus.eps

(1)

P

S