Avaya Configuring Bridging Services Manual de usuario Pagina 36

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Configuring Bridging Services
1-14 117351-A Rev. A
If, in the network shown in Figure 1-8 on page 1-9, a majority of traffic originates
on LAN A and is destined for LAN D, it is not practical to set the spanning tree
parameters as shown in F
igure 1-12. This figure illustrates an inefficient spanning
tree topology for this network because the traffic from LAN A must traverse
bridge 1, LAN B, and bridge 2 to get to LAN D. LAN B is then congested with
unnecessary traffic.
Figure 1-12. Inefficient Spanning Tree Topology
LAN D
LAN B LAN C
BR 3
BR 1
BR 4
BR 2
IF 2
IF 1
IF 5 IF 9
IF 4
IF 3
LAN A
IF 8
All path costs are equal.
----And---
-
BR 4 = priority 1
BR 3 = priority 2
BR 2 = priority 3
BR 1 = priority 4
Bridge 2/Interface 6 is blocked.
Bridge 3/Interface 7 is blocked.
Inefficient spanning
tree topology is created.
Interface (IF) number
denotes its priority.
Given:
Then:
Result:
BRG009A
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