
Using Transparent Bridge Services
117351-A Rev. A 1-13
Figure 1-11 shows the resulting logical topology, which provides a loop-free
topology with only a single path between any two hosts.
Figure 1-11. Spanning Tree (Loop-Free) Logical Topology
It is very important to configure the spanning tree parameters correctly. Consider
the typical flow of traffic so that the logical topology that results from the
spanning tree algorithm is appropriate for the network.
LAN C
LAN D
LAN B LAN A
BR 3
BR 2
BR 4BR 1
IF 1
IF 2 IF 3
IF 5
IF 6
IF 7
IF 4
All path costs are equal.
----And----
BR 2 = priority 1
BR 3 = priority 2
BR 4 = priority 3
BR 1 = priority 4
Then:
Bridge 1/Interface 8 is blocked.
Bridge 4/Interface 9 is blocked.
Loop-free topology
is created.
Result:
Interface (IF) number
denotes its priority.
Given:
BRG0008A
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