Common Spanning Tree - Avaya 2330 Manual
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Layer 2 fundamentals
Figure 8: Multiple MSTP regions
Common Spanning Tree
With Common Spanning Tree (CST) there is only one instance of spanning tree for all VLANs.
As shown in the following figure, the traffic for all VLANs (2–100) must travel from Switch B to
Switch A, while the path between Switch C and Switch A is unused.
Figure 9: Common Spanning Tree
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Configuration — Layer 2 Ethernet
Comments? infodev@avaya.com
July 2013
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