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When is the use of Multiple Spanning Tree appropriate?

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TitleWhen is the use of Multiple Spanning Tree appropriate?
Question
When is the use of Multiple Spanning Tree appropriate?
Environment
  • SecureStack
  • N-Series
  • S-Series
  • K-Series
  • All firmware versions
Answer
  • In networks designed with many redundant data paths that are currently sitting idle in a blocking state.  Multiple Spanning Tree can be used in these instances to utilize these idle links.  You can have them blocked for some VLANs and forwarding for others
  • If a network does not have many redundant paths by design, then configuring Multiple Spanning Tree does not really buy you that much.
  • By default all EOS-based switches run Multiple Spanning Tree (802.1s) with all VLANs mapped to SID 0, this is functionally the same as Rapid Spanning Tree (802.1w)
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