Concept Guide

34 Multiple Spanning Tree Protocol (MSTP)................................................................................................ 630
Protocol Overview.........................................................................................................................................................630
Spanning Tree Variations............................................................................................................................................... 631
Implementation Information.................................................................................................................................... 631
Congure Multiple Spanning Tree Protocol.................................................................................................................631
Related Conguration Tasks...................................................................................................................................632
Enable Multiple Spanning Tree Globally...................................................................................................................... 632
Adding and Removing Interfaces.................................................................................................................................632
Creating Multiple Spanning Tree Instances................................................................................................................ 633
Inuencing MSTP Root Selection................................................................................................................................634
Interoperate with Non-Dell Bridges............................................................................................................................. 634
Changing the Region Name or Revision..................................................................................................................... 635
Modifying Global Parameters.......................................................................................................................................635
Modifying the Interface Parameters........................................................................................................................... 636
Setting STP path cost as constant............................................................................................................................. 637
Conguring an EdgePort.............................................................................................................................................. 638
Flush MAC Addresses after a Topology Change....................................................................................................... 638
MSTP Sample Congurations......................................................................................................................................639
Router 1 Running-CongurationRouter 2 Running-CongurationRouter 3 Running-
CongurationSFTOS Example Running-Conguration.......................................................................................639
Debugging and Verifying MSTP Congurations........................................................................................................ 642
35 Multicast Features...................................................................................................................................644
Enabling IP Multicast.....................................................................................................................................................644
Implementation Information..........................................................................................................................................644
Multicast Policies...........................................................................................................................................................645
IPv4 Multicast Policies............................................................................................................................................645
Understanding Multicast Traceroute (mtrace).......................................................................................................... 652
Important Points to Remember............................................................................................................................. 653
Printing Multicast Traceroute (mtrace) Paths........................................................................................................... 653
Supported Error Codes.................................................................................................................................................654
mtrace Scenarios...........................................................................................................................................................655
36 Multicast Listener Discovery Protocol...................................................................................................... 661
MLD Version 1................................................................................................................................................................. 661
MLD Querier Router.......................................................................................................................................................661
Joining a Multicast Group.............................................................................................................................................662
Leaving a Multicast Group............................................................................................................................................662
MLD version 2................................................................................................................................................................662
MLD timers.....................................................................................................................................................................664
Reducing Host Response Burstiness.................................................................................................................... 665
Clearing MLD groups.................................................................................................................................................... 665
Debugging MLD.............................................................................................................................................................665
Explicit Tracking.............................................................................................................................................................665
Reducing Leave Latency...............................................................................................................................................665
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