Setup Guide

34 Multiple Spanning Tree Protocol (MSTP)................................................................................................. 631
Protocol Overview..........................................................................................................................................................631
Spanning Tree Variations...............................................................................................................................................632
Implementation Information....................................................................................................................................632
Congure Multiple Spanning Tree Protocol................................................................................................................632
Related Conguration Tasks...................................................................................................................................633
Enable Multiple Spanning Tree Globally...................................................................................................................... 633
Adding and Removing Interfaces.................................................................................................................................633
Creating Multiple Spanning Tree Instances................................................................................................................ 634
Inuencing MSTP Root Selection................................................................................................................................635
Interoperate with Non-Dell Bridges.............................................................................................................................635
Changing the Region Name or Revision..................................................................................................................... 636
Modifying Global Parameters.......................................................................................................................................636
Modifying the Interface Parameters............................................................................................................................637
Setting STP path cost as constant............................................................................................................................. 638
Conguring an EdgePort.............................................................................................................................................. 639
Flush MAC Addresses after a Topology Change....................................................................................................... 639
MSTP Sample Congurations......................................................................................................................................640
Router 1 Running-CongurationRouter 2 Running-CongurationRouter 3 Running-
CongurationSFTOS Example Running-Conguration.......................................................................................640
Debugging and Verifying MSTP Congurations........................................................................................................ 643
35 Multicast Features...................................................................................................................................645
Enabling IP Multicast.....................................................................................................................................................645
Implementation Information......................................................................................................................................... 645
Multicast Policies...........................................................................................................................................................646
IPv4 Multicast Policies............................................................................................................................................646
Understanding Multicast Traceroute (mtrace).......................................................................................................... 653
Important Points to Remember............................................................................................................................. 654
Printing Multicast Traceroute (mtrace) Paths........................................................................................................... 654
Supported Error Codes.................................................................................................................................................655
mtrace Scenarios...........................................................................................................................................................656
36 Multicast Listener Discovery Protocol..................................................................................................... 662
MLD Version 1................................................................................................................................................................ 662
MLD Querier Router......................................................................................................................................................662
Joining a Multicast Group.............................................................................................................................................663
Leaving a Multicast Group............................................................................................................................................663
MLD version 2................................................................................................................................................................663
MLD timers.....................................................................................................................................................................665
Reducing Host Response Burstiness.................................................................................................................... 666
Clearing MLD groups.................................................................................................................................................... 666
Debugging MLD.............................................................................................................................................................666
Explicit Tracking............................................................................................................................................................. 666
Reducing Leave Latency...............................................................................................................................................666
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