Setup Guide

Protocol Overview.........................................................................................................................................................595
Spanning Tree Variations.............................................................................................................................................. 596
Implementation Information................................................................................................................................... 596
Congure Multiple Spanning Tree Protocol................................................................................................................596
Related Conguration Tasks................................................................................................................................... 597
Enable Multiple Spanning Tree Globally.......................................................................................................................597
Adding and Removing Interfaces................................................................................................................................. 597
Creating Multiple Spanning Tree Instances................................................................................................................ 598
Inuencing MSTP Root Selection................................................................................................................................599
Interoperate with Non-Dell Bridges.............................................................................................................................600
Changing the Region Name or Revision.....................................................................................................................600
Modifying Global Parameters.......................................................................................................................................600
Modifying the Interface Parameters........................................................................................................................... 602
Setting STP path cost as constant............................................................................................................................. 603
Conguring an EdgePort.............................................................................................................................................. 603
Flush MAC Addresses after a Topology Change....................................................................................................... 604
MSTP Sample Congurations......................................................................................................................................604
Router 1 Running-CongurationRouter 2 Running-CongurationRouter 3 Running-
CongurationSFTOS Example Running-Conguration
.......................................................................................604
Debugging and Verifying MSTP Congurations........................................................................................................ 608
31 Multicast Features.....................................................................................................................................611
Enabling IP Multicast...................................................................................................................................................... 611
Implementation Information........................................................................................................................................... 611
Multicast Policies............................................................................................................................................................612
IPv4 Multicast Policies.............................................................................................................................................612
Understanding Multicast Traceroute (mtrace)........................................................................................................... 619
Important Points to Remember............................................................................................................................. 620
Printing Multicast Traceroute (mtrace) Paths........................................................................................................... 620
Supported Error Codes..................................................................................................................................................621
mtrace Scenarios...........................................................................................................................................................622
33 Multicast Listener Discovery Protocol......................................................................................................628
MLD Version 1................................................................................................................................................................ 628
MLD Querier Router......................................................................................................................................................628
Joining a Multicast Group.............................................................................................................................................629
Leaving a Multicast Group............................................................................................................................................629
MLD version 2................................................................................................................................................................629
MLD timers......................................................................................................................................................................631
Reducing Host Response Burstiness.................................................................................................................... 632
Clearing MLD groups.....................................................................................................................................................632
Debugging MLD.............................................................................................................................................................632
Explicit Tracking............................................................................................................................................................. 632
Reducing Leave Latency...............................................................................................................................................632
Displaying MLD groups table........................................................................................................................................633
Displaying MLD Interfaces............................................................................................................................................633
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