Setup Guide

Implementation Information....................................................................................................................................538
Congure Multiple Spanning Tree Protocol................................................................................................................538
Related Conguration Tasks...................................................................................................................................539
Enable Multiple Spanning Tree Globally...................................................................................................................... 539
Adding and Removing Interfaces.................................................................................................................................539
Creating Multiple Spanning Tree Instances................................................................................................................ 540
Inuencing MSTP Root Selection................................................................................................................................540
Interoperate with Non-Dell Bridges..............................................................................................................................541
Changing the Region Name or Revision......................................................................................................................541
Modifying Global Parameters....................................................................................................................................... 542
Modifying the Interface Parameters............................................................................................................................543
Setting STP path cost as constant............................................................................................................................. 544
Conguring an EdgePort.............................................................................................................................................. 544
Flush MAC Addresses after a Topology Change....................................................................................................... 545
MSTP Sample Congurations......................................................................................................................................545
Router 1 Running-CongurationRouter 2 Running-CongurationRouter 3 Running-
CongurationSFTOS Example Running-Conguration.......................................................................................545
Debugging and Verifying MSTP Congurations........................................................................................................ 547
31 Multicast Features....................................................................................................................................548
Enabling IP Multicast.....................................................................................................................................................548
Implementation Information..........................................................................................................................................548
Multicast Policies...........................................................................................................................................................549
IPv4 Multicast Policies............................................................................................................................................549
Understanding Multicast Traceroute (mtrace).......................................................................................................... 556
Important Points to Remember..............................................................................................................................557
Printing Multicast Traceroute (mtrace) Paths........................................................................................................... 557
Supported Error Codes.................................................................................................................................................558
mtrace Scenarios...........................................................................................................................................................559
32 Multicast Listener Discovery Protocol..................................................................................................... 565
MLD Version 1................................................................................................................................................................ 565
MLD Querier Router......................................................................................................................................................565
Joining a Multicast Group.............................................................................................................................................566
Leaving a Multicast Group............................................................................................................................................566
MLD version 2................................................................................................................................................................566
MLD timers.....................................................................................................................................................................568
Reducing Host Response Burstiness.................................................................................................................... 569
Clearing MLD groups.................................................................................................................................................... 569
Debugging MLD.............................................................................................................................................................569
Explicit Tracking.............................................................................................................................................................569
Reducing Leave Latency...............................................................................................................................................569
Displaying MLD groups table........................................................................................................................................ 570
Displaying MLD Interfaces............................................................................................................................................ 570
MLD Snooping................................................................................................................................................................570
Enable MLD Snooping.............................................................................................................................................570
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