Users Guide

Adding and Removing Interfaces.................................................................................................................................535
Creating Multiple Spanning Tree Instances................................................................................................................ 536
Inuencing MSTP Root Selection................................................................................................................................537
Interoperate with Non-Dell Bridges............................................................................................................................. 537
Changing the Region Name or Revision..................................................................................................................... 538
Modifying Global Parameters.......................................................................................................................................538
Modifying the Interface Parameters........................................................................................................................... 539
Conguring an EdgePort.............................................................................................................................................. 540
Flush MAC Addresses after a Topology Change........................................................................................................ 541
MSTP Sample Congurations.......................................................................................................................................541
Router 1 Running-CongurationRouter 2 Running-CongurationRouter 3 Running-
CongurationSFTOS Example Running-Conguration.......................................................................................542
Debugging and Verifying MSTP Congurations........................................................................................................ 545
32 Multicast Features................................................................................................................................... 547
Enabling IP Multicast.....................................................................................................................................................547
Implementation Information..........................................................................................................................................547
Multicast Policies...........................................................................................................................................................548
IPv4 Multicast Policies............................................................................................................................................548
Understanding Multicast Traceroute (mtrace).................................................................................................... 555
Printing Multicast Traceroute (mtrace) Paths..................................................................................................... 556
Supported Error Codes........................................................................................................................................... 557
mtrace Scenarios.....................................................................................................................................................558
33 Multicast Listener Discovery Protocol..................................................................................................... 564
MLD Version 1................................................................................................................................................................ 564
MLD Querier Router......................................................................................................................................................564
Joining a Multicast Group.............................................................................................................................................565
Leaving a Multicast Group............................................................................................................................................565
MLD version 2................................................................................................................................................................565
MLD timers.....................................................................................................................................................................567
Reducing Host Response Burstiness.................................................................................................................... 568
Clearing MLD groups.................................................................................................................................................... 568
Debugging MLD.............................................................................................................................................................568
Explicit Tracking............................................................................................................................................................. 568
Reducing Leave Latency...............................................................................................................................................568
Displaying MLD groups table........................................................................................................................................569
Displaying MLD Interfaces............................................................................................................................................569
MLD Snooping............................................................................................................................................................... 569
Enable MLD Snooping............................................................................................................................................ 569
Disable MLD Snooping............................................................................................................................................ 570
Congure the switch as a querier..........................................................................................................................570
Specify port as connected to multicast router.................................................................................................... 570
Enable Snooping Explicit Tracking..........................................................................................................................571
Display the MLD Snooping Table............................................................................................................................ 571
Contents
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