Users Guide

Table Of Contents
MLD timers.....................................................................................................................................................................576
Reducing Host Response Burstiness.....................................................................................................................577
Clearing MLD groups.....................................................................................................................................................577
Debugging MLD............................................................................................................................................................. 577
Explicit Tracking..............................................................................................................................................................577
Reducing Leave Latency............................................................................................................................................... 577
Displaying MLD groups table........................................................................................................................................ 578
Displaying MLD Interfaces............................................................................................................................................ 578
30 Multiple Spanning Tree Protocol (MSTP).................................................................................................579
Protocol Overview......................................................................................................................................................... 579
Spanning Tree Variations.............................................................................................................................................. 580
Implementation Information................................................................................................................................... 580
Congure Multiple Spanning Tree Protocol................................................................................................................580
Related Conguration Tasks....................................................................................................................................581
Enable Multiple Spanning Tree Globally....................................................................................................................... 581
Adding and Removing Interfaces..................................................................................................................................581
Creating Multiple Spanning Tree Instances................................................................................................................ 582
Inuencing MSTP Root Selection................................................................................................................................583
Interoperate with Non-Dell Bridges.............................................................................................................................584
Changing the Region Name or Revision..................................................................................................................... 584
Modifying Global Parameters.......................................................................................................................................584
Modifying the Interface Parameters........................................................................................................................... 586
Conguring an EdgePort.............................................................................................................................................. 587
Flush MAC Addresses after a Topology Change........................................................................................................587
MSTP Sample Congurations......................................................................................................................................588
Router 1 Running-CongurationRouter 2 Running-CongurationRouter 3 Running-
CongurationSFTOS Example Running-Conguration.......................................................................................588
Debugging and Verifying MSTP Congurations........................................................................................................ 592
31 Multicast Features....................................................................................................................................594
Enabling IP Multicast.....................................................................................................................................................594
Implementation Information..........................................................................................................................................594
Multicast Policies...........................................................................................................................................................595
IPv4 Multicast Policies............................................................................................................................................595
Understanding Multicast Traceroute (mtrace).......................................................................................................... 602
Important Points to Remember............................................................................................................................. 603
Printing Multicast Traceroute (mtrace) Paths........................................................................................................... 603
Supported Error Codes.................................................................................................................................................604
mtrace Scenarios...........................................................................................................................................................605
33 Multicast Listener Discovery Protocol.......................................................................................................611
MLD Version 1..................................................................................................................................................................611
MLD Querier Router....................................................................................................................................................... 611
Joining a Multicast Group..............................................................................................................................................612
Leaving a Multicast Group.............................................................................................................................................612
20
Contents