Administrator Guide

Related Conguration Tasks...................................................................................................................................632
Enable Multiple Spanning Tree Globally...................................................................................................................... 633
Adding and Removing Interfaces.................................................................................................................................633
Creating Multiple Spanning Tree Instances................................................................................................................ 633
Inuencing MSTP Root Selection................................................................................................................................634
Interoperate with Non-Dell Bridges.............................................................................................................................635
Changing the Region Name or Revision..................................................................................................................... 635
Modifying Global Parameters....................................................................................................................................... 636
Modifying the Interface Parameters............................................................................................................................637
Conguring an EdgePort.............................................................................................................................................. 638
Flush MAC Addresses after a Topology Change....................................................................................................... 639
MSTP Sample Congurations......................................................................................................................................639
Router 1 Running-CongurationRouter 2 Running-CongurationRouter 3 Running-
CongurationExample Running-Conguration.....................................................................................................639
Debugging and Verifying MSTP Congurations........................................................................................................ 642
33 Multicast Features................................................................................................................................... 644
Enabling IP Multicast.....................................................................................................................................................644
Implementation Information..........................................................................................................................................644
First Packet Forwarding for Lossless Multicast.........................................................................................................645
Multicast Policies...........................................................................................................................................................645
IPv4 Multicast Policies............................................................................................................................................645
Understanding Multicast Traceroute (mtrace).......................................................................................................... 652
Important Points to Remember............................................................................................................................. 653
Printing Multicast Traceroute (mtrace) Paths........................................................................................................... 653
Supported Error Codes.................................................................................................................................................654
mtrace Scenarios...........................................................................................................................................................655
34 Multicast Listener Discovery Protocol...................................................................................................... 661
MLD Version 1.................................................................................................................................................................661
MLD Querier Router.......................................................................................................................................................661
Joining a Multicast Group.............................................................................................................................................662
Leaving a Multicast Group............................................................................................................................................662
MLD version 2................................................................................................................................................................662
MLD timers.....................................................................................................................................................................664
Reducing Host Response Burstiness.................................................................................................................... 665
Conguring MLD Version............................................................................................................................................. 665
Clearing MLD groups.................................................................................................................................................... 665
Debugging MLD.............................................................................................................................................................665
Explicit Tracking.............................................................................................................................................................665
Reducing Leave Latency...............................................................................................................................................666
Displaying MLD groups table........................................................................................................................................666
Displaying MLD Interfaces............................................................................................................................................666
MLD Snooping............................................................................................................................................................... 666
Enable MLD Snooping.............................................................................................................................................667
Disable MLD Snooping............................................................................................................................................ 667
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