Concept Guide

Implementation Information................................................................................................................................... 588
Congure Multiple Spanning Tree Protocol................................................................................................................588
Related Conguration Tasks...................................................................................................................................589
Enable Multiple Spanning Tree Globally...................................................................................................................... 589
Adding and Removing Interfaces.................................................................................................................................589
Creating Multiple Spanning Tree Instances................................................................................................................ 590
Inuencing MSTP Root Selection................................................................................................................................ 591
Interoperate with Non-Dell Bridges.............................................................................................................................592
Changing the Region Name or Revision..................................................................................................................... 592
Modifying Global Parameters....................................................................................................................................... 592
Modifying the Interface Parameters........................................................................................................................... 594
Setting STP path cost as constant.............................................................................................................................595
Conguring an EdgePort.............................................................................................................................................. 595
Flush MAC Addresses after a Topology Change....................................................................................................... 596
MSTP Sample Congurations......................................................................................................................................596
Router 1 Running-CongurationRouter 2 Running-CongurationRouter 3 Running-
CongurationSFTOS Example Running-Conguration.......................................................................................596
Debugging and Verifying MSTP Congurations........................................................................................................ 600
31 Multicast Features....................................................................................................................................603
Enabling IP Multicast.....................................................................................................................................................603
Implementation Information..........................................................................................................................................603
Multicast Policies...........................................................................................................................................................604
IPv4 Multicast Policies............................................................................................................................................604
Understanding Multicast Traceroute (mtrace)............................................................................................................ 611
Important Points to Remember.............................................................................................................................. 612
Printing Multicast Traceroute (mtrace) Paths............................................................................................................ 612
Supported Error Codes..................................................................................................................................................613
mtrace Scenarios............................................................................................................................................................614
33 Multicast Listener Discovery Protocol..................................................................................................... 620
MLD Version 1................................................................................................................................................................ 620
MLD Querier Router......................................................................................................................................................620
Joining a Multicast Group..............................................................................................................................................621
Leaving a Multicast Group.............................................................................................................................................621
MLD version 2.................................................................................................................................................................621
MLD timers.....................................................................................................................................................................623
Reducing Host Response Burstiness.................................................................................................................... 624
Clearing MLD groups.....................................................................................................................................................624
Debugging MLD............................................................................................................................................................. 624
Explicit Tracking............................................................................................................................................................. 624
Reducing Leave Latency...............................................................................................................................................624
Displaying MLD groups table........................................................................................................................................625
Displaying MLD Interfaces............................................................................................................................................625
MLD Snooping............................................................................................................................................................... 625
Enable MLD Snooping.............................................................................................................................................625
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