Concept Guide

Reducing Source-Active Message Flooding........................................................................................................ 580
Specifying the RP Address Used in SA Messages..............................................................................................580
MSDP Sample Congurations......................................................................................................................................582
32 Multiple Spanning Tree Protocol (MSTP)................................................................................................ 585
Protocol Overview.........................................................................................................................................................585
Spanning Tree Variations.............................................................................................................................................. 586
Implementation Information................................................................................................................................... 586
Congure Multiple Spanning Tree Protocol................................................................................................................586
Related Conguration Tasks................................................................................................................................... 587
Enable Multiple Spanning Tree Globally.......................................................................................................................587
Adding and Removing Interfaces................................................................................................................................. 587
Creating Multiple Spanning Tree Instances................................................................................................................ 588
Inuencing MSTP Root Selection................................................................................................................................589
Interoperate with Non-Dell Bridges.............................................................................................................................589
Changing the Region Name or Revision.....................................................................................................................590
Modifying Global Parameters.......................................................................................................................................590
Modifying the Interface Parameters............................................................................................................................ 591
Conguring an EdgePort.............................................................................................................................................. 592
Flush MAC Addresses after a Topology Change....................................................................................................... 593
MSTP Sample Congurations......................................................................................................................................593
Router 1 Running-CongurationRouter 2 Running-CongurationRouter 3 Running-
CongurationSFTOS Example Running-Conguration.......................................................................................594
Debugging and Verifying MSTP Congurations.........................................................................................................597
33 Multicast Features...................................................................................................................................599
Enabling IP Multicast.....................................................................................................................................................599
Implementation Information......................................................................................................................................... 599
Multicast Policies...........................................................................................................................................................600
IPv4 Multicast Policies............................................................................................................................................600
Understanding Multicast Traceroute (mtrace)...........................................................................................................607
Important Points to Remember............................................................................................................................. 608
Printing Multicast Traceroute (mtrace) Paths........................................................................................................... 608
Supported Error Codes.................................................................................................................................................609
mtrace Scenarios............................................................................................................................................................610
34 Object Tracking........................................................................................................................................ 616
Object Tracking Overview............................................................................................................................................. 616
Track Layer 2 Interfaces...........................................................................................................................................617
Track Layer 3 Interfaces...........................................................................................................................................617
Track IPv4 and IPv6 Routes....................................................................................................................................618
Set Tracking Delays..................................................................................................................................................619
VRRP Object Tracking............................................................................................................................................. 619
Object Tracking Conguration...................................................................................................................................... 619
Tracking a Layer 2 Interface....................................................................................................................................619
Tracking a Layer 3 Interface................................................................................................................................... 620
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