Concept Guide

Creating Multiple Spanning Tree Instances................................................................................................................ 604
Inuencing MSTP Root Selection............................................................................................................................... 605
Interoperate with Non-Dell Bridges.............................................................................................................................605
Changing the Region Name or Revision.....................................................................................................................606
Modifying Global Parameters.......................................................................................................................................606
Modifying the Interface Parameters............................................................................................................................607
Setting STP path cost as constant.............................................................................................................................608
Conguring an EdgePort.............................................................................................................................................. 609
Flush MAC Addresses after a Topology Change....................................................................................................... 609
MSTP Sample Congurations.......................................................................................................................................610
Router 1 Running-CongurationRouter 2 Running-CongurationRouter 3 Running-
CongurationSFTOS Example Running-Conguration........................................................................................610
Debugging and Verifying MSTP Congurations......................................................................................................... 613
33 Multicast Features................................................................................................................................... 615
Enabling IP Multicast..................................................................................................................................................... 615
Implementation Information.......................................................................................................................................... 615
Multicast Policies............................................................................................................................................................616
IPv4 Multicast Policies.............................................................................................................................................616
Understanding Multicast Traceroute (mtrace)...........................................................................................................623
Important Points to Remember..............................................................................................................................624
Printing Multicast Traceroute (mtrace) Paths........................................................................................................... 624
Supported Error Codes.................................................................................................................................................625
mtrace Scenarios...........................................................................................................................................................626
34 Object Tracking........................................................................................................................................632
Object Tracking Overview............................................................................................................................................ 632
Track Layer 2 Interfaces..........................................................................................................................................633
Track Layer 3 Interfaces..........................................................................................................................................633
Track IPv4 and IPv6 Routes................................................................................................................................... 634
Set Tracking Delays................................................................................................................................................. 635
VRRP Object Tracking............................................................................................................................................ 635
Object Tracking Conguration..................................................................................................................................... 635
Tracking a Layer 2 Interface................................................................................................................................... 635
Tracking a Layer 3 Interface................................................................................................................................... 636
Track an IPv4/IPv6 Route...................................................................................................................................... 638
Displaying Tracked Objects...........................................................................................................................................642
35 Open Shortest Path First (OSPFv2 and OSPFv3)....................................................................................644
Protocol Overview.........................................................................................................................................................644
Autonomous System (AS) Areas........................................................................................................................... 644
Area Types................................................................................................................................................................ 645
Networks and Neighbors........................................................................................................................................646
Router Types............................................................................................................................................................ 646
Designated and Backup Designated Routers....................................................................................................... 648
Link-State Advertisements (LSAs)........................................................................................................................648
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