Concept Guide

Enable Multiple Spanning Tree Globally...................................................................................................................... 605
Adding and Removing Interfaces.................................................................................................................................605
Creating Multiple Spanning Tree Instances................................................................................................................ 606
Inuencing MSTP Root Selection................................................................................................................................607
Interoperate with Non-Dell Bridges............................................................................................................................. 607
Changing the Region Name or Revision..................................................................................................................... 608
Modifying Global Parameters.......................................................................................................................................608
Modifying the Interface Parameters........................................................................................................................... 609
Setting STP path cost as constant..............................................................................................................................610
Conguring an EdgePort................................................................................................................................................611
Flush MAC Addresses after a Topology Change.........................................................................................................611
MSTP Sample Congurations.......................................................................................................................................612
Router 1 Running-CongurationRouter 2 Running-CongurationRouter 3 Running-
CongurationSFTOS Example Running-Conguration........................................................................................612
Debugging and Verifying MSTP Congurations.........................................................................................................615
33 Multicast Features....................................................................................................................................617
Enabling IP Multicast......................................................................................................................................................617
Implementation Information...........................................................................................................................................617
Multicast Policies............................................................................................................................................................618
IPv4 Multicast Policies.............................................................................................................................................618
Understanding Multicast Traceroute (mtrace).......................................................................................................... 625
Important Points to Remember............................................................................................................................. 626
Printing Multicast Traceroute (mtrace) Paths........................................................................................................... 626
Supported Error Codes................................................................................................................................................. 627
mtrace Scenarios...........................................................................................................................................................628
34 Object Tracking........................................................................................................................................634
Object Tracking Overview............................................................................................................................................ 634
Track Layer 2 Interfaces..........................................................................................................................................635
Track Layer 3 Interfaces..........................................................................................................................................635
Track IPv4 and IPv6 Routes................................................................................................................................... 636
Set Tracking Delays..................................................................................................................................................637
VRRP Object Tracking.............................................................................................................................................637
Object Tracking Conguration......................................................................................................................................637
Tracking a Layer 2 Interface....................................................................................................................................637
Tracking a Layer 3 Interface................................................................................................................................... 638
Track an IPv4/IPv6 Route...................................................................................................................................... 640
Displaying Tracked Objects...........................................................................................................................................644
35 Open Shortest Path First (OSPFv2 and OSPFv3)....................................................................................646
Protocol Overview.........................................................................................................................................................646
Autonomous System (AS) Areas........................................................................................................................... 646
Area Types................................................................................................................................................................ 647
Networks and Neighbors........................................................................................................................................648
Router Types............................................................................................................................................................ 648
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