Users Guide

Implementation Information....................................................................................................................................... 435
Configure Multiple Spanning Tree Protocol...................................................................................................................435
Related Configuration Tasks......................................................................................................................................435
Enable Multiple Spanning Tree Globally..........................................................................................................................436
Adding and Removing Interfaces.................................................................................................................................... 436
Creating Multiple Spanning Tree Instances................................................................................................................... 436
Influencing MSTP Root Selection................................................................................................................................... 437
Interoperate with Non-Dell Bridges................................................................................................................................ 438
Changing the Region Name or Revision.........................................................................................................................438
Modifying Global Parameters...........................................................................................................................................438
Modifying the Interface Parameters...............................................................................................................................439
Configuring an EdgePort..................................................................................................................................................440
Flush MAC Addresses after a Topology Change........................................................................................................... 441
MSTP Sample Configurations.......................................................................................................................................... 441
Debugging and Verifying MSTP Configurations............................................................................................................444
Chapter 31: Multicast Features.....................................................................................................446
Enabling IP Multicast........................................................................................................................................................ 446
Implementation Information.............................................................................................................................................446
Multicast Policies...............................................................................................................................................................447
IPv4 Multicast Policies................................................................................................................................................ 447
Chapter 32: Object Tracking........................................................................................................ 453
Object Tracking Overview............................................................................................................................................... 453
Track Layer 2 Interfaces.............................................................................................................................................454
Track Layer 3 Interfaces.............................................................................................................................................454
Track IPv4 and IPv6 Routes...................................................................................................................................... 454
Set Tracking Delays.................................................................................................................................................... 455
VRRP Object Tracking................................................................................................................................................456
Object Tracking Configuration........................................................................................................................................ 456
Tracking a Layer 2 Interface...................................................................................................................................... 456
Tracking a Layer 3 Interface...................................................................................................................................... 457
Track an IPv4/IPv6 Route......................................................................................................................................... 458
Displaying Tracked Objects...............................................................................................................................................461
Chapter 33: Open Shortest Path First (OSPFv2 and OSPFv3).........................................................463
Protocol Overview............................................................................................................................................................ 463
Autonomous System (AS) Areas...............................................................................................................................463
Area Types................................................................................................................................................................... 464
Networks and Neighbors............................................................................................................................................465
Router Types............................................................................................................................................................... 465
Designated and Backup Designated Routers.......................................................................................................... 466
Link-State Advertisements (LSAs)...........................................................................................................................466
Router Priority and Cost.............................................................................................................................................467
OSPF with Dell Networking OS.......................................................................................................................................468
Graceful Restart.......................................................................................................................................................... 468
Fast Convergence (OSPFv2, IPv4 Only)................................................................................................................. 469
Multi-Process OSPFv2 with VRF..............................................................................................................................469
OSPF ACK Packing..................................................................................................................................................... 470
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Contents