Users Guide

MSTP Sample Congurations...................................................................................................................................... 572
Router 1 Running-CongurationRouter 2 Running-CongurationRouter 3 Running-
CongurationSFTOS Example Running-Conguration....................................................................................... 573
Debugging and Verifying MSTP Congurations........................................................................................................ 576
33 Multicast Features................................................................................................................................... 578
Enabling IP Multicast.....................................................................................................................................................578
Implementation Information..........................................................................................................................................578
Multicast Policies........................................................................................................................................................... 579
IPv4 Multicast Policies............................................................................................................................................ 579
Understanding Multicast Traceroute (mtrace).......................................................................................................... 586
Important Points to Remember..............................................................................................................................587
Printing Multicast Traceroute (mtrace) Paths............................................................................................................587
Supported Error Codes.................................................................................................................................................588
mtrace Scenarios...........................................................................................................................................................589
34 Object Tracking....................................................................................................................................... 595
Object Tracking Overview............................................................................................................................................ 595
Track Layer 2 Interfaces......................................................................................................................................... 596
Track Layer 3 Interfaces......................................................................................................................................... 596
Track IPv4 and IPv6 Routes................................................................................................................................... 597
Set Tracking Delays................................................................................................................................................. 598
VRRP Object Tracking............................................................................................................................................ 598
Object Tracking Conguration..................................................................................................................................... 598
Tracking a Layer 2 Interface................................................................................................................................... 598
Tracking a Layer 3 Interface................................................................................................................................... 599
Track an IPv4/IPv6 Route.......................................................................................................................................601
Displaying Tracked Objects...........................................................................................................................................604
35 Open Shortest Path First (OSPFv2 and OSPFv3)................................................................................... 606
Protocol Overview.........................................................................................................................................................606
Autonomous System (AS) Areas........................................................................................................................... 606
Area Types................................................................................................................................................................ 607
Networks and Neighbors........................................................................................................................................608
Router Types............................................................................................................................................................ 608
Designated and Backup Designated Routers........................................................................................................610
Link-State Advertisements (LSAs).........................................................................................................................610
Router Priority and Cost.......................................................................................................................................... 611
OSPF with Dell Networking OS....................................................................................................................................612
Graceful Restart....................................................................................................................................................... 613
Fast Convergence (OSPFv2, IPv4 Only)...............................................................................................................614
Multi-Process OSPFv2 with VRF...........................................................................................................................614
RFC-2328 Compliant OSPF Flooding.................................................................................................................... 614
OSPF ACK Packing..................................................................................................................................................615
Setting OSPF Adjacency with Cisco Routers.......................................................................................................615
Conguration Information..............................................................................................................................................616
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Contents