Users Guide

MSTP Sample Congurations......................................................................................................................................569
Router 1 Running-CongurationRouter 2 Running-CongurationRouter 3 Running-
CongurationSFTOS Example Running-Conguration....................................................................................... 570
Debugging and Verifying MSTP Congurations.........................................................................................................573
31 Multicast Features....................................................................................................................................575
Enabling IP Multicast.....................................................................................................................................................575
Implementation Information..........................................................................................................................................575
Multicast Policies........................................................................................................................................................... 576
IPv4 Multicast Policies............................................................................................................................................ 576
Understanding Multicast Traceroute (mtrace).......................................................................................................... 583
Important Points to Remember............................................................................................................................. 584
Printing Multicast Traceroute (mtrace) Paths........................................................................................................... 584
Supported Error Codes.................................................................................................................................................585
mtrace Scenarios...........................................................................................................................................................586
32 Object Tracking........................................................................................................................................592
Object Tracking Overview............................................................................................................................................ 592
Track Layer 2 Interfaces..........................................................................................................................................593
Track Layer 3 Interfaces..........................................................................................................................................593
Track IPv4 and IPv6 Routes................................................................................................................................... 594
Set Tracking Delays................................................................................................................................................. 595
VRRP Object Tracking............................................................................................................................................ 595
Object Tracking Conguration..................................................................................................................................... 595
Tracking a Layer 2 Interface................................................................................................................................... 595
Tracking a Layer 3 Interface................................................................................................................................... 596
Track an IPv4/IPv6 Route...................................................................................................................................... 598
Displaying Tracked Objects........................................................................................................................................... 601
33 Open Shortest Path First (OSPFv2 and OSPFv3)....................................................................................603
Protocol Overview.........................................................................................................................................................603
Autonomous System (AS) Areas........................................................................................................................... 603
Area Types................................................................................................................................................................ 604
Networks and Neighbors........................................................................................................................................605
Router Types............................................................................................................................................................ 605
Designated and Backup Designated Routers....................................................................................................... 607
Link-State Advertisements (LSAs)........................................................................................................................ 607
Router Priority and Cost.........................................................................................................................................608
OSPF with Dell Networking OS...................................................................................................................................609
Graceful Restart....................................................................................................................................................... 610
Fast Convergence (OSPFv2, IPv4 Only)............................................................................................................... 611
Multi-Process OSPFv2 with VRF............................................................................................................................611
RFC-2328 Compliant OSPF Flooding.....................................................................................................................611
OSPF ACK Packing.................................................................................................................................................. 612
Setting OSPF Adjacency with Cisco Routers.......................................................................................................612
Conguration Information..............................................................................................................................................613
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Contents