Users Guide

Flush MAC Addresses after a Topology Change........................................................................................................ 571
MSTP Sample Congurations.......................................................................................................................................571
Router 1 Running-CongurationRouter 2 Running-CongurationRouter 3 Running-
CongurationSFTOS Example Running-Conguration....................................................................................... 572
Debugging and Verifying MSTP Congurations........................................................................................................ 575
33 Multicast Features................................................................................................................................... 577
Enabling IP Multicast..................................................................................................................................................... 577
Implementation Information..........................................................................................................................................577
Multicast Policies........................................................................................................................................................... 578
IPv4 Multicast Policies............................................................................................................................................ 578
Understanding Multicast Traceroute (mtrace).......................................................................................................... 585
Important Points to Remember............................................................................................................................. 586
Printing Multicast Traceroute (mtrace) Paths........................................................................................................... 586
Supported Error Codes................................................................................................................................................. 587
mtrace Scenarios...........................................................................................................................................................588
34 Object Tracking........................................................................................................................................594
Object Tracking Overview............................................................................................................................................ 594
Track Layer 2 Interfaces......................................................................................................................................... 595
Track Layer 3 Interfaces......................................................................................................................................... 595
Track IPv4 and IPv6 Routes...................................................................................................................................596
Set Tracking Delays..................................................................................................................................................597
VRRP Object Tracking.............................................................................................................................................597
Object Tracking Conguration......................................................................................................................................597
Tracking a Layer 2 Interface................................................................................................................................... 597
Tracking a Layer 3 Interface................................................................................................................................... 598
Track an IPv4/IPv6 Route......................................................................................................................................600
Displaying Tracked Objects...........................................................................................................................................603
35 Open Shortest Path First (OSPFv2 and OSPFv3)................................................................................... 605
Protocol Overview.........................................................................................................................................................605
Autonomous System (AS) Areas........................................................................................................................... 605
Area Types................................................................................................................................................................ 606
Networks and Neighbors........................................................................................................................................ 607
Router Types............................................................................................................................................................ 607
Designated and Backup Designated Routers.......................................................................................................609
Link-State Advertisements (LSAs)........................................................................................................................609
Router Priority and Cost..........................................................................................................................................610
OSPF with Dell Networking OS.....................................................................................................................................611
Graceful Restart....................................................................................................................................................... 612
Fast Convergence (OSPFv2, IPv4 Only)...............................................................................................................613
Multi-Process OSPFv2 with VRF...........................................................................................................................613
OSPF ACK Packing.................................................................................................................................................. 613
Setting OSPF Adjacency with Cisco Routers.......................................................................................................613
Conguration Information..............................................................................................................................................614
20
Contents