Concept Guide

Router 1 Running-CongurationRouter 2 Running-CongurationRouter 3 Running-
CongurationSFTOS Example Running-Conguration.......................................................................................546
Debugging and Verifying MSTP Congurations........................................................................................................ 549
31 Multicast Features.................................................................................................................................... 551
Enabling IP Multicast..................................................................................................................................................... 551
Implementation Information.......................................................................................................................................... 551
Multicast Policies...........................................................................................................................................................552
IPv4 Multicast Policies............................................................................................................................................552
Understanding Multicast Traceroute (mtrace).......................................................................................................... 559
Important Points to Remember............................................................................................................................. 560
Printing Multicast Traceroute (mtrace) Paths........................................................................................................... 560
Supported Error Codes..................................................................................................................................................561
mtrace Scenarios...........................................................................................................................................................562
32 Object Tracking....................................................................................................................................... 568
Object Tracking Overview............................................................................................................................................ 568
Track Layer 2 Interfaces......................................................................................................................................... 569
Track Layer 3 Interfaces......................................................................................................................................... 569
Track IPv4 and IPv6 Routes................................................................................................................................... 570
Set Tracking Delays.................................................................................................................................................. 571
VRRP Object Tracking............................................................................................................................................. 571
Object Tracking Conguration...................................................................................................................................... 571
Tracking a Layer 2 Interface.................................................................................................................................... 571
Tracking a Layer 3 Interface................................................................................................................................... 572
Track an IPv4/IPv6 Route.......................................................................................................................................574
Displaying Tracked Objects........................................................................................................................................... 578
33 Open Shortest Path First (OSPFv2 and OSPFv3)....................................................................................580
Protocol Overview.........................................................................................................................................................580
Autonomous System (AS) Areas........................................................................................................................... 580
Area Types................................................................................................................................................................. 581
Networks and Neighbors........................................................................................................................................582
Router Types............................................................................................................................................................ 582
Designated and Backup Designated Routers....................................................................................................... 584
Link-State Advertisements (LSAs)........................................................................................................................584
Router Priority and Cost.........................................................................................................................................585
OSPF with Dell EMC Networking OS.........................................................................................................................586
Graceful Restart.......................................................................................................................................................587
Fast Convergence (OSPFv2, IPv4 Only)..............................................................................................................588
Multi-Process OSPFv2 with VRF..........................................................................................................................588
OSPF ACK Packing................................................................................................................................................. 588
Setting OSPF Adjacency with Cisco Routers...................................................................................................... 588
Conguration Information.............................................................................................................................................589
Conguration Task List for OSPFv2 (OSPF for IPv4)........................................................................................ 589
OSPFv3 NSSA............................................................................................................................................................... 603
Contents
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