Concept Guide

32 Multicast Features................................................................................................................................... 610
Enabling IP Multicast..................................................................................................................................................... 610
Implementation Information.......................................................................................................................................... 610
Multicast Policies.............................................................................................................................................................611
IPv4 Multicast Policies..............................................................................................................................................611
Understanding Multicast Traceroute (mtrace)........................................................................................................... 618
Important Points to Remember..............................................................................................................................619
Printing Multicast Traceroute (mtrace) Paths............................................................................................................ 619
Supported Error Codes.................................................................................................................................................620
mtrace Scenarios............................................................................................................................................................621
33 Object Tracking........................................................................................................................................627
Object Tracking Overview.............................................................................................................................................627
Track Layer 2 Interfaces..........................................................................................................................................628
Track Layer 3 Interfaces..........................................................................................................................................628
Track IPv4 and IPv6 Routes................................................................................................................................... 629
Set Tracking Delays................................................................................................................................................. 630
VRRP Object Tracking............................................................................................................................................ 630
Object Tracking Conguration..................................................................................................................................... 630
Tracking a Layer 2 Interface................................................................................................................................... 630
Tracking a Layer 3 Interface.................................................................................................................................... 631
Track an IPv4/IPv6 Route...................................................................................................................................... 633
Displaying Tracked Objects........................................................................................................................................... 637
34 Open Shortest Path First (OSPFv2 and OSPFv3)....................................................................................639
Protocol Overview.........................................................................................................................................................639
Autonomous System (AS) Areas........................................................................................................................... 639
Area Types................................................................................................................................................................ 640
Networks and Neighbors.........................................................................................................................................641
Router Types............................................................................................................................................................. 641
Designated and Backup Designated Routers....................................................................................................... 643
Link-State Advertisements (LSAs)........................................................................................................................643
Router Priority and Cost.........................................................................................................................................644
OSPF with Dell EMC Networking OS.........................................................................................................................645
Graceful Restart...................................................................................................................................................... 646
Fast Convergence (OSPFv2, IPv4 Only).............................................................................................................. 647
Multi-Process OSPFv2 with VRF.......................................................................................................................... 647
RFC-2328 Compliant OSPF Flooding....................................................................................................................647
OSPF ACK Packing................................................................................................................................................. 648
Setting OSPF Adjacency with Cisco Routers...................................................................................................... 648
Conguration Information.............................................................................................................................................649
Conguration Task List for OSPFv2 (OSPF for IPv4)........................................................................................ 649
OSPFv3 NSSA............................................................................................................................................................... 663
NSSA Options.......................................................................................................................................................... 663
Conguration Task List for OSPFv3 (OSPF for IPv6).............................................................................................. 664
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