Concept Guide
Track an IPv4/IPv6 Route...................................................................................................................................... 622
Displaying Tracked Objects...........................................................................................................................................626
35 Open Shortest Path First (OSPFv2 and OSPFv3)....................................................................................628
Protocol Overview.........................................................................................................................................................628
Autonomous System (AS) Areas........................................................................................................................... 628
Area Types................................................................................................................................................................ 629
Networks and Neighbors........................................................................................................................................630
Router Types............................................................................................................................................................ 630
Designated and Backup Designated Routers....................................................................................................... 632
Link-State Advertisements (LSAs)........................................................................................................................632
Router Priority and Cost.........................................................................................................................................633
OSPF with Dell EMC Networking OS.........................................................................................................................634
Graceful Restart...................................................................................................................................................... 635
Fast Convergence (OSPFv2, IPv4 Only)..............................................................................................................636
Multi-Process OSPFv2 with VRF..........................................................................................................................636
RFC-2328 Compliant OSPF Flooding................................................................................................................... 636
OSPF ACK Packing..................................................................................................................................................637
Setting OSPF Adjacency with Cisco Routers.......................................................................................................637
Conguration Information.............................................................................................................................................638
Conguration Task List for OSPFv2 (OSPF for IPv4)........................................................................................ 638
Sample Congurations for OSPFv2............................................................................................................................. 651
Basic OSPFv2 Router Topology..............................................................................................................................651
OSPF Area 0 — Te 1/1 and 1/2............................................................................................................................. 652
OSPF Area 0 — Te 3/1 and 3/2............................................................................................................................652
OSPF Area 0 — Te 2/1 and 2/2............................................................................................................................653
OSPFv3 NSSA............................................................................................................................................................... 653
NSSA Options..........................................................................................................................................................653
Conguration Task List for OSPFv3 (OSPF for IPv6).............................................................................................. 653
Enabling IPv6 Unicast Routing...............................................................................................................................654
Applying cost for OSPFv3......................................................................................................................................654
Assigning IPv6 Addresses on an Interface........................................................................................................... 655
Assigning Area ID on an Interface..........................................................................................................................655
Assigning OSPFv3 Process ID and Router ID Globally........................................................................................655
Assigning OSPFv3 Process ID and Router ID to a VRF......................................................................................656
Conguring Stub Areas...........................................................................................................................................656
Conguring Passive-Interface................................................................................................................................657
Redistributing Routes..............................................................................................................................................657
Conguring a Default Route................................................................................................................................... 657
Enabling OSPFv3 Graceful Restart.......................................................................................................................658
OSPFv3 Authentication Using IPsec.....................................................................................................................660
Troubleshooting OSPFv3........................................................................................................................................666
36 Policy-based Routing (PBR)....................................................................................................................668
Overview.........................................................................................................................................................................668
Implementing PBR.........................................................................................................................................................669
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