Concept Guide

Table Of Contents
Tracking a Layer 3 Interface....................................................................................................................................621
Track an IPv4/IPv6 Route...................................................................................................................................... 623
Displaying Tracked Objects........................................................................................................................................... 627
35 Open Shortest Path First (OSPFv2 and OSPFv3)....................................................................................629
Protocol Overview.........................................................................................................................................................629
Autonomous System (AS) Areas........................................................................................................................... 629
Area Types................................................................................................................................................................ 630
Networks and Neighbors.........................................................................................................................................631
Router Types............................................................................................................................................................. 631
Designated and Backup Designated Routers....................................................................................................... 633
Link-State Advertisements (LSAs)........................................................................................................................633
Router Priority and Cost......................................................................................................................................... 634
OSPF with Dell EMC Networking OS.........................................................................................................................635
Graceful Restart...................................................................................................................................................... 636
Fast Convergence (OSPFv2, IPv4 Only).............................................................................................................. 637
Multi-Process OSPFv2 with VRF.......................................................................................................................... 637
OSPF ACK Packing..................................................................................................................................................637
Setting OSPF Adjacency with Cisco Routers.......................................................................................................637
Conguration Information.............................................................................................................................................638
Conguration Task List for OSPFv2 (OSPF for IPv4)........................................................................................ 638
Sample Congurations 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
Conguration 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
Conguring Stub Areas...........................................................................................................................................656
Conguring Passive-Interface................................................................................................................................657
Redistributing Routes..............................................................................................................................................657
Conguring 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
Contents
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