Users Guide

31 Object Tracking........................................................................................................................................ 573
Object Tracking Overview.............................................................................................................................................573
Track Layer 2 Interfaces.......................................................................................................................................... 574
Track Layer 3 Interfaces.......................................................................................................................................... 574
Track IPv4 and IPv6 Routes................................................................................................................................... 575
Set Tracking Delays..................................................................................................................................................576
VRRP Object Tracking.............................................................................................................................................576
Object Tracking Conguration......................................................................................................................................576
Tracking a Layer 2 Interface................................................................................................................................... 576
Tracking a Layer 3 Interface....................................................................................................................................577
Track an IPv4/IPv6 Route...................................................................................................................................... 579
Displaying Tracked Objects...........................................................................................................................................582
32 Open Shortest Path First (OSPFv2 and OSPFv3)....................................................................................584
Protocol Overview.........................................................................................................................................................584
Autonomous System (AS) Areas........................................................................................................................... 584
Area Types................................................................................................................................................................ 585
Networks and Neighbors........................................................................................................................................586
Router Types............................................................................................................................................................ 586
Designated and Backup Designated Routers....................................................................................................... 588
Link-State Advertisements (LSAs)........................................................................................................................588
Router Priority and Cost.........................................................................................................................................589
OSPF with Dell Networking OS...................................................................................................................................590
Graceful Restart....................................................................................................................................................... 591
Fast Convergence (OSPFv2, IPv4 Only)..............................................................................................................592
Multi-Process OSPFv2 with VRF..........................................................................................................................592
RFC-2328 Compliant OSPF Flooding................................................................................................................... 592
OSPF ACK Packing................................................................................................................................................. 593
Setting OSPF Adjacency with Cisco Routers...................................................................................................... 593
Conguration Information.............................................................................................................................................594
Conguration Task List for OSPFv2 (OSPF for IPv4)........................................................................................ 594
Conguration Task List for OSPFv3 (OSPF for IPv6).............................................................................................. 608
Enabling IPv6 Unicast Routing...............................................................................................................................609
Applying cost for OSPFv3......................................................................................................................................609
Assigning IPv6 Addresses on an Interface............................................................................................................ 610
Assigning Area ID on an Interface.......................................................................................................................... 610
Assigning OSPFv3 Process ID and Router ID Globally........................................................................................ 610
Assigning OSPFv3 Process ID and Router ID to a VRF........................................................................................611
Conguring Stub Areas............................................................................................................................................ 611
Conguring Passive-Interface.................................................................................................................................612
Redistributing Routes...............................................................................................................................................612
Conguring a Default Route....................................................................................................................................612
Enabling OSPFv3 Graceful Restart........................................................................................................................613
OSPFv3 Authentication Using IPsec..................................................................................................................... 615
Troubleshooting OSPFv3.........................................................................................................................................621
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Contents