Users Guide

32 Open Shortest Path First (OSPFv2 and OSPFv3).................................................................................... 571
Protocol Overview..........................................................................................................................................................571
Autonomous System (AS) Areas............................................................................................................................ 571
Area Types................................................................................................................................................................ 572
Networks and Neighbors........................................................................................................................................ 573
Router Types.............................................................................................................................................................573
Designated and Backup Designated Routers....................................................................................................... 575
Link-State Advertisements (LSAs)........................................................................................................................ 575
Router Priority and Cost......................................................................................................................................... 576
OSPF with Dell Networking OS................................................................................................................................... 577
Graceful Restart.......................................................................................................................................................578
Fast Convergence (OSPFv2, IPv4 Only).............................................................................................................. 579
Multi-Process OSPFv2 with VRF.......................................................................................................................... 579
RFC-2328 Compliant OSPF Flooding....................................................................................................................579
OSPF ACK Packing................................................................................................................................................. 580
Setting OSPF Adjacency with Cisco Routers...................................................................................................... 580
Conguration Information..............................................................................................................................................581
Conguration Task List for OSPFv2 (OSPF for IPv4)......................................................................................... 581
Conguration Task List for OSPFv3 (OSPF for IPv6).............................................................................................. 595
Enabling IPv6 Unicast Routing...............................................................................................................................596
Assigning IPv6 Addresses on an Interface........................................................................................................... 596
Assigning Area ID on an Interface.......................................................................................................................... 597
Assigning OSPFv3 Process ID and Router ID Globally........................................................................................ 597
Assigning OSPFv3 Process ID and Router ID to a VRF......................................................................................598
Applying cost for OSPFv3......................................................................................................................................598
Conguring Stub Areas...........................................................................................................................................599
Conguring Passive-Interface................................................................................................................................599
Redistributing Routes..............................................................................................................................................599
Conguring a Default Route...................................................................................................................................600
Applying cost for OSPFv3......................................................................................................................................600
Enabling OSPFv3 Graceful Restart.......................................................................................................................600
OSPFv3 Authentication Using IPsec.....................................................................................................................603
Troubleshooting OSPFv3........................................................................................................................................609
33 Policy-based Routing (PBR)..................................................................................................................... 611
Overview.......................................................................................................................................................................... 611
Implementing PBR..........................................................................................................................................................612
Conguration Task List for Policy-based Routing.......................................................................................................612
PBR Exceptions (Permit)........................................................................................................................................ 613
Create a Redirect List.............................................................................................................................................. 613
Create a Rule for a Redirect-list............................................................................................................................. 613
Apply a Redirect-list to an Interface using a Redirect-group.............................................................................. 615
Sample Conguration.....................................................................................................................................................617
Create the Redirect-List GOLDAssign Redirect-List GOLD to Interface 2/11View Redirect-List GOLD...... 618
20
Contents