31 Open Shortest Path First (OSPFv2 and OSPFv3)......................................................486Protocol Overview......................................................................................................................................................... 486Autonomous System (AS) Areas.............................................................................................................................. 486Area Types................................................................................................................................................................487Networks and Neighbors..........................................................................................................................................488Router Types............................................................................................................................................................488Designated and Backup Designated Routers............................................................................................................490Link-State Advertisements (LSAs)........................................................................................................................... 490Router Priority and Cost........................................................................................................................................... 491OSPF with Dell Networking OS......................................................................................................................................492Graceful Restart.......................................................................................................................................................493Fast Convergence (OSPFv2, IPv4 Only).................................................................................................................. 494Multi-Process OSPFv2 (IPv4 only).......................................................................................................................... 494RFC-2328 Compliant OSPF Flooding....................................................................................................................... 494OSPF ACK Packing..................................................................................................................................................495Setting OSPF Adjacency with Cisco Routers........................................................................................................... 495Configuration Information.............................................................................................................................................. 496Configuration Task List for OSPFv2 (OSPF for IPv4)...............................................................................................496Sample Configurations for OSPFv2............................................................................................................................... 509Basic OSPFv2 Router Topology............................................................................................................................... 509OSPF Area 0 — Te 1/1 and 1/2................................................................................................................................509OSPF Area 0 — Te 3/1 and 3/2............................................................................................................................... 510OSPF Area 0 — Te 2/1 and 2/2............................................................................................................................... 510Configuration Task List for OSPFv3 (OSPF for IPv6)......................................................................................................510Enabling IPv6 Unicast Routing...................................................................................................................................511Assigning IPv6 Addresses on an Interface..................................................................................................................511Assigning Area ID on an Interface.............................................................................................................................. 511Assigning OSPFv3 Process ID and Router ID Globally................................................................................................511Configuring Stub Areas............................................................................................................................................. 512Configuring Passive-Interface................................................................................................................................... 512Redistributing Routes................................................................................................................................................512Configuring a Default Route......................................................................................................................................513Enabling OSPFv3 Graceful Restart........................................................................................................................... 513OSPFv3 Authentication Using IPsec......................................................................................................................... 515Troubleshooting OSPFv3.......................................................................................................................................... 52132 Policy-based Routing (PBR)......................................................................................523Overview........................................................................................................................................................................523Implementing Policy-based Routing with Dell Networking OS........................................................................................ 524Configuration Task List for Policy-based Routing........................................................................................................... 525PBR Exceptions (Permit)......................................................................................................................................... 527Sample Configuration.....................................................................................................................................................529Create the Redirect-List GOLDAssign Redirect-List GOLD to Interface 2/11View Redirect-List GOLD.................... 53033 PIM Sparse-Mode (PIM-SM)....................................................................................53418