Areas 411
Backbone Area 411
Stub Area 411
Not-so-Stubby Area 411
Routers 412
Area Border Routers 412
Autonomous System Boundary Routers (ASBR) 412
Interior Routers 412
OSPF Process and Router ID 412
Supported OSPF Network Types 413
Route Authentication Methods for OSPF 413
Plain Text Authentication 413
MD5 Authentication 413
Authentication Strategies 414
Key Rollover 414
Neighbors and Adjacency for OSPF 414
OSPF strict-mode Support for BFD Dampening 414
Enabling strict-mode 415
BFD strict-mode: Example 416
OSPF FIB Download Notification 417
Designated Router (DR) for OSPF 417
Default Route for OSPF 417
Link-State Advertisement Types for OSPF Version 2 417
Link-State Advertisement Types for OSPFv3 418
Virtual Link and Transit Area for OSPF 419
Passive Interface 420
OSPFv2 Sham Link Support for MPLS VPN 420
OSPFv3 Sham Link Support for MPLS VPN 422
Graceful Restart Procedure over the Sham-link 423
ECMP and OSPFv3 Sham-link 423
OSPF SPF Prefix Prioritization 423
Route Redistribution for OSPF 424
OSPF Shortest Path First Throttling 424
Nonstop Forwarding for OSPF Version 2 425
Graceful Shutdown for OSPFv3 426
Cisco ASR 9000 Series Aggregation Services Router Routing Configuration Guide, Release 5.3.x
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