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Configuring the P2P network type for an interface ··························································································· 72
Configuring OSPF route control ··································································································································· 72
Configuration prerequisites ·································································································································· 72
Configuring OSPF route summarization ············································································································· 73
Configuring received OSPF route filtering ·········································································································· 74
Configuring Type-3 LSA filtering ·························································································································· 74
Configuring an OSPF cost for an interface ········································································································ 74
Configuring the maximum number of ECMP routes ·························································································· 75
Configuring OSPF preference ······························································································································ 75
Configuring OSPF route redistribution ················································································································ 76
Advertising a host route ········································································································································ 77
Tuning and optimizing OSPF networks ························································································································ 77
Configuration prerequisites ·································································································································· 78
Configuring OSPF timers ······································································································································ 78
Specifying LSA transmission delay ······················································································································ 79
Specifying SPF calculation interval ······················································································································ 79
Specifying the LSA arrival interval ······················································································································· 80
Specifying the LSA generation interval ··············································································································· 80
Disabling interfaces from receiving and sending OSPF packets ······································································ 81
Configuring stub routers ······································································································································· 81
Configuring OSPF authentication ························································································································ 82
Adding the interface MTU into DD packets ········································································································ 83
Configuring a DSCP value for OSPF packets ····································································································· 83
Configuring the maximum number of external LSAs in LSDB ··········································································· 84
Configuring OSPF exit overflow interval ············································································································· 84
Enabling compatibility with RFC 1583 ··············································································································· 84
Logging neighbor state changes ·························································································································· 85
Configuring OSPF network management ··········································································································· 85
Configuring the LSU transmit rate ························································································································ 86
Enabling OSPF ISPF ·············································································································································· 86
Configuring prefix suppression····································································································································· 87
Configuring prefix suppression for an OSPF process ······················································································· 87
Configuring prefix suppression on an interface ································································································· 87
Configuring prefix prioritization ··································································································································· 88
Configuring OSPF PIC ··················································································································································· 88
Configuring OSPF GR ··················································································································································· 88
Configuring OSPF GR restarter ···························································································································· 89
Configuring OSPF GR helper ······························································································································· 90
Triggering OSPF GR ············································································································································· 90
Configuring BFD for OSPF ············································································································································ 91
Configuring bidirectional control detection ········································································································ 91
Configuring single-hop echo detection ··············································································································· 91
Configuring OSPF FRR ··················································································································································· 91
Configuration prerequisites ·································································································································· 92
Configuration guidelines ······································································································································ 92
Configuring OSPF FRR to calculate a backup next hop using the LFA algorithm ·········································· 92
Configuring OSPF FRR to specify a backup next hop using a routing policy ················································· 93
Displaying and maintaining OSPF ······························································································································· 93
OSPF configuration examples ······································································································································ 95
Basic OSPF configuration example ····················································································································· 95
OSPF route redistribution configuration example ······························································································ 98
OSPF summary route advertisement configuration example ············································································ 99
OSPF stub area configuration example ············································································································ 102
OSPF NSSA area configuration example ········································································································ 105
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