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Configuring a priority for RIP ······························································································································· 29
Configuring RIP route redistribution ····················································································································· 30
Tuning and optimizing RIP networks ···························································································································· 30
Configuring RIP timers ··········································································································································· 30
Configuring split horizon and poison reverse ···································································································· 31
Configuring the maximum number of ECMP routes ·························································································· 32
Enabling zero field check on incoming RIPv1 messages ·················································································· 32
Enabling source IP address check on incoming RIP updates ············································································ 32
Configuring RIPv2 message authentication ········································································································ 33
Specifying a RIP neighbor ···································································································································· 33
Configuring RIP-to-MIB binding ···························································································································· 34
Configuring the RIP packet sending rate ············································································································ 34
Configuring RIP FRR ·············································································································································· 34
Configuring BFD for RIP ················································································································································· 35
Configuring single-hop echo detection ··············································································································· 36
Configuring bidirectional control detection ········································································································ 36
Displaying and maintaining RIP ··································································································································· 36
RIP configuration examples ··········································································································································· 37
Configuring RIP version ········································································································································ 37
Configuring RIP route redistribution ····················································································································· 38
Configuring an additional metric for a RIP interface ························································································· 41
Configuring RIP to advertise a summary route ··································································································· 42
RIP FRR configuration example ···························································································································· 45
Configuring BFD for RIP (single-hop echo detection) ························································································· 46
Configuring BFD for RIP (bidirectional control detection) ················································································· 49
Troubleshooting RIP ························································································································································ 53
No RIP updates received ······································································································································ 53
Route oscillation occurred ···································································································································· 54
Configuring OSPF ······················································································································································ 55
Introduction to OSPF ······················································································································································ 55
Basic concepts ······················································································································································· 55
OSPF areas ···························································································································································· 57
Router types ···························································································································································· 60
OSPF network classification ································································································································· 61
DR and BDR ··························································································································································· 61
OSPF packet formats ············································································································································· 62
Supported OSPF features ····································································································································· 71
Protocols and standards ······································································································································· 73
OSPF configuration task list ·········································································································································· 74
Enabling OSPF ······························································································································································· 75
Configuration prerequisites ·································································································································· 75
Configuration guidelines ······································································································································ 75
Configuration procedure ······································································································································ 76
Configuring OSPF areas ··············································································································································· 76
Configuration prerequisites ·································································································································· 77
Configuring a stub area ······································································································································· 77
Configuring an NSSA area ·································································································································· 77
Configuring a virtual link ······································································································································ 78
Configuring OSPF network types ································································································································· 78
Configuration prerequisites ·································································································································· 79
Configuring the broadcast network type for an interface ················································································· 79
Configuring the NBMA network type for an interface ······················································································ 79
Configuring the P2MP network type for an interface ························································································ 80
Configuring the P2P network type for an interface ··························································································· 81
