ii
Tuning and optimizing RIP networks ···························································································································· 29
Configuration prerequisites ·································································································································· 29
Configuring RIP timers ··········································································································································· 29
Configuring split horizon and poison reverse ···································································································· 30
Configuring the maximum number of ECMP routes ·························································································· 31
Enabling zero field check on incoming RIPv1 messages ·················································································· 31
Enabling source IP address check on incoming RIP updates ············································································ 31
Configuring RIPv2 message authentication ········································································································ 32
Specifying a RIP neighbor ···································································································································· 32
Configuring RIP network management ················································································································ 33
Configuring the RIP packet sending rate ············································································································ 33
Setting the maximum length of RIP packets ········································································································ 33
Configuring RIP GR ························································································································································ 34
Configuring BFD for RIP ················································································································································· 34
Configuring single-hop echo detection (for a directly connected RIP neighbor) ············································ 35
Configuring single-hop echo detection (for a specific destination) ·································································· 35
Configuring bidirectional control detection ········································································································ 36
Configuring RIP FRR ······················································································································································· 36
Displaying and maintaining RIP ··································································································································· 37
RIP configuration examples ··········································································································································· 37
Configuring basic RIP ··········································································································································· 37
Configuring RIP route redistribution ····················································································································· 40
Configuring an additional metric for a RIP interface ························································································· 42
Configuring RIP to advertise a summary route ··································································································· 44
Configuring BFD for RIP (single-hop echo detection for a directly connected neighbor) ······························ 46
Configure BFD for RIP (single-hop echo detection for a specific destination) ················································· 49
Configuring BFD for RIP (bidirectional control detection) ················································································· 51
Configuring RIP FRR ·············································································································································· 55
Configuring OSPF ······················································································································································ 58
Overview ········································································································································································· 58
OSPF packets ························································································································································· 58
LSA types ································································································································································ 59
OSPF areas ···························································································································································· 59
Router types ···························································································································································· 61
Route types ····························································································································································· 62
Route calculation ··················································································································································· 63
OSPF network types ·············································································································································· 63
DR and BDR ··························································································································································· 63
Protocols and standards ······································································································································· 64
OSPF configuration task list ·········································································································································· 65
Enabling OSPF ······························································································································································· 66
Configuration prerequisites ·································································································································· 66
Configuration guidelines ······································································································································ 66
Enabling OSPF on a network ······························································································································· 67
Enabling OSPF on an interface ··························································································································· 67
Configuring OSPF areas ··············································································································································· 68
Configuring a stub area ······································································································································· 68
Configuring an NSSA area ·································································································································· 69
Configuring a virtual link ······································································································································ 69
Configuring OSPF network types ································································································································· 70
Configuration prerequisites ·································································································································· 70
Configuring the broadcast network type for an interface ················································································· 70
Configuring the NBMA network type for an interface ······················································································ 71
Configuring the P2MP network type for an interface ························································································ 72
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