ii
Advertising a default route ······················································································································· 31
Configuring received/redistributed route filtering······················································································ 32
Setting a preference for RIP ····················································································································· 32
Configuring RIP route redistribution ········································································································· 32
Tuning and optimizing RIP networks ··············································································································· 33
Configuration prerequisites ······················································································································ 33
Setting RIP timers ···································································································································· 33
Enabling split horizon and poison reverse ······························································································· 34
Setting the maximum number of RIP ECMP routes ················································································· 34
Enabling zero field check on incoming RIPv1 messages ········································································· 35
Enabling source IP address check on incoming RIP updates·································································· 35
Configuring RIPv2 message authentication ····························································································· 35
Setting the RIP triggered update interval ································································································· 36
Specifying a RIP neighbor ························································································································ 36
Configuring RIP network management ···································································································· 37
Configuring the RIP packet sending rate ································································································· 37
Setting the maximum length of RIP packets ···························································································· 38
Setting the DSCP value for outgoing RIP packets ··················································································· 38
Configuring RIP GR ········································································································································· 38
Enabling RIP NSR············································································································································ 39
Configuring BFD for RIP ·································································································································· 39
Configuring single-hop echo detection (for a directly connected RIP neighbor) ······································ 40
Configuring single-hop echo detection (for a specific destination) ··························································· 40
Configuring bidirectional control detection ······························································································· 41
Configuring RIP FRR ······································································································································· 41
Configuration restrictions and guidelines ································································································· 41
Configuration prerequisites ······················································································································ 42
Configuring RIP FRR ······························································································································· 42
Enabling BFD for RIP FRR ······················································································································ 42
Displaying and maintaining RIP ······················································································································· 42
RIP configuration examples ····························································································································· 43
Configuring basic RIP ······························································································································ 43
Configuring RIP route redistribution ········································································································· 46
Configuring an additional metric for a RIP interface················································································· 48
Configuring RIP to advertise a summary route ························································································ 49
Configuring RIP GR ································································································································· 52
Configuring RIP NSR ······························································································································· 52
Configuring BFD for RIP (single-hop echo detection for a directly connected neighbor) ························· 54
Configuring BFD for RIP (single hop echo detection for a specific destination) ······································· 57
Configuring BFD for RIP (bidirectional detection in BFD control packet mode) ······································· 59
Configuring RIP FRR ······························································································································· 62
Configuring OSPF························································································ 65
Overview ·························································································································································· 65
OSPF packets ·········································································································································· 65
LSA types ················································································································································· 65
OSPF areas ············································································································································· 66
Router types ············································································································································· 68
Route types ·············································································································································· 69
Route calculation ······································································································································ 69
OSPF network types ································································································································ 70
DR and BDR ············································································································································ 70
Protocols and standards ·························································································································· 71
OSPF configuration task list ····························································································································· 71
Enabling OSPF ················································································································································ 73
Configuration prerequisites ······················································································································ 73
Configuration guidelines ··························································································································· 73
Enabling OSPF on a network ··················································································································· 74
Enabling OSPF on an interface················································································································ 74
Configuring OSPF areas ·································································································································· 75
Configuring a stub area ···························································································································· 75
Configuring an NSSA area ······················································································································· 76
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