ii
Configuring received/redistributed route filtering ····························································································· 32
Configuring a preference for RIP ························································································································· 32
Configuring RIP route redistribution ····················································································································· 33
Tuning and optimizing RIP networks ···························································································································· 33
Configuration prerequisites ·································································································································· 33
Configuring RIP timers ··········································································································································· 33
Configuring split horizon and poison reverse ···································································································· 34
Configuring the maximum number of ECMP routes ·························································································· 35
Enabling zero field check on incoming RIPv1 messages ·················································································· 35
Enabling source IP address check on incoming RIP updates ············································································ 36
Configuring RIPv2 message authentication ········································································································ 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
Configuring RIP GR ························································································································································ 38
Configuring BFD for RIP ················································································································································· 39
Configuring single-hop echo detection (for a directly connected RIP neighbor) ············································ 39
Configuring single-hop echo detection (for a specific destination) ·································································· 39
Configuring bidirectional control detection ········································································································ 40
Configuring RIP FRR ······················································································································································· 40
Configuration restrictions and guidelines ··········································································································· 41
Configuration prerequisites ·································································································································· 41
Configuration procedure ······································································································································ 41
Displaying and maintaining RIP ··································································································································· 42
RIP configuration examples ··········································································································································· 42
Basic RIP configuration example ························································································································· 42
RIP route redistribution configuration example··································································································· 45
RIP interface additional metric configuration example ······················································································ 47
RIP summary route advertisement configuration example ················································································· 49
BFD for RIP configuration example (single-hop echo detection for a directly connected neighbor) ············ 51
BFD for RIP configuration example (single hop echo detection for a specific destination) ··························· 54
BFD for RIP configuration example (bidirectional detection in BFD control packet mode) ···························· 56
RIP FRR configuration example ···························································································································· 60
Configuring OSPF ······················································································································································ 63
Overview ········································································································································································· 63
OSPF packets ························································································································································· 63
LSA types ································································································································································ 63
OSPF areas ···························································································································································· 64
Router types ···························································································································································· 67
Route types ····························································································································································· 67
Route calculation ··················································································································································· 68
OSPF network types ·············································································································································· 68
DR and BDR ··························································································································································· 68
Protocols and standards ······································································································································· 70
OSPF configuration task list ·········································································································································· 70
Enabling OSPF ······························································································································································· 71
Configuration prerequisites ·································································································································· 71
Configuration guidelines ······································································································································ 71
Enabling OSPF on a network ······························································································································· 72
Enabling OSPF on an interface ··························································································································· 73
Configuring OSPF areas ··············································································································································· 73
Configuring a stub area ······································································································································· 73
Configuring an NSSA area ·································································································································· 74
