Configuring RIP timers ··········································································································································· 31
Specifying a RIP neighbor ···································································································································· 34
Configuring RIP-to-MIB binding ···························································································································· 34
Configuring RIP FRR ······················································································································································· 35
Configuring BFD for RIP ················································································································································· 36
Displaying and maintaining RIP ··································································································································· 37
RIP configuration examples ··········································································································································· 37
Configuring RIP version ········································································································································ 37
RIP FRR configuration example ···························································································································· 45
Troubleshooting RIP ························································································································································ 53
No RIP updates received ······································································································································ 53
Route oscillation occurred ···································································································································· 53
OSPF configuration ···················································································································································· 55
Introduction to OSPF ······················································································································································ 55
Basic concepts ······················································································································································· 55
Router types ···························································································································································· 60
Classification of OSPF networks ·························································································································· 61
DR and BDR ··························································································································································· 62
OSPF packet formats ············································································································································· 63
Supported features ················································································································································ 71
Protocols and standards ······································································································································· 72
OSPF configuration task list ·········································································································································· 72
Enabling OSPF ······························································································································································· 73
Configuration prerequisites ·································································································································· 73
Configuration procedure ······································································································································ 74
Configuring OSPF areas ··············································································································································· 75
Configuration prerequisites ·································································································································· 75
Configuring a stub area ······································································································································· 75
Configuring an NSSA area ·································································································································· 76
Configuring a virtual link ······································································································································ 76
Configuring OSPF network types ································································································································· 77
Configuration prerequisites ·································································································································· 77
Configuring OSPF route control ··································································································································· 80
Configuration prerequisites ·································································································································· 80
ii