iii
IPv4 VRRP configuration task list ·························································································································· 78
Specifying an IPv4 VRRP operating mode ·········································································································· 79
Specifying the IPv4 VRRP version ························································································································ 79
Creating a VRRP group and assigning a virtual IP address ············································································· 79
Configuring the router priority, preemptive mode, and tracking function ······················································ 80
Configuring IPv4 VRRP packet attributes ············································································································ 81
Configuring VF tracking ········································································································································ 82
Enabling SNMP notifications for VRRP ················································································································ 83
Disabling an IPv4 VRRP group ····························································································································· 83
Displaying and maintaining IPv4 VRRP ··············································································································· 84
Configuring IPv6 VRRP ·················································································································································· 84
IPv6 VRRP configuration task list ·························································································································· 84
Specifying an IPv6 VRRP operating mode ·········································································································· 84
Creating a VRRP group and assigning a virtual IPv6 address ········································································· 85
Configuring the router priority, preemptive mode, and tracking function ······················································ 86
Configuring VF tracking ········································································································································ 87
Configuring IPv6 VRRP packet attributes ············································································································ 87
Disabling an IPv6 VRRP group ····························································································································· 88
Displaying and maintaining IPv6 VRRP ··············································································································· 88
IPv4 VRRP configuration examples ······························································································································· 89
Single VRRP group configuration example ········································································································· 89
Multiple VRRP groups configuration example ···································································································· 92
VRRP load balancing configuration example ····································································································· 94
IPv6 VRRP configuration examples ····························································································································· 102
Single VRRP group configuration example ······································································································· 102
Multiple VRRP groups configuration example ·································································································· 105
VRRP load balancing configuration example ··································································································· 109
Troubleshooting VRRP ·················································································································································· 117
An error prompt is displayed ····························································································································· 117
Multiple masters appear in a VRRP group ········································································································ 118
Fast VRRP state flapping ····································································································································· 118
Configuring BFD ······················································································································································ 119
Introduction to BFD ······················································································································································· 119
BFD session establishment ·································································································································· 119
BFD session modes and operating modes ········································································································ 120
Supported features ·············································································································································· 120
Protocols and standards ····································································································································· 121
Configuring BFD basic functions ································································································································ 121
Configuring echo packet mode ························································································································· 121
Configuring control packet mode ······················································································································ 122
Displaying and maintaining BFD ································································································································ 123
Configuring Track ··················································································································································· 125
Overview ······································································································································································· 125
Collaboration fundamentals ······························································································································· 125
Collaboration application example ··················································································································· 126
Track configuration task list ········································································································································· 126
Associating the Track module with a detection module ··························································································· 127
Associating Track with NQA ····························································································································· 127
Associating Track with BFD ································································································································ 128
Associating Track with CFD ······························································································································· 128
Associating Track with interface management ································································································· 129
Associating the Track module with an application module ····················································································· 129
Associating Track with VRRP ······························································································································ 129
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