ii
Enabling DLDP ································································································································································ 30
Setting the interval to send advertisement packets ····································································································· 30
Setting the DelayDown timer ········································································································································ 30
Setting the port shutdown mode ··································································································································· 31
Configuring DLDP authentication ·································································································································· 31
Displaying and maintaining DLDP ································································································································ 32
DLDP configuration examples ······································································································································· 32
Automatically shutting down unidirectional links ······························································································· 32
Manually shutting down unidirectional links ······································································································ 35
Configuring Smart Link ·············································································································································· 40
Smart Link overview ······················································································································································· 40
Terminology ··························································································································································· 41
How Smart Link works ·········································································································································· 41
Smart Link collaboration mechanisms ················································································································· 42
Smart Link configuration task list ·································································································································· 43
Configuring a Smart Link device ·································································································································· 43
Configuration prerequisites ·································································································································· 43
Configuring protected VLANs for a smart link group ························································································ 43
Configuring member ports for a smart link group ····························································································· 44
Configuring role preemption for a smart link group·························································································· 45
Enabling the sending of flush messages ············································································································· 45
Configuring the collaboration between Smart Link and Track ········································································· 46
Configuring an associated device ······························································································································· 46
Configuration prerequisites ·································································································································· 46
Enabling the receiving of flush messages ··········································································································· 46
Displaying and maintaining Smart Link ······················································································································· 47
Smart Link configuration examples ······························································································································ 47
Single smart link group configuration example ································································································· 47
Multiple smart link groups load sharing configuration example ······································································ 52
Smart Link and Track collaboration configuration example ············································································· 56
Configuring Monitor Link ··········································································································································· 62
Overview ········································································································································································· 62
Configuring Monitor Link ·············································································································································· 63
Creating a monitor link group ····························································································································· 63
Configuring monitor link group member interfaces ··························································································· 63
Configuring the switchover delay for a monitor link group ·············································································· 64
Displaying and maintaining Monitor Link ··················································································································· 64
Monitor Link configuration example ···························································································································· 65
Configuring VRRP ······················································································································································· 69
Overview ········································································································································································· 69
VRRP standard mode ····················································································································································· 70
Router priority in a VRRP group ··························································································································· 70
Preemption ····························································································································································· 70
Authentication method ·········································································································································· 71
VRRP timers ···························································································································································· 71
Master election ······················································································································································ 72
VRRP tracking ························································································································································· 72
VRRP application ··················································································································································· 72
VRRP load balancing mode ·········································································································································· 74
Virtual MAC address assignment ························································································································ 74
Virtual forwarder ··················································································································································· 76
Protocols and standards ················································································································································ 78
Configuring IPv4 VRRP ·················································································································································· 78
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