3com 5500-SI Manual De Usuario

C

HAPTER

 25: A

UTO

 D

ETECT

 C

ONFIGURATION

Configure Switch A.

<S5500 A> system-view

[S5500 A] detect-group 8

[S5500 A-detect-group-8] detect-list 1 ip address 10.1.1.4 nexthop 

[S5500 A] ip route-static 10.1.1.4 24 192.168.1.2 detect-group 8

You can control the preferences of VRRP backup groups according to auto detect 
results to enable automatic switch between the master and the backup switch as 
follows:

■

Decrease the preference value of a VRRP backup group when the result of the 
detecting group is unreachable.

■

Resume the preference of a VRRP backup group when the result of the detecting 
group is reachable.

■

Switch B and switch D form VRRP backup group 1, whose virtual IP address is 
192.168.1.10.

■

Packets sourced from Switch A and destined for Switch C is forwarded by Switch B 
under normal situations.

■

When the connection between Switch B and Switch C fails, Switch D becomes the 
Master in backup group 1 automatically and the link from Switch D to Switch C, 
the secondary link, is enabled.

Table 593   Configure the auto detect function for VRRP

Enter system view

system-view

-

Enter VLAN interface 
view

interface vlan-interface vlan_id

-

Enable the auto detect 
function for VRRP

vrrp vrid virtual-router-id track 
detect-group group-number [ 
reduced value-reduced ]

Required