3com 4200G ユーザーズマニュアル

C

HAPTER

 13: A

UTO

 D

ETECT

 C

ONFIGURATION

 G

UIDE

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The master switch remains as master when the detected group is reachable.

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The priority of the master switch decreases and thus becomes a backup when 
the detected group is unreachable.

Figure 20   Network diagram of applying auto detect to VRRP

 

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Make sure there is a route between Switch A and Switch C, Switch C and 
Switch E, Switch B and Switch D, and Switch D and Switch E.

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Create VRRP group 1 containing Switch A and Switch B, and set the virtual IP 
address of the group to 10.1.1.10/24.

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Normally, data of Host A is forwarded to Host B through Switch A.

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If the link between Switch C and Switch E fails, Switch B becomes the master 
of VRRP group 1. Data of Host A is forwarded to Host B through Switch B.

Configure IP addresses for the interfaces according to Figure 20. The configuration 
procedure is omitted here.

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Configure Switch A

# Create detected group 9.

<SwitchA> system-view

[SwitchA] detect-group 9 

# Detect the reachability of 10.1.4.2, with the next hop being 10.1.2.2, and the 
detecting number being 1.

[SwitchA-detect-group-9] detect-list 1 ip address 10.1.4.2 nexthop 10.1.2.2

[SwitchA-detect-group-9] quit 

Host A

Switch A

Switch B

Virtual IP address: 

10.1.1.10/24

Vlan- int2

10.1.1 .1/ 24

Vlan- int2

10.1.1.2/24

10.1. 1. 3/24

Vlan-int3

10.1.2.1/24

Vlan-int3

10.1.3.1/24

Vlan-int3

10 .1 .3.2/24

Vlan-int3

10 .1 .2.2/24

Switch C

Switch D

Switch E

10.1.4.1/24

10.1.4.2/24

10.1.5.1/24

10.1.5.2/24

Host B

20 .1.1.1/24

20.1.1.2/24

Switch 5500

Release V03.02.04 

All versions 

Switch 5500G

Release V03.02.04 

All versions 

Switch 4500

Release V03.03.00 

All versions