3com S7906E Guide De Référence

 

4-4 

None 

Use the dhcp-snooping information enable command to configure DHCP snooping to support Option 

82. 

Use the undo dhcp-snooping information enable command to disable this function. 

By default, DHCP snooping does not support Option 82. 

# Configure DHCP snooping to support Option 82. 

<Sysname> system-view 

[Sysname] interface gigabitethernet2/0/1 

[Sysname-GigabitEthernet2/0/1] dhcp-snooping information enable 

dhcp-snooping information format { normal | verbose [ node-identifier { mac | sysname  | 

user-defined node-identifier } ] } 

undo dhcp-snooping information format [ verbose node-identifier ] 

Ethernet port view 

2: System level 

normal: Specifies the normal padding format. 

verbose: Specifies the verbose padding format. 

node-identifier { mac | sysname | user-defined node-identifier }: Specifies access node identifier. By 

default, the node MAC address is used as the node identifier. 

z 

mac indicates using MAC address as the node identifier. 

z 

sysname indicates using the device name of a node as the node identifier. 

z 

user-defined node-identifier indicates using a specified character string as the node identifier, in 

which node-identifier is a string of 1 to 50 characters. 

Use the dhcp-snooping information format command to specify the padding format for Option 82. 

Use the undo dhcp-snooping information format command to restore the default. 

By default, the padding format for Option 82 is normal. 

Note that when you use the undo dhcp-snooping information format command, if the verbose 

node-identifier argument is not specified, the padding format will be restored to normal; if the verbose