Dhcp Relay Information Format - 3Com S7906E Command Reference Manual

[Sysname-Vlan-interface1] dhcp relay information enable

dhcp relay information format

Syntax
dhcp relay information format { normal | verbose [ node-identifier { mac | sysname | user-defined
node-identifier } ] }
undo dhcp relay information format [ verbose node-identifier ]
View
Interface view
Default Level
2: System level
Parameters
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.
mac indicates using MAC address as the node identifier.
sysname indicates using the device name of a node as the node identifier.
user-defined node-identifier indicates using a specified character string as the node identifier, in
which node-identifier is a string with 1 to 50 characters.
Description
Use the dhcp relay information format command to specify a padding format for Option 82.
Use the undo dhcp relay information format command to restore the default padding format.
The Option 82 padding format defaults to normal.
Using the undo dhcp relay information format command without the keyword verbose
node-identifier restores the default normal padding format, or with the keyword verbose
node-identifier restores the mac mode of the verbose padding format.
If configuring the handling strategy of the DHCP relay agent as replace, you need to configure a
padding format of Option 82. If the handling strategy is keep or drop, you need not configure any
padding format.
If sub-option 1 (node identifier) of Option 82 is padded with the device name (sysname) of a node,
the device name must contain no spaces. Otherwise, the DHCP relay agent will drop the message.
Examples
# Specify the verbose padding format for Option 82.
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