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Parameter

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-definednode-identifierindicates using a specified character string as the

 

node identifier, in which node-identifieris 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.

n

Using the undo dhcp relay information format command without the

keyword verbose node-identifierrestores the default normal padding

 

format, or with the keyword verbose node-identifierrestores 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.

Example

# Specify the verbose padding format for option 82.

 

<Sysname> system-view

 

[Sysname] interface ethernet 1/0

 

[Sysname-Ethernet1/0] dhcp relay information enable

 

[Sysname-Ethernet1/0] dhcp relay information strategy replace

 

[Sysname-Ethernet1/0] dhcp relay information format verbose

 

dhcp relay information strategy

Syntax

dhcp relay information strategy { drop keep replace }

 

undo dhcp relay information strategy

View

Interface view

Parameter

drop: Specifies to drop messages containing option 82.

 

keep: Specifies to forward messages containing option 82 without any change.

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3Com MSR 50, MSR 30 manual Dhcp relay information strategy drop keep replace, Undo dhcp relay information strategy