3com MSR 20-20 참조 매뉴얼
731
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.
access node identifier. By default, the node MAC address is used as the node
identifier.
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mac indicates using MAC address as the node identifier.
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sysname indicates using the device name of a node as the node identifier.
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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.
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.
for option 82.
Use the undo dhcp relay information format command to restore the
default padding format.
default padding format.
The option 82 padding format defaults to normal.
n
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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.
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.
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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.
need to configure a padding format of option 82. If the handling strategy is
keep or drop, you need not configure any padding format.
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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.
(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.