DHCP Relay Commands
OmniSwitch 6250 CLI Reference Guide November 2009 page 32-25
ip helper dhcp-snooping option-82 format
Configures the type of information that is inserted in both the Circuit ID and Remote ID suboption fields
of the Option-82 field.
ip helper dhcp-snooping option-82 data-insertion format [base-mac | system-name | user-string
string]
Syntax Definitions
base-mac The base MAC address of the switch.
system-name The system name of the switch.
string A user-defined text string up to 64 characters.
Defaults
Platforms Supported
OmniSwitch 6250
Usage Guidelines
• The string parameter specifies user-defined information to insert into the Circuit ID and Remote ID
fields.
• When entering a string for user-defined Option-82 information, quotes are required around ambiguous
characters, such as hex characters, spaces, etc, so they are interpreted as text. For example, the string
“Building B Server” requires quotes because of the spaces between the words.
• The data specified with this command is added to the Circuit ID and Remote ID fields only when
DHCP Option-82 data insertion is enabled for the switch.
• When DHCP Snooping is enabled at the switch level, Option-82 data insertion is enabled by default.
Examples
-> ip helper dhcp-snooping option-82 format user-string “Building B Server”
-> ip helper dhcp-snooping option-82 format system-name
-> ip helper dhcp-snooping option-82 format base-mac
Release History
Release 6.6.1; command was introduced.
parameter value
base-mac | system-name |
user-string string
base-mac
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