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Configuring a handling policy for DHCP packets with Option 82
Follow these steps to configure a handling policy for DHCP packets with Option 82:
To do… Use the command… Remarks
Enter system view
system-view
—
Configure a global handling
policy for requests that contain
Option 82
dhcp-snooping information
strategy { drop | keep |
replace }
Optional
The default handling policy is
replace.
Enter Ethernet port view
interface interface-type
interface-number
—
Configure a handling policy for
requests that contain Option 82
received on the specified
interface
dhcp-snooping information
strategy { drop | keep |
replace }
Optional
The default policy is replace.
If a handling policy is configured on a port, this configuration overrides the globally configured handling
policy for requests received on this port, while the globally configured handling policy applies on those
ports where a handling policy is not natively configured.
Configuring the storage format of Option 82
S4500 Series Ethernet Switches support the HEX or ASCII format for the Option 82 field.
Follow these steps to configure a storage format for the Option 82 field:
To do… Use the command… Remarks
Enter system view
system-view
—
Configure a storage format
for the Option 82 field
dhcp-snooping information
format { hex | ascii }
Optional
By default, the format is hex.
The dhcp-snooping information format command applies only to the default content of the Option 82
field. If you have configured the circuit ID or remote ID sub-option, the format of the sub-option is ASCII,
instead of the one specified with the dhcp-snooping information format command.
Configuring the circuit ID sub-option
Follow these steps to configure the circuit ID sub-option:
To do… Use the command… Remarks
Enter system view
system-view
—