H3C Technologies H3C S3600 Series Switches - Manual (Page 690)

4-7
Task Remarks
Configuring the remote ID sub-option Optional
Configuring the padding format for Option 82 Optional
Enabling DHCP-snooping Option 82 support
Follow these steps to enable DHCP-snooping Option 82 support:
To do… Use the command… Remarks
Enter system view system-view —
Enable DHCP-snooping Option
82 support dhcp-snooping information
enable Required
Disabled by default.
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
S3600 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.