H3C S3100 8C SI Operation Manual page 480

Operation Manual – DHCP
H3C S3100 Series Ethernet Switches
I. Enable DHCP-snooping Option 82 support
Table 2-7 Enable DHCP-snooping Option 82 support
Enter system view
Enable DHCP-snooping
Option 82 support
II. Configure a handling policy for DHCP packets with Option 82
Table 2-8 Configure a handling policy for DHCP packets with Option 82
Enter system view
Configure a global
handling policy for
requests that contain
Option 82
Enter Ethernet port view
Configure a handling
policy for requests that
contain Option 82
received on the specified
interface
Note:
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.
III. Configure the storage format of Option 82
S3100-EI Series Ethernet Switches support the HEX or ASCII format for the Option 82
field.
Operation
system-view
dhcp-snooping
information enable
Operation
system-view
dhcp-snooping
information strategy
{ drop | keep | replace }
interface interface-type
interface-number
dhcp-snooping
information strategy
{ drop | keep | replace }
Chapter 2 DHCP Snooping Configuration
Command
Command
2-10
Description
—
Required
By default, DHCP
snooping Option 82
support is disabled.
Description
Optional
Optional
The default handling
policy is replace.
—
Optional
The default policy is
replace.