3Com Switch 7750 Configuration Guide

DHCP Snooping Configuration 629
Enabling DHCP-snooping Option 82 support
Configuring a handling policy for DHCP packets with Option 82
n
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.
Configure the circuit ID sub-option Optional “Configuring DHCP
Snooping to
Support Option 82”
on page 628
“Configuring the
circuit ID
sub-option” on
page 630
Configure the remote ID sub-option Optional “Configuring DHCP
Snooping to
Support Option 82”
on page 628
“Configuring the
remote ID
sub-option” on
page 630
Configure the padding format for Option 82 Optional “Configuring DHCP
Snooping to
Support Option 82”
on page 628
“Configuring the
padding format for
Option 82” on page
631
Table 499 Enable DHCP-snooping Option 82 support
Operation Command Description
Enter system view system-view -
Enable DHCP-snooping
Option 82 support
dhcp-snooping information
enable
Required
Disabled by default.
Table 500 Configure a handling policy for DHCP packets with Option 82
Operation Command Description
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.
Table 498 DHCP-snooping Option 82 support configuration tasks
Configuration task Description Related section