Dhcp Snooping Configuration Task List; Configuring Dhcp Snooping Basic Functions; Configuration Guidelines - HP 10500 Series Configuration Manual

If a DHCP request
has...
no Option 82
The handling strategy and padding format for Option 82 on the DHCP snooping device are the same as
those on the relay agent.

DHCP snooping configuration task list

Task

Configuring DHCP snooping basic functions

Configuring DHCP snooping to support Option 82
Configuring DHCP snooping entries backup
Enabling DHCP starvation attack protection
Enabling DHCP-REQUEST message attack protection
Configuring DHCP packet rate limit
Configuring DHCP snooping basic functions

Configuration guidelines

Follow these guidelines to configure DHCP snooping basic functions:
Specify the ports connected to authorized DHCP servers as trusted to make sure DHCP clients can
•
obtain valid IP addresses. The trusted ports and the ports connected to DHCP clients must be in the
same VLAN.
You can specify Layer 2 Ethernet interfaces and Layer 2 aggregate interfaces as trusted ports. For
•
more information about aggregate interfaces, see Layer 2—LAN Switching Configuration Guide.
Handling
Padding format
strategy
normal
Replace verbose
user-defined
N/A normal
N/A verbose
N/A user-defined
75
The DHCP snooping device will...
Forward the message after replacing the
original Option 82 with the Option 82 padded
in normal format.
Forward the message after replacing the
original Option 82 with the Option 82 padded
in verbose format.
Forward the message after replacing the
original Option 82 with the user-defined
Option 82.
Forward the message after adding the Option
82 padded in normal format.
Forward the message after adding the Option
82 padded in verbose format.
Forward the message after adding the
user-defined Option 82.
Remarks
Required.
Optional.
Optional.
Optional.
Optional.
Optional.