Configuring Dhcp Snooping Basic Functions - 3Com 4210G Series Configuration Manual

If a client's
requesting
message has...
Option 82
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.

Configuring DHCP Snooping Basic Functions

Follow these steps to configure DHCP snooping basic functions:
To do...
Enter system view
Enable DHCP snooping
Enter Ethernet interface view
Specify the port as trusted
Handling Padding
strategy format
Drop Random
Keep Random
normal
Replace verbose
user-defined
— normal
— verbose
— user-defined
Use the command...
system-view
dhcp-snooping
interface interface-type
interface-number
dhcp-snooping trust
[ no-user-binding ]
8-4
The DHCP snooping device will...
Drop the message.
Forward the message without changing
Option 82.
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
Disabled by default.
—
Required
Untrusted by default.