HP 1910 User Manual

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Table 99 Handling strategy of DHCP snooping support for Option 82
If a DHCP request has…
Handling
strate
gy
The DHCP snooping device…
Option 82
Drop Drop the message.
Keep Forward the message without changing Option 82.
Replace
Forward the message after replacing the original Option 82
with the Option 82 padded in normal format.
No Option 82 N/A
Forward the message after adding the Option 82 padded in
normal format.
Recommended configuration procedure
Ste
p
Remarks
1. Enabling DHCP snooping
(Required)
By default, DHCP snooping is disabled.
2. Configuring DHCP snooping
functions on an interface
(Required)
Specify an interface as trusted and configure DHCP snooping to support
Option 82.
By default, an interface is untrusted and DHCP snooping does not support
Option 82.
IMPORTANT:
You need to specify the ports connected to the authorized DHCP servers as
trusted to make sure that DHCP clients can obtain valid IP addresses. The
trusted port and the port connected to the DHCP client must be in the same
VLAN.
3. Displaying DHCP snooping
entries
(Optional)
Display clients' IP-to-MAC bindings recorded by DHCP snooping.
Enabling DHCP snooping
1. Select Network > DHCP from the navigation tree.
2. Click the DHCP Snooping tab to enter the DHCP snooping configuration page.
3. Select the Enable option next to DHCP Snooping to enable DHCP Snooping.

HP 1910 Specifications

General

Brand	HP
Model	1910
Category	Switch
Language	English