Recommended Configuration Procedure; Enabling Dhcp Snooping - HP 1910 User Manual

Table 99 Handling strategy of DHCP snooping support for Option 82
If a DHCP request has...
Option 82
No Option 82

Recommended configuration procedure

Step
1.

Enabling DHCP snooping

2. Configuring DHCP snooping
functions on an interface
3. Displaying DHCP snooping
entries
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.
Handling
The DHCP snooping device...
strategy
Drop Drop the message.
Keep Forward the message without changing Option 82.
Forward the message after replacing the original Option 82
Replace
with the Option 82 padded in normal format.
Forward the message after adding the Option 82 padded in
N/A
normal format.
Remarks
(Required)
By default, DHCP snooping is disabled.
(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.
(Optional)
Display clients' IP-to-MAC bindings recorded by DHCP snooping.
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