Reference Guide

432 DHCP
Global Parameters
Use the Global Parameters page to:
• Enable/disable DHCP snooping globally.
• Determine whether to forward or filter DHCP packets received from
untrusted interfaces, whose source MAC address and the DHCP client
MAC address do not match.
• Determine whether to forward or filter DHCP packets, received from
untrusted interfaces, with option-82 information.
• Set Binding database update interval.
To configure DHCP snooping on the device:
1
Click Switching > DHCP Snooping > Global Parameters in the tree view
to display the
Global Parameters page.
2 Enable/disable DHCP snooping on the device in the DHCP Snooping
Status
field.
3 If DHCP snooping is enabled, enter the fields:
–
Option 82 Passthrough — Enable/disable whether to forward (enable)
or filter (disable) DHCP packets, received from untrusted interfaces,
with option-82 information.
–
Verify MAC Address — Enable/disable MAC addresses verification.
This determines whether to forward (enable) or filter (disable) DHCP
packets received from untrusted interfaces, whose source MAC
address and the DHCP client MAC address do not match.
–
Save Binding Database to File — Enable/disable saving the DHCP
snooping database to flash memory.
–
Save Binding Database Internal (600-86400) — Enter how often, in
seconds, the Binding database is updated.