HP ProCurve J8766A Release Note page 40

Enhancements
Release L.10.09 Enhancements
ProCurve(config)# dhcp-snooping
Use the no form of the command to disable DHCP snooping.
Syntax: [no] dhcp-snooping [authorized-server | database | option | trust | verify |
vlan]
authorized server: Enter the IP address of a trusted DHCP
server. If no authorized servers are configured, all DHCP
server addresses are considered valid.
Maximum: 20 authorized servers
database:
enter a URL in the format tftp://ip-addr/ascii-string. The
maximum number of characters for the URL is 63.
option
client packets that are being forwarded out trusted ports.
The default is yes
trust
on trusted ports are forwarded. Default: untrusted.
verify
hardware address field and the source MAC address must
be the same for packets received on untrusted ports or the
packet is dropped. Default: Yes
vlan
must be enabled already. Default: No
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To configure a location for the lease database,
Add relay information option (Option 82) to DHCP
:
, add relay information.
Configure trusted ports. Only server packets received
:
: Enables DHCP packet validation. The DHCP client
: Enable DHCP snooping on a vlan. DHCP snooping