HP MSR2000/3000/4000 Router Series Layer 3 - IP Services Command Reference

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dhcp snooping trust
Use dhcp snooping trust to configure a port as a trusted port.
Use undo dhcp snooping trust to restore the default state of a port.
Syntax
dhcp snooping trust
undo dhcp snooping trust
Default
After you enable DHCP snooping, all ports are untrusted.
Views
Layer 2 Ethernet interface view
Predefined user roles
network-admin
Usage guidelines
Specify the ports facing the DHCP server as trusted ports and specify the other ports as untrusted ports
so DHCP clients can obtain valid IP addresses.
Examples
# Specify the Layer 2 Ethernet interface Ethernet 1/1 as a trusted port.
<Sysname> system-view
[Sysname] interface ethernet 1/1
[Sysname-Ethernet1/1] dhcp snooping trust
Related commands
display dhcp snooping trust
display dhcp snooping binding
Use display dhcp snooping binding to display DHCP snooping entries.
Syntax
display dhcp snooping binding [ ip ip-address [ vlan vlan-id ] ]
Views
Any view
Predefined user roles
network-admin
network-operator
Parameters
ip ip-address: Displays the DHCP snooping entry for the specified IP address.
vlan vlan-id: Specifies the VLAN ID where the IP address resides.