Technical Documentation

Enabling a Trusted DHCP Server (CLI Procedure)

You can configure any interface on the EX Series switch that connects to a DHCP server as a trusted interface (port). Configuring a DHCP server on a trusted interface protects against rogue DHCP servers sending leases.

You configure a trusted DHCP server on an interface, not on a VLAN. By default, all access interfaces are untrusted and all trunk interfaces are trusted.

To configure a trusted interface for a DHCP server by using the CLI (here, the interface is ge-0/0/8):

[edit ethernet-switching-options secure-access port]
user@switch# set interface ge–0/0/8 dhcp-trusted

Published: 2010-04-05