Configure Secure DHCP and DHCP Relay
DHCP, as defined by RFC 2131, provides no authentication or security mechanisms. Secure DHCP is a
suite of features that protects networks that use dynamic address allocation from spoofing and attacks,
including using the switch as a DHCP relay agent.

arp inspection

Enable dynamic arp inspection (DAI) on a VLAN.
Z9500
Syntax arp inspection
Defaults Disabled
Command
Modes
INTERFACE VLAN
Command
History This guide is platform-specific. For command information about other platforms,
refer to the relevant Dell Networking OS Command Line Reference Guide.
The following is a list of the Dell Networking OS version history for this command.
Version Description
9.2(1.0) Introduced on the Z9500.
8.3.19.0 Introduced on the S4820T.
8.3.11.1 Introduced on the Z9000.
8.3.7.0 Introduced on the S4810.
8.3.1.0 Introduced on the E-Series.
8.2.1.0 Introduced on the C-Series and S-Series.
Related
Commands
arp inspection-trust — specifies a port as trusted so that ARP frames are not
validated against the binding table.

arp inspection-trust

Specify a port as trusted so that ARP frames are not validated against the binding table.
Z9500
Syntax arp inspection-trust
Defaults Disabled
Command
Modes • INTERFACE
• INTERFACE PORT-CHANNEL
Dynamic Host Configuration Protocol (DHCP) 723