Reference Guide

Commands to Configure Secure DHCP
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.
arp inspection
Enable dynamic arp inspection (DAI) on a VLAN.
S5000
Syntax
arp inspection
Defaults Disabled
Command
Modes
INTERFACE VLAN
Command
History
Version 9.0(1.3) Introduced on the S5000.
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.
S5000
Syntax
arp inspection-trust
Defaults Disabled
Command
Modes
• INTERFACE
• INTERFACE PORT-CHANNEL
Command
History
Version 9.0(1.3) Introduced on the S5000.
Related
Commands
arp inspection – enables dynamic ARP inspection on a VLAN.
446
Dynamic Host Configuration Protocol (DHCP)