CLI Guide

ip dhcp source-address-validation
Enable IP source guard.
Syntax
[no] ip dhcp source-address-validation
Defaults Disabled.
Command Modes INTERFACE
Supported Modes Full–Switch
Command History
Version Description
9.9(0.0) Introduced on the FN IOM.
8.3.16.1 Introduced on the MXL 10/40GbE Switch IO Module.
ip dhcp snooping vlan
Enable DHCP Snooping on one or more VLANs.
Syntax
[no] ip dhcp snooping vlan name
Parameters
name Enter the name of a VLAN on which to enable DHCP
Snooping.
Defaults Disabled.
Command Modes CONFIGURATION
Supported Modes Full–Switch
Command History
Version Description
9.9(0.0) Introduced on the FN IOM.
8.3.16.1 Introduced on the MXL 10/40GbE Switch IO Module.
Usage Information When enabled, the system begins creating entries in the binding table for the
specified VLANs.
NOTE: Learning only happens if there is a trusted port in the VLAN.
Related
Commands
ip dhcp snooping trust — configures an interface as trusted.
show ip dhcp snooping
Display the contents of the DHCP binding table.
Syntax
show ip dhcp snooping binding
Defaults none
Security
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