Service Manual

ip dhcp source-address-validation
Enable IP source guard.
Syntax
[no] ip dhcp source-address-validation
Defaults Disabled.
Command Modes INTERFACE
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
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
Command Modes
• EXEC
• EXEC Privilege
1120 Security