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Command Modes
INTERFACE
Default
Untrusted
Command
Version 7.8.1.0
History
ip dhcp source-address-validation
c s
Enable IP Source Guard.
Syntax
[no] ip dhcp source-address-validation
Command Modes
INTERFACE
Default
Disabled
Command
Version 7.8.1.0
History
ip dhcp snooping vlan
c s
Enable DHCP Snooping on one or more VLANs.
Syntax
[no] ip dhcp snooping vlan name
Parameters
name
Command Modes
CONFIGURATION
Default
Disabled
Command
Version 7.8.1.0
History
Usage
When enabled the system begins creating entries in the binding table for the specified VLAN(s). Note
Information
that learning only happens if there is a trusted port in the VLAN.
Related
ip dhcp snooping trust
Commands
show ip dhcp snooping
c s
Display the contents of the DHCP binding table.
Syntax
show ip dhcp snooping binding
Command Modes
EXEC
EXEC Privilege
Introduced on C-Series and S-Series
Introduced on C-Series and S-Series
Enter the name of a VLAN on which to enable DHCP Snooping.
Introduced on C-Series and S-Series
Configure an interface as trusted.
Security | 1335
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