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Command
History
Version Description
9.9(0.0) Introduced on the FN IOM.
9.7(0.0) Introduced on the MXL.
ip dhcp source-address-validation
Enable the IP Source Guard.
Syntax
[no] ip dhcp source-address-validation [ipmac]
Parameters
ipmac Enable IP+MAC 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.
Usage
Information
Allocate at least one FP block to ipmacacl before you can enable IP+MAC Source Address Validation.
1. Use the cam-acl l2acl command from CONFIGURATION mode.
2. Save the running-config to the startup-config.
3. Reload the system.
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.
Dynamic Host Configuration Protocol 415