Reference Guide

ip dhcp snooping trust
Configure an interface as trusted.
C-Series, E-Series, S-Series, Z-Series, S4810
Syntax
[no] ip dhcp snooping trust
Defaults Untrusted
Command Modes INTERFACE
Command History
Version 8.3.11.1 Introduced on the Z9000.
Version 8.3.7.0 Introduced on the S4810.
Version 8.3.1.0 Introduced on the E-Series.
Version 7.8.1.0 Introduced on the C-Series and S-Series.
ip dhcp source-address-validation
Enable the IP Source Guard.
C-Series, E-Series, S-Series, Z-Series, S4810
Syntax
[no] ip dhcp source-address-validation [ipmac]
Parameters
ipmac Enable IP+MAC Source Address Validation (Not available on the E-
Series).
Defaults Disabled
Command Modes INTERFACE
Command History
Version 8.3.11.1 Introduced on the Z9000.
Version 8.3.7.0 Introduced on the S4810.
Version 8.3.1.0 Introduced on the E-Series.
Version 8.2.1.0 Added the keyword ipmac.
Version 7.8.1.0 Introduced on the C-Series and S-Series.
Usage
Information
You must 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.
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