Concept Guide
Supported Modes Full–Switch
Command History
Version Description
9.13(0.0) Enhanced the command to map multiple IP addresses to one MAC address. Enhanced to
support DHCP snooping in a VLT setup.
9.9(0.0) Introduced on the FN IOM.
8.3.16.1 Introduced on the MXL 10/40GbE Switch IO Module.
Usage Instructions
You can map multiple IP addresses to the same MAC address.
Related Commands show ip dhcp snooping — displays the contents of the DHCP binding table.
ip dhcp snooping database renew
Renew the binding table.
Syntax
ip dhcp snooping database renew
Defaults none
Command Modes
• EXEC
• EXEC Privilege
Supported Modes Full–Switch
Command History
Version Description
9.9(0.0) Introduced on the FN IOM.
9.7(0.0) Introduced on the MXL 10/40GbE Switch IO Module.
ip dhcp snooping trust
Congure an interface as trusted.
Syntax
[no] ip dhcp snooping trust
Defaults Untrusted
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.
462 Dynamic Host Conguration Protocol