Deployment Guide

Security | 1367
ip dhcp snooping
c s
Enable DHCP Snooping globally.
Syntax
[no] ip dhcp snooping
Command Modes
CONFIGURATION
Default
Disabled
Command
History
Usage
Information
When enabled, no learning takes place until snooping is enabled on a VLAN. Upon disabling DHCP
Snooping the binding table is deleted, and Option 82, IP Source Guard, and Dynamic ARP Inspection
are disabled.
Related
Commands
ip dhcp snooping database
c s
Delay writing the binding table for a specified time.
Syntax
ip dhcp snooping database write-delay minutes
Parameters
Command Modes
CONFIGURATION
Default
None
Command
History
ip dhcp snooping database renew
c s
Renew the binding table.
Syntax
ip dhcp snooping database renew
Command Modes
EXEC
EXEC Privilege
Default
None
Command
History
Version 7.8.1.0 Introduced on C-Series and S-Series
ip dhcp snooping vlan Enable DHCP Snooping on one or more VLANs.
minutes
Range: 5-21600
Version 7.8.1.0 Introduced on C-Series and S-Series
Version 7.8.1.0 Introduced on C-Series and S-Series