Reference Guide

Security | 1387
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 binding
c s
Create a static entry in the DHCP binding table.
Syntax
[no] ip dhcp snooping binding mac address vlan-id vlan-id ip ip-address interface type slot/port
lease number
Parameters
Version 8.3.19.0 Introduced on S4820T
Version 8.3.7.0 Introduced on S4810
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 to 21600
Version 8.3.19.0 Introduced on S4820T
Version 8.3.7.0 Introduced on S4810
Version 7.8.1.0 Introduced on C-Series and S-Series
mac address
Enter the keyword mac followed by the MAC address of the host to which
the server is leasing the IP address.
vlan-id vlan-id Enter the keyword vlan-id followed by the VLAN to which the host
belongs.
Range: 2 to 4094
ip ip-address Enter the keyword ip followed by the IP address that the server is leasing.