Allied Telesis AT-S95 CLI - Manual (Page 89)

DHCP Snooping Commands
Page 77
User Guidelines
There are no user guidelines for this command.
Example
The following example configures the switch to verify on an untrusted port that the source MAC address in a
DHCP packet matches the client hardware address
ip dhcp snooping database
The ip dhcp snooping database Global Configuration mode command configures the DHCP snooping binding
file. Use the no form of this command to delete the binding file.
Syntax
ip dhcp snooping database
no ip dhcp snooping database
Parameters
This command has no arguments or keywords.
Default Configuration
The URL is not defined.
Command Mode
Global Configuration mode
User Guidelines
To ensure that the lease time in the database is accurate, Simple Network Time Protocol (SNTP) is enabled and
configured.
The switch writes binding changes to the binding file only when the switch system clock is synchronized with
SNTP.
Example
.The following example configures the DHCP snooping binding file.
ip dhcp snooping database update-freq
The ip dhcp snooping database update-freq Global Configuration mode command configures the update
frequency of the DHCP snooping binding file. Use the no form of this command to return to default.
Syntax
ip dhcp snooping database update-freq seconds
Console(config) #ip dhcp snooping verify
Console(config)# ip dhcp snooping database