Dell PowerConnect 3548 Command Line Interface Guide - Page 156

Syntax • ip dhcp snooping verify • no ip dhcp snooping verify Default Configuration The default configuration is that the switch verifies the source MAC address in a DHCP packet that is received on untrusted ports matches the client hardware address in the packet. Command Mode Global Configuration mode. User Guidelines There are no user guidelines for this command. Example The following example configures a switch to verify on an untrusted port that the source MAC address in a DHCP packet matches the client hardware address. console(config)#ip dhcp snooping verify 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 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. 156 DHCP Snooping