Ip Helper Enable; Show Ip Helper-Address - Dell Networking 7048 Reference Manual

console(config-if-vlan5)#ip helper-address 192.168.40.2 domain
console(config-if-vlan5)#exit
console(config)#interface 2/6
console(config-if-vlan6)#ip helper-address 192.168.23.1 162
console(config-if-vlan6)#ip helper-address discard dhcp

ip helper enable

Use the ip helper enable command to enable relay of UDP packets. To
disable relay of all UDP packets, use the "no" form of this command.
Syntax
ip helper enable
no ip helper enable
Default Configuration
IP helper is enabled by default.
Command Mode
Global Configuration mode.
User Guidelines
This command can be used to temporarily disable IP helper without deleting
all IP helper addresses.
This command replaces the bootpdhcprelay enable command, but affects not
only relay of DHCP packets, but also relay of any other protocols for which an
IP helper address has been configured.
Example
console(config)#ip helper enable

show ip helper-address

Use the show ip helper-address command to display the IP helper address
configuration.
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IP Helper/DHCP Relay Commands