To use this command, you must enable the DHCP snooping feature
dhcp relay (ip-helper)
configuration example:
! enable the DHCP relay agent
switch# configure terminal
switch(config)#service dhcp snooping
switch(config)#ip dhcp snooping
switch(config)#interface ethernet 2/1
switch(config-if)#ip dhcp relay address 10.1.1.1
switch(config-if)#ip dhcp relay address 10.1.1.2
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