DHCP Relay on the Nexus7000/NXOS Vs. IP Helper on the 6500/IoS Posted on May 20, 2013 by RouterSwitch Tech | 0 Comments IP helper (now DHCP relay) works differently on the Nexus 7000 than on the Cisco 6500. The N7K imposes a VACL to filter local DHCP broadcast traffic, under the assumption…Read more »