Gratuitous ARP
Gratuitous Abode Resolution Protocol (gARP) is an unsolicited ARP advertisement absolute the IP abode of the applicant host and
the router's MAC address. A Cisco router will accelerate out a gARP bulletin back a applicant connects and negotiates an abode over PPP connection. This manual occurs alike back the applicant receives the abode from a bounded abode pool.
Gratuitous ARP is enabled by absence on all interfaces. To attenuate gARP, use the no ip gratuitous-arps command from the global
configuration mode.