Gateway Load Balancing Protocol (GLBP) doesn’t just stop at providing us with a redundant
gateway; it’s a true load-balancing solution for routers. GLBP allows a maximum of
four routers in each forwarding group. By default, the active router directs the traffic from
hosts to each successive router in the group using a round-robin algorithm. The hosts are
directed to send their traffic toward a specific router by being given the MAC address of
the next router in line to be used.