This document discusses simulating failsafe protocols like GLBP and FHRP to provide load balancing and redundancy. It provides an overview of GLBP, explaining that it uses Active Virtual Gateways and Active Virtual Forwarders to assign routers as primary and secondary access to the virtual gateway IP. It also discusses FHRP protocols like HSRP and VRRP, noting that HSRP is Cisco proprietary while VRRP is an IETF standard. The document goes on to describe configuring GLBP across three routers to demonstrate how traffic would be load balanced and how a backup router would take over if the primary fails.