First Hop Redundancy Protocols

First Hop Redundancy Protocols are the Layer 3 answer to resiliency. It adds multiple Layer 3 paths to allow devices to reach their destinations.

First Hop Redundancy Protocols by creating a virtual gateway for the network that is shared between Layer 3 devices. There are many different protocols but three are relevant for the CCNP exam:

  • Hot Standby Router Protocol (HSRP)
  • Virtual Router Redundancy Protocol (VRRP)
  • Gateway Load Balancing Protocol (GLBP)



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