1.3. Virtual Router Redundancy

1.3.1. Aspects of VRRP

Virtual Router Redundancy Protocol (VRRP)—the very subject of this book—deals with some specific problems related to the availability of network services by defining a failover mechanism based on the redundancy of some network elements, more specifically routers. VRRP is not a forwarding protocol; its purpose is not the transfer of data, but rather to ensure that data can be transferred even under certain failure conditions. Can VRRP then be considered an embedded management function, since it has a fault management role? Conventionally, management functions are associated with special protocols (such as SNMP) and with some specialized pieces of software (management agents, management applications, ...

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