Balanced hybrid

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Balanced Hybrid is a term introduced by the manufacturer Cisco for a class of routing protocols.

The basis of the categorization is the working method of the Enhanced Interior Gateway Routing Protocol (EIGRP) , which uses the Diffusing Update Algorithm (DUAL) for route calculation. So far there is no other protocol apart from EIGRP that is classified as a balanced hybrid protocol. The name is based on the fact that EIGRP has features of both distance vector and link-state routing methods.

In contrast to most distance vector methods, updates of the routing tables are not carried out periodically, but event-controlled, for example caused by topology changes. In addition, more topology information is exchanged and adapted metrics are used.

However, the full network topology or the computationally expensive Dijkstra algorithm are not required to calculate loop-free routes.