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9 Babel

Babel is an interior gateway protocol that is suitable both for wired networks and for wireless mesh networks. Babel has been described as “RIP on speed” — it is based on the same principles as RIP, but includes a number of refinements that make it react much faster to topology changes without ever counting to infinity, and allow it to perform reliable link quality estimation on wireless links. Babel is a double-stack routing protocol, meaning that a single Babel instance is able to perform routing for both IPv4 and IPv6.

Quagga implements Babel as described in RFC6126.