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Supernetwork
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==Protocol requirements== Supernetting requires the use of routing protocols that support [[Classless Inter-Domain Routing]] (CIDR). [[Interior Gateway Routing Protocol]], [[Exterior Gateway Protocol]] and version 1 of the [[Routing Information Protocol]] (RIPv1) assume [[classful addressing]], and therefore cannot transmit the subnet mask information required for supernetting. [[Enhanced Interior Gateway Routing Protocol]] (EIGRP) supports CIDR. By default, EIGRP summarizes the routes within the routing table and forwards these summarized routes to its peers. Other routing protocols with CIDR support include RIPv2, [[Open Shortest Path First]], IS-IS and [[Border Gateway Protocol]].
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