Tuesday, November 15, 2005

EIGRP does not support secondary addresses

EIGRP Frequently Asked Questions [IP Routing] - Cisco Systems: "Does EIGRP support secondary addresses?


A. EIGRP does support secondary addresses. Since EIGRP always sources data packets from the primary address, Cisco recommends that you configure all routers on a particular subnet with primary addresses that belong to the same subnet. Routers do not form EIGRP neighbors over secondary networks. Therefore, if all routers' primary IP addresses do not agree, problems can arise with neighbor adjacencies."

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