A CDE Definition
A communications protocol that contains a network address as well as a device address. It allows packets to be forwarded from one network to another. Examples of routable protocols are TCP/IP, IPX, AppleTalk, SNA, XNS and DECnet. Contrast with non-routable protocol. See routing protocol.
A formula used by routers to determine the appropriate path onto which data should be forwarded. The routing protocol also specifies how routers report changes and share information with the other routers in the network that they can reach. A routing protocol allows the network to dynamically adjust to changing conditions, otherwise all routing decisions have to be predetermined and remain static. See content-addressable memory, router, routing table, RIP, OSPF, IGRP, EGP and BGP.
A Routing Table
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