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Routable vs. Non-routable
Additionally, protocols may
be routable or non-routable. To understand what this
means, recall the description of a router from the chapter on
network devices: a router connects multiple networks
to create what is called an internetwork. A routable
protocol is capable of being passed from network to network.
A non-routable protocol is restricted to use only
on its LAN, and does not get passed to other networks by
a routing protocols running on a router (at OSI layer 3).
Generally, non-routable protocols
contain less protocol overhead and are thus more efficient
than routable protocols. The trade-off is that they can
only be used within a LAN environment.
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CertiGuide for Network+ (http://www.CertiGuide.com/netplus/) on CertiGuide.com
Version 1.0 - Version Date: November 7, 2004
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