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# Router

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A router is a device that determines the next network point to which a packet should be forwarded toward its destination. A router must be connected to at least two networks.

A router creates and/or maintains a table, called a routing table that stores the best routes to certain network destinations and the metrics associated with those routes.

There are several manufacturers of routers including

- [Ascend Communications]
- [Cabletron]
- [Cisco]
- [3Com]
- [Pivotal Networking]
- [Juniper Networks]

A routing protocol is the method by which a router determines the best path to the destination. Here are some routing protocols.

- BGP (Border Gateway Protocol)
- IGRP/EIGRP (Interior Gateway Routing Protocol/ Enhanced IGRP)
- OSPF (Open Shortest Path First)
- RIP (Routing Information Protocol)

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Last edited July 30, 2001 3:37 pm (diff)
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