Routers connect two or more logical subnets, which do not necessarily map one-to-one to the physical interfaces of the router. The term "layer 3 switch" often is used interchangeably with router, but switch is a general term without a rigorous technical definition. In marketing usage, it is generally optimized for Ethernet LAN interfaces and may not have other physical interface types. In comparison a network hub does not do any routing, instead every packet it receives on one network line gets forwarded to the other network lines.
Cisco is the world largest supplier of network routers as well as the most known.
 Lucent Stinger STGR-CM-IP2100-F  US $4,280.00
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 Lucent Stinger STGR-LPM2-72 300426673 0800-0998-072 US $490.00
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 Cisco 2621XM Router 96D/32F, WIC 1DSU T1 Module US $76.00
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 Lucent Stinger STGR-LIM-A2P-48-HB 300720125 US $3,620.00
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 Cisco router 3845 power supply US $70.00
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 Cisco 3745 3745-IO-2FE Access Router 128D/32F 12.2 PS US $159.00
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 Cisco 2600 Series Modular Access Router 2621 US $79.99
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 CISCO 4000 Ethernet/Serial Router with 3 Modules US $56.95
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 CISCO VG200 VOICE GATEWAY ROUTER VOIP US $65.00
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