router1Routers 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.

CISCO PIX 515 UR 2FE INTERFACE 256D Memory
CISCO PIX 515 UR 2FE INTERFACE 256D Memory
   US $369.00
Adtran Atlas 550 3x 8 FXS 1x Nx 56 64 1x T1 1200305L1
Adtran Atlas 550 3x 8 FXS 1x Nx 56 64 1x T1 1200305L1
   US $195.00
CISCO 2610XM 64M 32F
CISCO 2610XM 64M 32F
   US $16.50
Cisco 2811 Integrated Services Router Advanced K9 IOS
Cisco 2811 Integrated Services Router Advanced K9 IOS
   US $985.00
NEW Linksys Cisco SPA2102 VoIP Phone Adapter Router
NEW Linksys Cisco SPA2102 VoIP Phone Adapter Router
   US $52.95
Cisco NMD 36 ESW with 2GE
Cisco NMD 36 ESW with 2GE
   US $523.88
Cisco WS X4148 RJ45V for Catalyst 4000 or 4500
Cisco WS X4148 RJ45V for Catalyst 4000 or 4500
   US $136.67
New LINKSYS VPN ROUTER W 4 PORT SWITCH Retail RV042
New LINKSYS VPN ROUTER W 4 PORT SWITCH Retail RV042
   US $164.99
Cisco CSS 11155 256M AC Content Services Switch
Cisco CSS 11155 256M AC Content Services Switch
   US $359.88
Cisco 1750 Modular Access Router Used Good Condition
Cisco 1750 Modular Access Router Used Good Condition
   US $44.95
Cisco CCNA CCNP 3 Router 3 Switch Lab Kit 12321
Cisco CCNA CCNP 3 Router 3 Switch Lab Kit 12321
   US $514.99
Cisco 3600 3620 Router 64D 16F Serial 2 Ethernet Ports
Cisco 3600 3620 Router 64D 16F Serial 2 Ethernet Ports
   US $159.99
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