Netgear FVS318v3 사용자 설명서

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Reference Manual for the ProSafe VPN Firewall FVS318v3
Network, Routing, and Firewall Basics
B-13
January 2005
Inside Twisted Pair Cables
For two devices to communicate, the transmitter of each device must be connected to the receiver 
of the other device. The crossover function is usually implemented internally as part of the 
circuitry in the device. Computers and workstation adapter cards are usually media-dependent 
interface ports, called MDI or uplink ports. Most repeaters and switch ports are configured as 
media-dependent interfaces with built-in crossover ports, called MDI-X or normal ports.  Auto 
Uplink technology automatically senses which connection, MDI or MDI-X, is needed and makes 
the right connection.
Figure B-4:  Straight-through twisted-pair cable
 illustrates crossover twisted pair cable.
Figure B-5:  Crossover twisted-pair cable