CymbreStarkey119
From Achewiki
In this activity you will learn how to build a Category 5 (CAT 5) Unshielded Twisted Pair (UTP) Ethernet network patch cable (or patch cord) and test it for good connections and correct pinouts (correct color wires on the correct pin). This will be 4-pair (8 wires) “straight through” cable, which means that the color of wire on pin 1 on one end of the cable will be the same as pin 1 on the other end. Pin 2 will be the same as pin 2, and so on. It will be wired to EIA/TIA 568-B or A standards for 10base-T Ethernet, which determines what color wire is on each pin. T568-B (also called AT&T specification) is more common, but many installations are also wired to T568-A (also called ISDN). This patch cable will conform to the structured cabling standards and is considered to be part of the “horizontal” cabling, which is limited to 99 meters total between workstation and hub or switch. It can be used in a workstation NIC to the wall plate data jack, or it can be used in the wiring closet to connect the patch panel (horizontal cross connect) to an Ethernet hub or switch. Patch cables are wired straight thru because the cable from the workstation to the hub or switch is normally crossed over automatically at the switch or hub. Note that the ports on most hubs have an X next to them. This means the send and receive pairs will be crossed when the cabling reaches the switch. The pinouts will be T568-B, and all 8 conductors (wires) should be terminated with RJ45 modular connectors (only 4 of the 8 wires are used for 10/100Base-T Ethernet; all 8 are used for 1000Base-T Ethernet).Also check out Roll Over Cable
Network Cable Basics Ethernet cables, such as CAT5 and CAT6 cabling, actually contain multiple wires inside the cable itself. These wires are commonly twisted into pairs inside the cable and then secured, at the ends of the cable, to connectors. The wires can be secured to the connectors in a variety of patterns.
Rollover Cable Pinout The pattern in which the color coded wires of a network cable are secured to a connector is called a "pinout." The wires of a rollover network cable are secured to the cable's connectors in a pattern that is the opposite on each end of the cable. This means that the sequence of the wires in one connector are mirrored (reversed) in the other connector.
Rollover Pinout Significance Having wires that are connected in a mirror sequence enables communication between identical ports without any need for internal switching.
Rollover Cable Use A rollover cable is most commonly used for connecting a computer to a router's console port. This is generally done by connecting the rollover cable's RJ45 connector to the router and connecting the other side to a DB9 or DB25 adapter. This adapter is compatible with a computer's COM port.
Names And Appearances A rollover cable is usually a flat network cable with RJ45 connectors at each side. The cable is usually a light blue color. A rollover cable is also called a Cisco console cable since consoling into Cisco routers is the primary purpose for which rollover cables are used.
