Cabling The Tie that Binds
Intro Types Cable Specs Connectivity
Types Unshielded Twisted Pair (UTP) Cable Shielded Twisted Pair (STP) Cable Coaxial Cable Fiber Optic Cable Wireless LANs
Unshielded Twisted Pair Four pairs of wires Twisting helps to eliminate interference More twists less interference More twists = higher cost Six categories 1 1 Mbps Voice Only (Telephone Wire) 2 4 Mbps LocalTalk & Telephone (Rarely used) 3 16 Mbps 10BaseT Ethernet 4 20 Mbps Token Ring (Rarely used) 5 100 Mbps (2 pair) 100BaseT Ethernet 1000 Mbps (4 pair) Gigabit Ethernet 5e 1,000 Mbps 6 10,000 Mbps
Shielded Twisted Pair Individual pairs and complete wire shielded Reduces interference Extends distance allowed between connections Both UTP and STP use RJ-45 connectors
Cabling Order A Side WG, G, WO, B, WB, O, WBr, Br (Straight Thru) WG, G, WO, B, WB, O, WBr, Br (Cross-over) WO, O, WG, B, WB, G, WBr, Br B Side WO, O, WG, B, WB, G, WBr, Br (Straight Thru) WO, O, WG, B, WB, G, WBr, Br (Cross-over) WG, G, WO, B, WB, O, WBr, Br
Coaxial Cable BNC connections Thicknet or 10Base5 TV Cable Longer runs Two types Thinnet or 10Base2 Longest run is 200 meters Thicknet or 10Base5 Longest run is 500 meters Extra thick coating BNC connections
Fiber Optic Center glass surrounded by protective material 10BaseF Single-mode Longer runs Multi-mode Larger or the two types
Cable Specs Specification Cable Type Speed 10BaseT Unshielded Twisted Pair Cat3 (3) UTP/100M/10Mb/S 10Base2 Thin Coaxial Coax/185M/10Mb/S 10Base5 Thick Coaxial Coax/500M/10Mb/S 100BaseT Cat3(4) UTP/100M/100Mb/S 100BaseFX Fiber Optic Fiber/300M/100Mb/S 1000BaseT Cat5 UTP/100M/1000Mb/S 10000BaseFX Fiber/300M/10000Mb/S 10000BaseSX Single-Mode Fiber 2 Fibers/25Miles/10000Mb/S
Wireless Line-of-Sight Scattered broadcast Speeds and coverage Standard Max Speed Typical Range 802.11a 54 Mbps 150 feet 802.11b 11 Mbps 300 feet 802.11g 802.11n 100 Mbps 300+ feet
Wireless (cont.) Advantages Disadvantages Mobility Fast Setup Cost Expandability Disadvantages Security Interference Inconsistent Speed