Extreme Networks 12800 Series manual Cable Distances, Media Types and Maximum Distances

Evaluating and Meeting Cable Requirements

NOTE

Kinks and sharp bends can destroy or impair the cable’s ability to convey light pulses accurately from one end of the cable to the other. Use care in dressing the optical fiber cables: provide satisfactory strain relief to support the cable and maintain an adequate bend radius at all cable turns, particularly where the cable connects to the I/O module.

Figure 24: Bend Radius for Fiber Optic Cable

Minimum

2-in. (5.08-cm)

radius

in 90∞ bend

90∞

Optical fiber cable

SPG_002

Cable Distances

Table 14 shows cable media types and maximum distances that support reliable transmission in accordance with international standards except where noted.

Table 14: Media Types and Maximum Distances

Standard	Media Type	Mhz•Km	Maximum Distance
		Rating	(Meters)
1000BASE-SX	50/125 μm multimode fiber	400	500
(850 nm optical	50/125 μm multimode fiber	500	550
window)
	62.5/125 μm multimode fiber	160	220
	62.5/125 μm multimode fiber	200	275
1000BASE-LX	50/125 μm multimode fiber	400	550
(1300 nm optical	50/125 μm multimode fiber	500	550
window)
	62.5/125 μm multimode fiber	500	550
	10/125 μm single-mode fiber	–	5,000
	10/125 μm single-mode fiber*	–	10,000
1000BASE-LX70	10/125 μm single-mode fiber	–	70,000
(1550 nm optical
window)
1000BASE-T	Category 5 and higher UTP cable	–	100
100BASE-TX	Category 5 and higher UTP cable	–	100
10BASE-T	Category 3 and higher UTP cable	–	100

*Proprietary to Extreme Networks. Connections between two Extreme Networks 1000BASE-LX interfaces that use 10/125 μm single-mode fiber can use a maximum distance of 10,000 meters.

BlackDiamond 12800 Series Switches Hardware Installation Guide 51