Installation manual

Labelling Cables
A reliable cable labeling system is essential when planning and installing a network.
Maintaining accurate records helps you to:
•
Relocate devices easily.
•
Make changes quickly.
•
Isolate faults in the distribution system.
•
Locate the opposite end of any cable.
•
Know the types of network devices that your cabling infrastructure can support.
Do the following to properly label your cables:
1 Identify cables by securely attaching labels to all cable ends.
2 Assign a unique block of sequential numbers to the group of cables that run between each pair of
equipment locations.
3 Assign a unique identification number to each equipment rack.
4 Identify all equipment locations by labeling the front panel of your Extreme Networks equipment
and other hardware.
5 Keep accurate and current cable identification records.
6 Post records near each equipment rack.
For each cable drop, include information about the cable source, destination, and jumper location.
Determining Cable Distances
Building and electrical codes vary depending on your location. The following tables show cable media
types and maximum distances that support reliable transmission in accordance with international
standards, except where noted.
The following table lists the Extreme Networks direct-attach cables.
Table 10: Fiber Media Types and Maximum Cable Distances
Standard Media Type Mhz•Km
Rating
Maximum Distance
1000BASE-SX
(850 nm optical window)
50/125 µm multimode fiber 400 500 meters
50/125 µm multimode fiber 500 550 meters
62.5/125 µm multimode fiber 160 220 meters
62.5/125 µm multimode fiber 200 275 meters
1000BASE-LX
(1300 nm optical window)
50/125 µm multimode fiber 400 550 meters
50/125 µm multimode fiber 500 550 meters
62.5/125 µm multimode fiber 500 550 meters
10/125 µm single-mode fiber – 5 km
10/125 µm single-mode fiber
1
– 10 km meters
Preparing Your Site
BlackDiamond X Series Switches Hardware Installation Manual 39