Used Extreme 45211 Switch Modules for Sale
Short Description: Used / Refurbished Extreme Networks Alpine FM-24MFi 24-port (MT-RJ) Fast Ethernet 100BASE-FX MMF Multimode Switch Module - Line Card - Blade for Alpine 3800 series (Extreme Networks 45211). (Extreme Alpine 3800 series)
If you are looking to buy new or used and refurbished Extreme Switch Modules, you can stop searching. Vology has over $50 million of inventory stocked in our warehouse. In addition, we have one of the largest sourcing networks in the industry to locate your Extreme 45211 fast at the best price possible. |
45211 Product Specifications
The Extreme Alpine 45211 is a 24-port 100BASE-FX MMF MT-RJ Module for Alpine 3800 Chassis Systems. Be sure to check out our entire selection of Extreme Networks Alpine chassis, modules, parts, and accessories
Physical and Environmental Specs
- Dimensions: 1.5" Height x 16.25" Width x 8" Depth
- Weight: 3.97 lbs
- Weight (fully loaded): 31 lbs (14 kg)
- Operating Temperature: 0º C to 40º C
- Storage Temperature: -40º C to 70º C
- Humidity: 10% to 95% non-condensing
- Optical Power Budget: 11 dBm
What is 100Base-FX?
100BASE-FX is a version of Fast Ethernet over optical fiber. It uses two strands of multi-mode optical fiber for receive and transmit. Maximum length is 400 metres (1,310 ft) for half-duplex connections (to ensure collisions are detected) or 2 kilometres (6,600 ft) for full-duplex. 100BASE-FX uses the same 4B5B encoding and NRZI line code that 100BASE-TX does. 100BASE-FX should use SC, ST or MIC connectors with SC being the preferred option. 100BASE-FX is not compatible with 10BASE-FL, the 10 MBit/s version over optical fiber. It uses a 1300 nm near-infrared (NIR) light wavelength.What is MMF?
Multi-mode optical fiber (multimode fiber or MM fiber) is a type of optical fiber mostly used for communication over shorter distances, such as within a building. It can carry 1 Gbit/s for typical building distances; the actual maximum data rate (given the right electronics) depends upon the distance. Multi-mode fiber has a higher light-gathering capacity than single-mode optical fiber, making splicing less difficult, but its limit on speed × distance is lower. Because multi-mode fiber has a larger numerical aperture than single-mode fiber, it supports more than one propagation mode, resulting in larger modal dispersion and consequently higher pulse spreading rates, limiting information transmission capacity.Multimode fibers are more useful for carrying larger amounts of power very short distances than single mode fibers. In such fibers, mode-filling becomes important, and mode scrambling attempts to fill the fiber to capacity, achieving an equilibrium mode distribution that utilizes all available fiber modes and has a more uniform energy density. These fibers are used when an intense beam is needed, as in optical pumping, laser welding, cutting, and marking. For data applications, however, multi-mode fiber's higher attenuation is another factor limiting the length of multimode fiber links (in addition to dispersion).
The earliest fiber optic cables used a technique termed multi-mode transmission. This is where the light signals from the laser are broken up into a number of paths along the length of the fibre and are reflected off the fiber wall. The amount of reflection that occurs dictates the quality of the signal.
The equipment used for communications over multi-mode optical fiber is less expensive than that for single-mode optical fiber. Typical transmission speeds/distances limits are 100 Mbit/s up to 2 km (100BASE-FX), 1 Gbit/s for distances up to 500-600 meters (1000BASE-LX - single-mode and less often multi-mode, 1000BASE-SX - multi-mode), and 10 Gbit/s for distances up to 300 meters (10GBASE-SR).
There are two main types of multimode optical fiber, step index and graded index. Step index fiber has a sharp change in index of refraction between the core and the cladding. Graded index fiber has a more gradual transition between the two. Unfortunately both of these categories suffer from Rayleigh scattering, which means that only wavelengths between 650 and 750 nm can be carried over significant distances.
