Used Extreme 45113 Switch Modules for Sale
Short Description: Used / Refurbished Extreme Networks Alpine GM-4Ti 4-port 100/1000BASE-T RJ-45 Switch Module - Line Card - Blade for Alpine 3800 Series Chassis (Extreme Networks 45113). (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 45113 fast at the best price possible. |
45113 Product Specifications
The Extreme Alpine 45113 is a 4-port 100/1000BASE-T RJ-45 Module for Alpine 3800 Chassis Series. This blade is also known as GM-4Ti Module.
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What is 1000Base-T?
1000BASE-T (also known as IEEE 802.3ab) is a standard for gigabit Ethernet over copper wiring. It requires, at a minimum, Category 5 cable (the same as 100BASE-TX), but Category 5e ("Category 5 enhanced") and Category 6 cable may also be used and are often recommended. 1000BASE-T requires all four pairs to be present and is far less tolerant of poorly installed wiring than 100BASE-TX.Each network segment can have a maximum distance of 100 meters, although several chip manufacturers claim 150 meters. Autonegotiation is a requirement for using 1000BASE-T[2] according to the standard. Several device drivers will allow you to force 1000 Mbps full duplex to eliminate autonegotiation issues.
In a departure from both 10BASE-T and 100BASE-TX, 1000BASE-T uses all four cable pairs for simultaneous transmission in both directions through the use of echo cancellation and a 5-level pulse amplitude modulation (PAM-5) technique. The symbol rate is identical to that of 100BASE-TX (125 MBaud) and the noise immunity of the 5-level signaling is also identical to that of the 3-level signaling in 100BASE-TX, since 1000BASE-T uses 4-dimensional Trellis Coded Modulation (TCM) to achieve a 6 dB coding gain across the 4 pairs.
The data is transmitted over four copper pairs, eight bits at a time. First, eight bits of data are expanded into four 3-bit symbols through a non-trivial scrambling procedure based on a linear feedback shift register; this is similar to what is done in 100BASE-T2, but uses different parameters. The 3-bit symbols are then mapped to voltage levels which vary continuously during transmission. Non-trivial DSP algorithms and processing power were involved with the introduction of PAM-5, hence its delayed introduction after 802.3z.
