networking:eir-pir-mbs-cir-cbs
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networking:eir-pir-mbs-cir-cbs [2024/06/21 14:55] – aperez | networking:eir-pir-mbs-cir-cbs [2025/02/18 10:29] (current) – aperez | ||
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**CIR (Committed Information Rate)**: | **CIR (Committed Information Rate)**: | ||
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The above to see MTU and regulate it with that of the operator' | The above to see MTU and regulate it with that of the operator' | ||
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**Should MTU be 1500 or 1492?** | **Should MTU be 1500 or 1492?** | ||
It is generally recommended that the MTU for a WAN interface connected to a PPPoE DSL network be 1492. In fact, with auto MTU discovery, 1492 is discovered to be the maximum allowed MTU. However, having an MTU of 1452 is most optimal. | It is generally recommended that the MTU for a WAN interface connected to a PPPoE DSL network be 1492. In fact, with auto MTU discovery, 1492 is discovered to be the maximum allowed MTU. However, having an MTU of 1452 is most optimal. | ||
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- | **Shannon' | + | {{ : |
- | Channel = B.log2(1 + S/N) | + | {{pdfjs 46em >: |
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+ | MEF}}** | ||
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- | The channel capacity depends on the bandwidth in Hz and the log base 2 of (1 + Signal/ | + | {{ : |
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- | If we observe the relationship between C and the bandwidth, we notice that it is a linear function, if the bandwidth increases therefore the channel increases (see graph). | + | ---- |
- | If we now analyze the graph of the relationship between C and the logarithm | + | |
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- | Therefore, reducing noise is one of the fundamental factors to increase the channel and not so much the bandwidth; Noise is the biggest enemy of communications. | + | |
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- | I consider, as a personal opinion, that to improve the channel in optical media it is necessary to reduce as much as possible the dispersion and absorption of photons (LED or Laser) in the transmission media, maintaining Snell' | + | |
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- | Note: IEEE P802.3df 200 Gb/s, 400 Gb/s, 800 Gb/s, and 1.6 Tb/s Ethernet Optical Group e-mail reflector archive: | + | |
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networking/eir-pir-mbs-cir-cbs.1718999722.txt.gz · Last modified: 2024/06/21 14:55 by aperez