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small network - bottleneck?

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small network - bottleneck?

thomasjamesr
In a small network with a cable modem -> router -> switch
configuration, is there a bottleneck because the switch to router is
just a 100 GB port? Not sure if I'm wording this correctly. It seems
like the switch would be limited to 100 GB maximum so that if 8
ports were active and all 8 were streaming video, for example, each
would share the bandwidth of the router-to-switch connection. All
else being equal for this example, that would be 12.5 GB per port
rather than 100. Would this also be the same for the modem-to-
router connection?

Is there something I don't understand? (I may answer my own
question if I keep typing.) Since the cable connection is much slower
than this I suppose that the above is true, but irrelevant.
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    Churdoo

    The pipe to the internet is the real bottleneck in your example. Even if you have the fastest broadband service that your provider offers, which generally today for non-dedicated broadband is in the 6mb range, still 6mb pipe to the internet versus 100mb at the switch.

    The workstations can communicate with each other at 100mbps for file-sharing, print-sharing, whatever, but any internet bound traffic has to slow right down for the skinny pipe.

    By the way, just a brief semantics lesson; big B usually means Bytes, GB=Giga-Bytes, MB=Mega-Bytes, etc.; and little b is bits, gb=Giga-bit, mb=Mega-bit, etc. and bandwidth is measured in bits.

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    0 Votes
    Churdoo

    The pipe to the internet is the real bottleneck in your example. Even if you have the fastest broadband service that your provider offers, which generally today for non-dedicated broadband is in the 6mb range, still 6mb pipe to the internet versus 100mb at the switch.

    The workstations can communicate with each other at 100mbps for file-sharing, print-sharing, whatever, but any internet bound traffic has to slow right down for the skinny pipe.

    By the way, just a brief semantics lesson; big B usually means Bytes, GB=Giga-Bytes, MB=Mega-Bytes, etc.; and little b is bits, gb=Giga-bit, mb=Mega-bit, etc. and bandwidth is measured in bits.