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Wireless Networks Thread, Excessive CRC/Alignment Errors on port in Technical; Many of my HP Procurve switches are reporting "Excessive CRC/Alignment Errors on port". This has only just stared happening in ...
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    KWestos's Avatar
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    Excessive CRC/Alignment Errors on port

    Many of my HP Procurve switches are reporting "Excessive CRC/Alignment Errors on port". This has only just stared happening in the last 2 weeks (according to the switch logs). Why would this suddenly start happening to some switches/cabling and computers now, when they have been in place for 18 months now?

    Also, would the affect logon times.

    Many thanks

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    Geoff's Avatar
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    Any communications errrors will slow down the speed of the link. As the PC/Switch will have to resend the information that didn't make it. The more errors, the slower it gets.

    The usual cause of this is either:

    1) Buggy NIC drivers.
    2) A physical cable fault.
    3) Mismatched speed/duplex settings.
    4) Sending tagged VLAN packets to a port that's not expecting them.

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    Im also getting the same issue. At first i thought it would down to nic drivers but its happening on different models of PC and even printers.

    I use HP 5406zl Switches with the latest firmware!

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