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Funny bug in Cisco Cat. 3750 12.2(50)SE

René Jorissen on March 10, 2010 2 Comments

A colleague experienced a funny bug with a Cisco Catalyst 3750 running IOS 12.2(50)SE. The bug is know under Bug ID CScsy79004.

Check the images below:



He was doubting his alcohol level, because he thought he didn’t drink during the weekend….LOL

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René Jorissen

Co-owner and Solution Specialist at 4IP Solutions
René Jorissen works as Solution Specialist for 4IP in the Netherlands. Network Infrastructures are the primary focus. René works with equipment of multiple vendors, like Cisco, Aruba Networks, FortiNet, HP Networking, Juniper Networks, RSA SecurID, AeroHive, Microsoft and many more. René is Aruba Certified Edge Expert (ACEX #26), Aruba Certified Mobility Expert (ACMX #438), Aruba Certified ClearPass Expert (ACCX #725), Aruba Certified Design Expert (ACDX #760), CCNP R&S, FCNSP and Certified Ethical Hacker (CEF) certified. You can follow René on Twitter and LinkedIn.

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  1. Matt says:

    We came across this a couple of times recently and the supplier swapped the switches out each time. It drove the engineer mad the first time it happened, he was at the end of a long day working out-of-hours and thought he was seeing things.

    Strangely the replacements didn’t have the problem with same IOS & same config, so we’d assumed it was a wiring defect rather than a software bug.

  2. rintintintintin says:

    the problem seems to occur only in model revisions <= E0.
    i got tons of images of this phenomenon and stopped drinking for quite a while. ;)
    in our case the affected interfaces were in state "connected" …

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