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krzaq wrote: |
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> Could a faulty cable/switch cause such havock on all interfaces (lo in |
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> particular)? |
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> I am no expert and I have no idea where to start looking. The problem |
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> seems to be |
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> with hardware but not with memory (CPU? , motherboard?). |
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A friend of mine is a network admin for a rather large university. In |
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his office on his wall, he has framed two items. |
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* an ethernet card |
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* a blue ethernet cable |
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Both caused system wide network outages at different times. The ethernet |
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card, because it started spewing an invalid MAC address, and overloaded |
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all the switches in a boardcast storm. The ethernet cable because of a |
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break inside the cable that caused noise on a main interface to one of |
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the school's core routers. |
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Never underestimate the small things. First rule of troubleshooting: |
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* always try the simple fix first |
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Change cables, swap ethernet cards |
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As far as your specific problem goes, I'd try with a vanilla kernel and |
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see if your problems persist. Second rule of troubleshooting: |
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* Always define a control state/configuration |
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If it works, slowly add your patches till it breaks. If it doesn't make |
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a difference, then figure out your last update or change, and |
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remove/disable it from the system. Keep doing that until your problem |
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goes away. |
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Third rule of troubleshooting: |
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* Even unrelated changes can have unforeseen consequences. |
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There is an urban legend of an auto company Engineer that was sent out |
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to a customer's home, because the new car they bought was acting up. The |
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owner insisted that the car didn't like vanilla ice cream, because if he |
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went to the store and bought any other type of ice cream - the car |
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started right up. If he bought vanilla ice cream, the car would not start. |
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According to the story, the vanilla ice cream was kept in the front of |
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the store. If the owner bought vanilla ice cream, it took him less time |
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to be in the store, and the engine of the car wasn't able to disipate a |
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vapor lock issue. Any other ice cream, and the time was sufficient to |
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disipate the problem and have the car start with out problem. |
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http://www.snopes.com/autos/techno/icecream.asp |
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http://en.wikipedia.org/wiki/Fuel_pump |
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-- |
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