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Showing results for tags 'usb drive'.
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I am monitoring a system for intermittent connection issues. The system is configured as: DEVICE 1 <------> Packet Squirrel 1 <------> SWITCH <------> Packet Squirrel 2 <------> DEVICE 2 The cables are 6ft, 1ft, 1ft, and 10ft respectively I occasionally see a packet at PS1 but not at PS2. Thinking it may be the switch, I changed the 100MB switch to a 1GB switch from different manufacturer. This got me wondering if the packet squirrels were recording all traffic. There is about 3600 packets per minute flowing between the 2 devices, with the total traffic being about 1.68MB/minute, or 28KB/sec. The largest packet is 1514 bytes. I then swapped the packet squirrels and saw packet loss on PS2, kinda ruling out the packet squirrels. This led to a question of the thumb drives, trying to eliminate possibilities. I am using SanDisk Ultra USB 3.0 64GB thumb drives. Has anyone had issues with certain thumb drives and the packet squirrels?
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Sometimes you come across a generic USB drive and the drive doesn't have a unique serial number in the firmware. I know that if one of these devices is plugged in to a Windows machine that it will generate a serial number for the USB drive and it will be identifiable as a generated serial number because it will contain a "&" in the second position of the serial number. I also know that different route hosts on the same machine will generate a different serial number for the same USB drive on the same Windows machine. I also know that Ubuntu will store USB device information in the var/log/syslog file. My question is if a generic USB device is plugged into linux, will it generate a serial number for the device in the same way that windows does? Will it also generate a different serial for the same USB drive through different USB ports? I'd try this myself to get the answer but out of all of the USB drives I have all of them have actual serial numbers. -.- Thanks for your time!
