[c-nsp] Line Code Violations

Jon Lewis jlewis at lewis.org
Thu Jul 6 18:26:56 EDT 2006


On Thu, 6 Jul 2006, John Neiberger wrote:

> I had an issue like that once. The carrier could test the circuit
> using 8-bit patterns and they always ran clean. We didn't ever see any
> problems except for when we tried to transfer one specific file. The
> file transfer would always fail at the same point. I ended up editing
> the file in a hex editor and found the precise 18-byte pattern that
> would cause it to fail. The carrier couldn't replicate it because
> their test equipment couldn't do 18-byte patterns.  :-)

I did essentially the same thing, and between traceroute and ping -p, I 
was able to tell them "look, something's not right between routerA and 
routerB on your network.  This pattern does not pass.  Please figure it 
out."

----------------------------------------------------------------------
  Jon Lewis                   |  I route
  Senior Network Engineer     |  therefore you are
  Atlantic Net                |
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