Re: An interesting packet inspection problem

[Jeff Kell <jeff-kell () utc edu>]

Valdis.Kletnieks () vt edu wrote:
> Many moons ago, a software package called VMNET kept crashing the FDDI ring
> at the JVNC, near Princeton University.  Basically, VMNET was layering IBM's
> NJE protocol used by Bitnet over TCP/IP - and the format of an NJE SIGNON
> packet to start a link up, when stuffed into the FDDI format (which on the
> wire was some NRZI or some such thing), resulted in a too-long run of zero
> bits (basically, no laser for a long time), causing the other end to lose
> timing sync due to clock drift.
Wow, flashback to the old modem "+++" sequence...

Jeff
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