Subject: 27. I sometimes get "LAN security error" violations, but I know my PAP|CHAP username/password combinations are correct. Why?

Marco Hyman writes:
> A "LAN Security error" is what you get when someone calls into a
> unit and tries to use the same IP address as a currently active users.
> It typically is a transient problem caused by call collision.  Imagine
> P50A calls P50B at the same time that P50B calls P50A.  The two ends
> use PPP and exchange IP addresses.  P50A sees that the IP address
> received from P50B as part of the *incoming* call negotiation is the
> in use (for *outgoing* call negotiation).  A LAN security error is
> logged.
I'd add that a good way to debug PPP problems is to drop into debug monitor mode (see above) and run the debug commands "pppif" (and perhaps "pppfsm"). You should see PPP negotiation status the next time your unit makes or receives a call.


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