> In light of all the helpful information regarding "Dialup networking can not
> negotiate..." and that it may be caused by a slowdown of the PM.
Almost always this is caused because Items other than TCP/IP are checked
in the DUN. Adding those other things can add 10-15 seconds of
negotiation. If everything is right W95 takes about 25 seconds from
answer to link up with a 28.8 or 33.6 modem.
> How can I check that it really is a slowdown of the PM or even my radius
> server? What are the timing values? How can I check authentication
> response time?
It is not a slowdown of the PM. It might be a congested Ethernet or a Wan
connection.
> Also, can a switched HUB adversly affect a PM in this way?
It should only help.
> By the way, here is my setup up, 6 fully loaded PMs on a switched HUB, each
> PM has its own port. The radius server is on the local network and is
> running DNS and QMail SMTP, POP3. The radius server has experimental code
> which may be causing this but I need some way of measuring response time.
> The experimental code logs to an SQL database and does psuedo authentication
> from an SQL database. Psuudo because it is only going through the motions
> of SQL authentication and is currently doing authentication via a DB users
> file. So technically, its authenticating twice for each request.
I don't know of a way to test the performance of your radius server. It
would seem like a program could be written to time an individual
authentication and then see how many requests it can handle per second.
Radius really doesn't do a lot of work, it should be possible to handle
thousands of requests per second on very moderate hardware.
If you have a performance issue, the first thing to do is make sure your
server is healthy. Give it more memory if it looks like it might be
running out. Going into swap is instant death for a busy server and
memory is so cheap! Add some more drives and put the log files on their
own drives. Seeks take forever in computer time!
Lost customer confidence is hard to restore.
Doug Ingraham From the Ferengi Rules of Acquisition.
Rapid City, SD #34 "Peace is good for business."
USA #35 "War is good for business."
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