[RadiusNT] Request tips for fault-tolerant RADIUS server system

Danny Sinang ( (no email) )
Thu, 27 May 1999 21:17:22 +0800


I just learned that one of our major ISP's suffered a major RADIUS server
problem. Apparently, they had more than 30 POP's nationwide all pointing to
one RADIUS server.

How can this fiasco be averted next time ?

Can someone recommend a setup that will be a very fault-tolerant RADIUS
system ? I mean, what hardware / software combination would prove up to the
task ? How about 2 RADIUS servers (primary and secondary) that point to 1
SQL Server machine whose database is actively mirrored on another SQL Server
machine ? Will this do the job ?

And in the case of our major ISP, would it be better to have each POP
maintain the database for that POP's users ?

And when this user (let's say his username is "john" and his home POP is
"pop1") roams about our country, all he has to do is use the username
john@pop1.domain.com ?

Can RadiusNT 2.5 handle this type of roaming by the use of POP + domain
names ?

- Danny Sinang