Hello,
I've sucessfully installed Freeradius Server, rp-pppoe server and ppp-2.4.3-5.fc4 package that comes with radius plugin...
But when I try to connect to server it shows that error:

Oct 3 21:32:41 server pppoe-server[20092]: Session 6 created for client 00:0d:61:c5:41:62 (192.168.55.105) on eth1 using Service-Name ''
Oct 3 21:32:41 server pppd[20092]: Plugin radius.so loaded.
Oct 3 21:32:41 server pppd[20092]: RADIUS plugin initialized.
Oct 3 21:32:41 server pppd[20092]: Plugin radattr.so loaded.
Oct 3 21:32:41 server pppd[20092]: RADATTR plugin initialized.
Oct 3 21:32:41 server pppd[20092]: pppd 2.4.3 started by root, uid 0
Oct 3 21:32:41 server pppd[20092]: Using interface ppp1
Oct 3 21:32:41 server pppd[20092]: Connect: ppp1 <--> /dev/pts/120
Oct 3 21:33:12 server pppd[20092]: LCP: timeout sending Config-Requests
Oct 3 21:33:12 server pppd[20092]: Connection terminated.

Actually no queries are logged in radius server logs.

P.S. I have correctly edited my /etc/radiusclient/servers file and my freeradius server is working correctly.

I dunno much about radius, but the problem here is your PPP config. Effectively there is just no PPP communication. Hows the PPP server setup?

debug
mtu 1472
mru 1472
require-pap
default-asyncmap
proxyarp
ktune
lcp-echo-interval 20
lcp-echo-failure 2
ms-dns 192.168.0.12
plugin radius.so
plugin radattr.so
nobsdcomp
noccp
noendpoint
noipdefault
noipx
novj
receive-all
logfile /tmp/logfile

Here's my ppp server config:

172.16.0.1:172.16.0.2
ms-dns 192.168.0.2
asyncmap 0
lock
mtu 1432
mru 1432
crtscts
proxyarp
auth
unit 2
-chap
+pap
lcp-echo-interval 30
lcp-echo-failure 2
logfile /var/log/ppp/mylog
ipparam remote


Id say you wanna get rid of noendpoint, noccp, receive-all. I'd also suggest losing ktune. Ignore my unit parameter, I've hacked up my own version of ppp ^_^

If you've got this in a seperate config file, dont forget about the /etc/ppp/options file. Other than that, you're looking at connectivy problems between, and would need to scour the logs.

No success with your conf too...
The problem is that radius plugin doesn't query radius server.
When I remove it the pppoe server works perfect from /etc/ppp/pap-secrets file, but in my situation using radius server is obligated!

I make pppoe-server & radius
are you make like it it is not easy and some time it work and ither does not work
may be it need miracle to work,

i get the similar problem,can you attach the servers and radiusclients.conf...thanks a lot