I have a 7204 (12.0(22)S1) terminating DSL L2TP VPDN and freeradius ( 1.0.4) I am having problem when number of users (clients) increase from 6 and up. It worked fine when I have only 5 users (clients) using the system. I found the max_requests was set at 1024 in radiusd.conf and have inscrease the number up to 50 clients (50x256=12800) max_requests = 12800 However, It doesn't seem to have any effect. What am I doing wrong. One things I noticed. The two users that can not connect will sent incomplete information to the radius server from NAS (7204) such as: Waking up in 6 seconds... rad_recv: Access-Request packet from host 192.168.17.1:1645, id=200, length=95 NAS-IP-Address = 192.168.17.1 NAS-Port = 3 NAS-Port-Type = ISDN User-Name = "knguyen@abc.net" CHAP-Password = 7482c25ab08ffsddfddc0625fcb4007e Service-Type = Framed-User Framed-Protocol = PPP auth: user supplied CHAP-Password matches local User-Password Sending Access-Accept of id 200 to 192.168.17.1:1645 Service-Type = Framed-User Framed-Protocol = PPP Framed-IP-Address = 209.101.222.12 Framed-IP-Netmask = 255.255.255.128 Framed-MTU = 1492 Finished request 16 Going to the next request *********** This is a log when it connected. It included the Tunnel server and client end point ********* rad_recv: Accounting-Request packet from host 192.168.17.1:1646, id=199, length=232 NAS-IP-Address = 192.168.17.1 NAS-Port = 6 NAS-Port-Type = ISDN User-Name = "knguyen@abc.net" Acct-Status-Type = Stop Acct-Authentic = RADIUS Service-Type = Framed-User Acct-Session-Id = "00000CD8" Framed-Protocol = PPP Tunnel-Server-Endpoint:0 = "10.10.6.5" Tunnel-Client-Endpoint:0 = "10.10.6.6" Tunnel-Type:0 = L2TP Tunnel-Client-Auth-Id:0 = "12345678" Tunnel-Server-Auth-Id:0 = "sfldse26rr.wi.AADS" Acct-Tunnel-Connection = "13441125" Framed-IP-Address = 209.101.222.12 Acct-Terminate-Cause = Admin-Reset Acct-Input-Octets = 281672 Acct-Output-Octets = 266074 Acct-Input-Packets = 4390 Acct-Output-Packets = 4154 Acct-Session-Time = 1967 Acct-Delay-Time = 0 Processing the preacct section of radiusd.conf --- Walking the entire request list --- Waking up in 6 seconds... rad_recv: Access-Request packet from host 172.17.17.1:1645, id=200, length=95 NAS-IP-Address = 172.17.17.1 NAS-Port = 3 NAS-Port-Type = ISDN User-Name = "knguyen@eintegration.net" CHAP-Password = 0xcc3aeb78c7482c25ab08dc0625fcb4007e Service-Type = Framed-User Framed-Protocol = PPP auth: user supplied CHAP-Password matches local User-Password Sending Access-Accept of id 200 to 172.17.17.1:1645 Service-Type = Framed-User Framed-Protocol = PPP Framed-IP-Address = 38.101.172.12 Framed-IP-Netmask = 255.255.255.128 Framed-MTU = 1492 Finished request 16 Going to the next request What am I missing here? thanks much, Tom