Hi, I have Cisco 3640 with three 16 modems Network Modules. My problem with this box is Not able to connect at first time. After negotiation (Handshaking) it is disconnecting the user, if I try with the same userid and password it is connecting. I raised the case to TAC, but not successful to solve the problem. They asked for search protecters, and separate earthing for router. We did it, but the problem is not solved. Here is the configuration that I am using at my router end... .................... .................... aaa new-model aaa authentication login default group radius enable aaa authentication login root local aaa authentication ppp default group radius aaa accounting network default start-stop group radius ................ ................ modem country microcom_hdms india ................. ................. chat-script rst "" "AT&FS0=1" OK ................. ................. interface Group-Async1 ip unnumbered Ethernet0/0 no ip directed-broadcast encapsulation ppp ip tcp header-compression passive autodetect encapsulation ppp async mode dedicated peer default ip address pool setup_pool no cdp enable ppp authentication pap group-range 33 48 ! interface Group-Async2 ip unnumbered Ethernet0/0 no ip directed-broadcast encapsulation ppp ip tcp header-compression passive autodetect encapsulation ppp async mode dedicated peer default ip address pool setup_pool no cdp enable ppp authentication pap group-range 65 80 ! interface Group-Async3 ip unnumbered Ethernet0/0 no ip directed-broadcast encapsulation ppp ip tcp header-compression passive autodetect encapsulation ppp async mode dedicated peer default ip address pool setup_pool no cdp enable ppp authentication pap group-range 97 112 ....................... ....................... ip local pool setup_pool xxx.xxx.xxx.xxx xxx.xxx.xxx.xxx ip classless ........................ ........................ radius-server configure-nas radius-server host xxx.xxx.xxx.xxx auth-port 1645 acct-port 1646 radius-server key XXXXXXXX For authentication I am using the cistron radius. Can anyone help me to solve this problem... Regards, Kiran Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=4657&t=4657 -------------------------------------------------- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]

