Hi, I changed the listen IP as you has told me last time. Now I am able to connect to the free radius, I get the vrf properly configured on the LNS as expected by the radius and get the proper IP also. But now the problem is that once I am connected, after 5 secs i get disconnected. I saw in the LNS logs, in which I noted that the request is send to 172.31.6.158, but I am getting reply from radius on the other IP which is 202.54.6.101, basicaly I have 2 IP`s on radius server. The later one I used for downloading the packages from internet. Please let me know what and where I should do the change so that Radius replies with the IP that it is listening from. I am attaching the debug logs on the LNS for your ref; _________________________________________________________________ 031415: Oct 12 17:23:05.705 IST: RADIUS/ENCODE(000006A8):Orig. component type = VPDN 031416: Oct 12 17:23:05.705 IST: RADIUS(000006A8): Config NAS IP: 192.168.243.250 031417: Oct 12 17:23:05.705 IST: RADIUS(000006A8): sending 031418: Oct 12 17:23:05.705 IST: RADIUS(000006A8): Send Accounting-Request to 172.31.6.158:1646 id 1646/185, len 266 031419: Oct 12 17:23:05.705 IST: RADIUS: authenticator A7 A6 49 D5 CF 5B A2 CE - 45 8E 68 4C 71 51 F6 17 031420: Oct 12 17:23:05.705 IST: RADIUS: Acct-Session-Id [44] 10 "00000A27" 031421: Oct 12 17:23:05.705 IST: RADIUS: Tunnel-Type [64] 6 00:L2TP [3] 031422: Oct 12 17:23:05.705 IST: RADIUS: Tunnel-Medium-Type [65] 6 00:IPv4 [1] 031423: Oct 12 17:23:05.705 IST: RADIUS: Tunnel-Server-Endpoi[67] 17 "192.168.243.250" 031424: Oct 12 17:23:05.705 IST: RADIUS: Tunnel-Client-Endpoi[66] 15 "172.23.119.14" 031425: Oct 12 17:23:05.705 IST: RADIUS: Tunnel-Assignment-Id[82] 3 "1" 031426: Oct 12 17:23:05.705 IST: RADIUS: Tunnel-Client-Auth-I[90] 15 "l2tp-tata-lac" 031427: Oct 12 17:23:05.705 IST: RADIUS: Tunnel-Server-Auth-I[91] 16 "hb-vsb-t1-rw01" 031428: Oct 12 17:23:05.705 IST: RADIUS: Acct-Tunnel-Connecti[68] 11 "126111449" 031429: Oct 12 17:23:05.705 IST: RADIUS: Framed-Protocol [7] 6 PPP [1] 031430: Oct 12 17:23:05.705 IST: RADIUS: User-Name [1] 16 "tcl@cisco1.com" 031431: Oct 12 17:23:05.705 IST: RADIUS: Acct-Authentic [45] 6 RADIUS [1] 031432: Oct 12 17:23:05.705 IST: RADIUS: Acct-Session-Time [46] 6 1 031433: Oct 12 17:23:05.709 IST: RADIUS: Acct-Input-Octets [42] 6 84 031434: Oct 12 17:23:05.709 IST: RADIUS: Acct-Output-Octets [43] 6 90 031435: Oct 12 17:23:05.709 IST: RADIUS: Acct-Input-Packets [47] 6 5 031436: Oct 12 17:23:05.709 IST: RADIUS: Acct-Output-Packets [48] 6 6 031437: Oct 12 17:23:05.709 IST: RADIUS: Acct-Terminate-Cause[49] 6 host-request [18] 031438: Oct 12 17:23:05.709 IST: RADIUS: Acct-Status-Type [40] 6 Stop [2] 031439: Oct 12 17:23:05.709 IST: RADIUS: NAS-Port-Type [61] 6 Virtual [5] 031440: Oct 12 17:23:05.709 IST: RADIUS: NAS-Port [5] 6 751 031441: Oct 12 17:23:05.709 IST: RADIUS: NAS-Port-Id [87] 17 "Uniq-Sess-ID751" 031442: Oct 12 17:23:05.709 IST: RADIUS: Calling-Station-Id [31] 17 "404001629241466" 031443: Oct 12 17:23:05.709 IST: RADIUS: Connect-Info [77] 13 "64000/57600" 031444: Oct 12 17:23:05.709 IST: RADIUS: Service-Type [6] 6 Framed [2] 031445: Oct 12 17:23:05.709 IST: RADIUS: NAS-IP-Address [4] 6 192.168.243.250 031446: Oct 12 17:23:05.709 IST: RADIUS: Acct-Delay-Time [41] 6 0 031447: Oct 12 17:23:05.725 IST: RADIUS: Received from id 1646/185 202.54.6.101:1646, Accounting-response, len 20 031448: Oct 12 17:23:05.725 IST: RADIUS: Response for non-existent request ident 031449: Oct 12 17:23:06.389 IST: %LINK-3-UPDOWN: Interface Virtual-Access4, changed state to down 031450: Oct 12 17:23:10.581 IST: RADIUS: no sg in radius-timers: ctx 0x654F7FC4 sg 0x0000 031451: Oct 12 17:23:10.581 IST: RADIUS: Retransmit to (172.31.6.158:1645,1646) for id 1646/184 031452: Oct 12 17:23:10.581 IST: RADIUS: acct-delay-time for C0040B4 (at C004194) now 5 031453: Oct 12 17:23:10.597 IST: RADIUS: Received from id 1646/186 202.54.6.101:1646, Accounting-response, len 20 031454: Oct 12 17:23:10.597 IST: RADIUS: Response for non-existent request ident 031455: Oct 12 17:23:11.413 IST: RADIUS: no sg in radius-timers: ctx 0x50802954 sg 0x0000 031456: Oct 12 17:23:11.413 IST: RADIUS: Retransmit to (172.31.6.158:1645,1646) for id 1646/185 031457: Oct 12 17:23:11.413 IST: RADIUS: acct-delay-time for C3A1DF4 (at C3A1EF8) now 5 031458: Oct 12 17:23:11.429 IST: RADIUS: Received from id 1646/187 202.54.6.101:1646, Accounting-response, len 20 031459: Oct 12 17:23:11.429 IST: RADIUS: Response for non-existent request ident 031460: Oct 12 17:23:15.893 IST: RADIUS: no sg in radius-timers: ctx 0x654F7FC4 sg 0x0000 031461: Oct 12 17:23:15.893 IST: RADIUS: Retransmit to (172.31.6.158:1645,1646) for id 1646/186 031462: Oct 12 17:23:15.893 IST: RADIUS: acct-delay-time for C0040B4 (at C004194) now 10 031463: Oct 12 17:23:15.909 IST: RADIUS: Received from id 1646/188 202.54.6.101:1646, Accounting-response, len 20 031464: Oct 12 17:23:15.909 IST: RADIUS: Response for non-existent request ident 031465: Oct 12 17:23:16.565 IST: RADIUS: no sg in radius-timers: ctx 0x50802954 sg 0x0000 031466: Oct 12 17:23:16.565 IST: RADIUS: Retransmit to (172.31.6.158:1645,1646) for id 1646/187 031467: Oct 12 17:23:16.565 IST: RADIUS: acct-delay-time for C3A1DF4 (at C3A1EF8) now 10 031468: Oct 12 17:23:16.581 IST: RADIUS: Received from id 1646/189 202.54.6.101:1646, Accounting-response, len 20 031469: Oct 12 17:23:16.581 IST: RADIUS: Response for non-existent request ident 031470: Oct 12 17:23:20.949 IST: RADIUS: no sg in radius-timers: ctx 0x654F7FC4 sg 0x0000 031471: Oct 12 17:23:20.949 IST: RADIUS: Retransmit to (172.31.6.158:1645,1646) for id 1646/188 031472: Oct 12 17:23:20.949 IST: RADIUS: acct-delay-time for C0040B4 (at C004194) now 15 031473: Oct 12 17:23:20.965 IST: RADIUS: Received from id 1646/190 202.54.6.101:1646, Accounting-response, len 20 031474: Oct 12 17:23:20.965 IST: RADIUS: Response for non-existent request ident 031475: Oct 12 17:23:21.781 IST: RADIUS: no sg in radius-timers: ctx 0x50802954 sg 0x0000 031476: Oct 12 17:23:21.781 IST: RADIUS: Retransmit to (172.31.6.158:1645,1646) for id 1646/189 031477: Oct 12 17:23:21.781 IST: RADIUS: acct-delay-time for C3A1DF4 (at C3A1EF8) now 15 031478: Oct 12 17:23:21.797 IST: RADIUS: Received from id 1646/191 202.54.6.101:1646, Accounting-response, len 20 031479: Oct 12 17:23:21.797 IST: RADIUS: Response for non-existent request ident 031480: Oct 12 17:23:26.005 IST: RADIUS: no sg in radius-timers: ctx 0x654F7FC4 sg 0x0000 031481: Oct 12 17:23:26.005 IST: RADIUS: No response from (172.31.6.158:1645,1646) for id 1646/190 031482: Oct 12 17:23:26.005 IST: RADIUS/DECODE: parse response no app start; FAIL 031483: Oct 12 17:23:26.005 IST: RADIUS/DECODE: parse response; FAIL 031484: Oct 12 17:23:27.381 IST: RADIUS: no sg in radius-timers: ctx 0x50802954 sg 0x0000 031485: Oct 12 17:23:27.381 IST: RADIUS: No response from (172.31.6.158:1645,1646) for id 1646/191 031486: Oct 12 17:23:27.381 IST: RADIUS/DECODE: parse response no app start; FAIL 031487: Oct 12 17:23:27.381 IST: RADIUS/DECODE: parse response; FAIL ______________________________________________________________________ Thanks and Regards, Yagnesh Dave.