Simple Log Analyze VPDN L2TP [User-GGSN/LAC-ISP/LNS]

Posted on September 7, 2007. Filed under: GPRS |

Pada intinya,

Saat user dial APN nya via Link Operator (GPRS/3G/HSDPA) ada dua process sampai user connected.


A. TUNNEL ESTABLISHMENT antara GGSN – VPDN ISP Router

*Mar 8 13:02:16.595: L2TP: I SCCRQ from ggsnlac tnl 10
#GGSN kirim SCRRQ untuk initiate Tunnel (Tunnel 10)

*Mar 8 13:02:16.595: Tnl 56283 L2TP: Got a challenge in SCCRQ, ggsnlac
#Validasi SCCRQ di VPDN ISP ROuter

*Mar 8 13:02:16.595: Tnl 56283 L2TP: New tunnel created for remote ggsnlac, address 202.152.240.154
#VDPN ISP Router create Tunnel 10

*Mar 8 13:02:16.595: Tnl 56283 L2TP: O SCCRP to ggsnlac tnlid 10
#VPDN ISP Router Respon (Inform) ke GGSN Tunnel 10 sudah dicreate

*Mar 8 13:02:16.595: Tnl 56283 L2TP: Control channel retransmit delay set to 1 seconds
*Mar 8 13:02:16.595: Tnl 56283 L2TP: Tunnel state change from idle to wait-ctl-reply
#Status Tunnel menjadi WAIT-CTL-REPLY

*Mar 8 13:02:16.603: Tnl 56283 L2TP: I SCCCN from ggsnlac tnl 10
#GGSN Respon menggunakan SCCCN ke VDPN ISP Router

*Mar 8 13:02:16.603: Tnl 56283 L2TP: Got a Challenge Response in SCCCN from ggsnlac
#Validasi SCCCN di VPDN ISP Router

*Mar 8 13:02:16.603: Tnl 56283 L2TP: Tunnel Authentication success
*Mar 8 13:02:16.603: Tnl 56283 L2TP: Tunnel state change from wait-ctl-reply to established
#Tunnel sudah dicreate antara GGSN & VPDN ISP Router [SUCCESS]
#Tunnel siap dipergunakan untuk Proses selanjutnya.

B. SESSION ESTABLISHMENT dengan 3 WAYS EXCHANGE antara USER-GGSN-VPDN ROUTER – RADIUS [Jika ada]

*Mar 8 13:02:16.603: Tnl 56283 L2TP: SM State established
*Mar 8 13:02:16.603: Tnl 56283 L2TP: I ICRQ from ggsnlac tnl 10
#GGSN kirim ICRQ ke VPDN ISP Router via Tunnel 10 untuk Request Session

*Mar 8 13:02:16.603: Tnl/Sn 56283/56 L2TP: Session FS enabled
*Mar 8 13:02:16.603: Tnl/Sn 56283/56 L2TP: Session state change from idle to wait-connect
*Mar 8 13:02:16.603: Tnl/Sn 56283/56 L2TP: New session created
#VPDN ISP Router create Session

*Mar 8 13:02:16.603: Tnl/Sn 56283/56 L2TP: O ICRP to ggsnlac 10/55664
#VPDN ISP Router respon ke GGSN menggunakan ICRP

*Mar 8 13:02:16.603: Tnl 56283 L2TP: Control channel retransmit delay set to 1 seconds
*Mar 8 13:02:16.615: Tnl/Sn 56283/56 L2TP: I ICCN from ggsnlac tnl 10, cl 55664
#GGSN kirim ICCN ke VPDN ISP Router yang berisi informasi Negosiasi LCP GGSN – User

*Mar 8 13:02:16.615: xl@speed.net.id Tnl/Sn 56283/56 L2TP: Session state change from wait-connect to wait-for-service-selection
#Session User status berubah.

*Mar 8 13:02:16.615: ppp55 PPP: Authorization NOT required
*Mar 8 13:02:16.615: ppp55 PPP: Sent PAP LOGIN Request
*Mar 8 13:02:16.615: ppp55 PPP: Received LOGIN Response PASS
#Authentication PPP L2TP VPDN > Berhasil

*Mar 8 13:02:16.619: Vi2.1 Tnl/Sn 56283/56 L2TP: Virtual interface created for xl@speed.net.id, bandwidth 100000 Kbps
*Mar 8 13:02:16.619: Vi2.1 Tnl/Sn 56283/56 L2TP: VPDN session up
#VPDN Session User sudah Up, IP sudah di assign & Virtual Interface sudah dicreate (Interface Vi2.1)

*Mar 8 13:02:16.619: Vi2.1 Tnl/Sn 56283/56 L2TP: Session state change from wait-for-service-selection to established
#User Session Established.

*Mar 8 13:02:16.619: Vi2.1 PAP: O AUTH-ACK id 0 len 5
*Mar 8 13:02:16.867: Tnl 4174 L2TP: Control channel retransmit delay set to 1 seconds
*Mar 8 13:02:20.867: Tnl 4174 L2TP: Shutdown tunnel
#Tunnel sudah bisa dishutdown, karena Session sudah UP.

*Mar 8 13:02:20.867: Tnl 4174 L2TP: Tunnel state change from shutting-down to idle
#Tunnel akan di Shutdown.

a. rahman isnaini r. sutan
2404:170:ee02::10
talang betutu, River Side.

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