1. Broadband Communications 광대역통신연구실 APAN-KR Korea University Traffic Analysis with Cflowd Sungkwan Youm Korea Univ. Broadband Telecommunication Laboratory

2. Broadband Communications 광대역통신연구실 Contents KU NGI Intra Connectivity KU NGI Inter Connectivity Statistics Total Traffic AS Number Networks Protocols

3. Broadband Communications 광대역통신연구실 KU NGI Intra Connectivity ATM 155M CANS The First Tech Complex The KU NOC Proc. Lab. PC Router CANS The Second Tech Complex Brabo Lab. Network Lab. FORE ASX200BX Commodity Internet Commodity Internet APAN, vBNS, Internet2 etc APAN, vBNS, Internet2 etc Fore Runner LE155 Computer Lab. The Science Building GW to the Labs. The Radio Freq. Research Building NGI Lab.ITRC Brabo Lab. PAXCOMM Cisco 7204 Fast Ethernet

4. Broadband Communications 광대역통신연구실 KU NGI Inter Connectivity Korea Univ. AS9452 APAN Seoul-XP AS9270 CA*Net2 STARTAP HANA AS3825 ESNET AS293 KORNET AS4766 KREN AS2563 KIX-NCA vBNS AS145 Internet2 Abilene APAN Tokyo-XP AS7660 HPCNET AS1237 PUBNET AS9766 KU-NGI. TEN155 KT-IX KINXDACOM-IX 70M 10M 155M 45M 20M 8M U S, Europe, Canada Japan Korea

5. Broadband Communications 광대역통신연구실 Total Traffic

6. Broadband Communications 광대역통신연구실 AS Number 62% 36%

7. Broadband Communications 광대역통신연구실 AS Number

8. Broadband Communications 광대역통신연구실 Networks

9. Broadband Communications 광대역통신연구실 Protocols

10. Broadband Communications 광대역통신연구실 Conclusions Almost traffic is domestic. From KSIAT and Seoul national university Almost traffic is TCP traffic. About 99% of the traffic About 90% of total flows