1. CERN External Router LHCOPN Router External Network Internal Network KISTI-CERN Dedicated Circuit 1Gbps KREONet2, Daejeon (KR) BGP Peering KREONet2 and CERN AS 17579 (KREONet2) BGP Peering KREONet2 and CERN KISTI/GSDC network, Daejeon (KR) AS 1237 (KREONET) 134.75.125.0/24 BGP Peering KREONet2 and KREONET Current T0 T1 GLORIAD-KR 10Gbps KRLight (collocated with StarLight), Chicago (US) AS 17579 (KREONet2) AS 513 (CERN), Geneva 10Gbps * 2

2. CERN External Router LHCOPN Router GSDC/KISTI network, Daejeon (KR) External Network Internal Network GLORIAD-KR 10Gbps KISTI-CERN Dedicated Circuit 1Gbps -> 2Gbps (-> 10Gbps) KREONet2, Daejeon (KR) BGP Peering KREONet2 and CERN MED = 50 ?,(Secondary) 10Gbps * 2 AS 1237 (KREONET) 134.75.125.0/24 AS 17579 (KREONet2) BGP Peering KREONet2 and CERN MED=10 ?,(Primary) BGP Peering KREONet2 and KREONET After Policy Based Routing LHCOPN Prefixes of KISTI 134.75.125.0/24 #AS1237 KR-KISTI IP MTU = 9000 Bytes Ethernet MTU = 9026 Bytes ICMP unreachable = enabled T0 T1 KRLight (collocated with StarLight) Chicago (US) AS 513 (CERN), Geneva AS 17579 (KREONet2)

3. KR-KISTI ProviderSectionNOC emailNOC telephoneAvailability GSDC (KISTI)Daejeonsysadmin@kisti.re.kr KREONETDaejeonnoc@kreonet.net (cc. bscho@kisti.re.kr) +82-42-869-070724x7 KREONet2Daejeon - CERNnoc@kreonet2.net (cc: bscho@kisti.re.kr) +82-42-869-070724x7 CERNGeneva KREONET/KREONet2 NOC Email : noc@kreonet.net, noc@kreonet2.netnoc@kreonet.netnoc@kreonet2.net Telephone : +82-42-869-0584 Availability : 24*7

4. KRLight Topology, 2013 Daejeon, KRHong Kong, CNSeattle, USA KREONet2 1Gbit/s Univ. of Hong KongCERNET Univ. of Hong Kong CERNET(CNGI-6IX) CUHK, HARNET APAN-JP, Microsoft, JGN-X ASNet, NUS, JGN-X … KREONet2 HKIX 10Gbit/s Hong Kong 10Gbit/s Google (IPv6) 1Gbit/s HKOEP IRNC-GLORIAD KREONet2 Google Seattle CA*net4, Internet2, PNWGP, CENIC UltraLight, ESnet, AARNET, NLR KAREN, CANARIE 10Gbit/s IRNC-GLORIAD KREONet2 10Gbit/s CANARIE ASGC 1Gbit/s ASGC SURFnet KREONet2 1Gbit/s 10Gbit/s -US IRNC-GLORIAD GLORIAD-US Chicago Internet2, ESnet, ASGCnet, CERN, MREN, TWAREN, GLORIAD-US, CANARIE Amsterdam IRNC-GLORIAD C-WAVE N*10Gbit/s 15Gbit/s IRNC-GLORIAD CANARIE 1Gbit/s KREONet2 10Gbit/s KRLight Topology - Mar, 2013 (Buseung Cho, bscho@kisti.re.kr) KREONet2 <- supplies connection KREONet2 <- controls/operates connection Peering with KREONet2GOLE (or transit) (KREONet2) (KREONET) Chicago, USA 10Gbit/s(P) (KREONet2) Hong Kong KREONet2 10Gbit/s KREONet2 10Gbit/s

5. Daejeon Seattle Chicago Hong Kong 10Gbps (OC192/STM64 ) 2.5Gbps (OC48 )GLORIAD-KR