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Ebone mel po upgrade problemy
jak jsme jiz informovali 30.12., sit EBONE posilila a vybudovala dva nove EBS systemy - v USA ve meste Pennsauken a v Dansku v Kodani (Copenhagen). Spoj Mnichov - Kodan disponuje na mezistatni trasu na evropske pomery znacnou kapacitou - zdroje hovori o 140 Mbps. O spoji Kodan - Stockholm zatim zadne informace k dispozici nemame, ale vzhledem k tomu, ze trasa jde z casti i pod morem, kde jsou problemy s pokladanim optickych kabelovych tras nejnizsi, verim tomu, ze i tam je kapacita spoje velmi slusna. Take se musim opravit, staty, na jejichz uzemi se naleza vice nez jeden EBS (Ebone Boundary System) jsou tri, a totiz USA (s EBS New York a Pennsauken), Nemecko (s EBS Frankfurt a Mnichov) a Svycarsko (s EBS Zeneva a Zurich) - a nakonec, kdyby nedoslo k rozpadu Ceskoslovenska, tak i na nasem uzemi by byly dva EBS systemy (v Praze a v Blave).
Nicmene venujme se dulezitejsim vecem a temi byly potize, ktere nastaly diky tomu, ze traffic do zamori (ale i treba do Velke Britanie) je nyni smerovan pres Kodan a Stockholm (namisto smerovani pres Frankfurt) a trvaly az do dnesniho dne. S kapacitou trasy nesouvisi, ale souvisi s tim, ze nektere TCP stacky maji (zcela v souladu s RFC) omezeni na 30 hopu (pruchozich systemu). A ted pocitejte se mnou:
Tracing route to gandalf.globalnet.co.uk [194.126.80.101]
over a maximum of 30 hops:
1 23 ms <10 ms <10 ms nejaky.mistni.router
2 1 ms 2 ms 2 ms nejaky.router.na.pasnet.cz
3 3 ms 3 ms 3 ms rac.pasnet.cz [194.108.3.190]
4 4 ms 3 ms 3 ms rab.cesnet.cz [194.108.60.1]
5 8 ms 8 ms 6 ms PRAGUE-EBS1-s0-0-1.ebone.net [192.121.157.65]
6 14 ms 10 ms 10 ms munich-ebs2-s1-1-0.ebone.net [192.121.158.185]
7 16 ms 13 ms 14 ms munich-ebs1-p1-0-0.ebone.net [192.121.158.169]
8 24 ms 22 ms 13 ms munich-core1-p0-1.ebone.net [195.158.226.137]
9 34 ms 32 ms 30 ms copenhagen-core2-p0-3.ebone.net [195.158.226.113]
10 32 ms 31 ms 33 ms copenhagen-core1-p0-0.ebone.net [195.158.226.101]
11 47 ms 47 ms 43 ms stockholm-core1-p0-1.ebone.net [195.158.226.81]
12 44 ms 46 ms 52 ms stockholm-ebs1-p0-0-0.ebone.net [195.158.226.74]
13 126 ms 128 ms 129 ms 198.67.142.205
14 127 ms 126 ms 131 ms 198.67.142.249
15 127 ms 128 ms 126 ms icm-tl2-10-P5-0-STM1.icp.net [198.67.142.117]
16 135 ms 129 ms 127 ms icm-tl2-11-P5-0-OC3C.icp.net [198.67.142.122]
17 126 ms 129 ms 142 ms icm-pen-11-P1-0-STM1.icp.net [198.67.142.77]
18 127 ms 130 ms 125 ms icm-bb11-pen-0-3.icp.net [198.67.133.49]
19 129 ms 140 ms 125 ms icm-bb4-pen-4-0-0.icp.net [198.67.133.66]
20 127 ms 135 ms 127 ms sprint-nap.cerf.net [192.157.69.5]
21 127 ms 134 ms 134 ms pos0-0-0-155M.phl-bb1.cerf.net [134.24.46.170]
22 137 ms 135 ms 134 ms atm0-0-4.nyc-bb4.cerf.net [134.24.29.181]
23 133 ms 130 ms 131 ms pos12-0-0-155M.nyc-bb3.cerf.net [134.24.29.165]
24 127 ms 130 ms 128 ms gxn-gw.nyc-bb5.cerf.net [134.24.130.114]
25 136 ms 135 ms 139 ms hs8-0-0-llb-ny1.TH1.core.rtr.xara.net [194.143.164.161]
26 133 ms 135 ms 131 ms fd1-0-0-llb-x-many.TH25.core.rtr.xara.net [194.143.163.35]
27 135 ms 133 ms 129 ms fd5-1-0-llb-x-many.th7.core.rtr.xara.net [194.143.163.34]
28 136 ms 127 ms 132 ms hs4-0-llb-x-th7.TH26.core.rtr.xara.net [194.143.164.33]
29 131 ms 132 ms 133 ms th16-fe0.global.net.uk [194.126.82.11]
30 134 ms 131 ms 130 ms columbus-s0.global.net.uk [194.126.66.254]
Cili 30 hopu prekroceno. Dnes uz nastesti vypada situace ponekud jinak:
traceroute to gandalf.globalnet.co.uk (194.126.80.101), 30 hops max, 40 byte packets
1 tag.cesnet.cz (194.108.117.165) 299 ms 287 ms 449 ms
2 serv-rae.anet.cz (194.50.6.129) 259 ms 137 ms 269 ms
3 rab.cesnet.cz (194.108.60.1) 269 ms 227 ms 359 ms
4 PRAGUE-EBS1-s0-0-1.ebone.net (192.121.157.65) 349 ms 277 ms 169 ms
5 munich-ebs2-s1-1-0.ebone.net (192.121.158.185) 259 ms 297 ms 279 ms
6 munich-ebs1-p1-0-0.ebone.net (192.121.158.169) 159 ms 367 ms 189 ms
7 munich-core1-p0-1.ebone.net (195.158.226.137) 269 ms 147 ms 259 ms
8 frankfurt-core2-p0-1.ebone.net (195.158.226.146) 489 ms 337 ms 769 ms
9 frankfurt-core1-p0-0.ebone.net (195.158.226.165) 439 ms 507 ms 259 ms
10 new-frankfurt-ebs1-p4-0-0.ebone.net (195.158.226.170) 529 ms 268 ms 251 ms
11 pennsauken-ebs1-s5-0-0.ebone.net (195.158.224.73) 419 ms 497 ms 661 ms
12 198.67.133.109 (198.67.133.109) 1037 ms 2088 ms 2799 ms
13 sprint-nap.cerf.net (192.157.69.5) 2380.03 ms 1150 ms 2231 ms
14 pos0-0-0-155M.phl-bb1.cerf.net (134.24.46.170) 1813 ms 266 ms 330 ms
15 atm0-0-4.nyc-bb4.cerf.net (134.24.29.181) 678 ms 618 ms 799 ms
16 pos12-0-0-155M.nyc-bb3.cerf.net (134.24.29.165) 1029 ms 1047 ms 559 ms
17 gxn-gw.nyc-bb5.cerf.net (134.24.130.114) 689 ms 347 ms 469 ms
18 hs8-0-0-llb-ny1.TH1.core.rtr.xara.net (194.143.164.161) 699 ms 387 ms 329 ms
19 fd1-0-0-llb-x-many.TH25.core.rtr.xara.net (194.143.163.35) 379 ms 518 ms 408 ms
20 fd5-1-0-llb-x-many.TH7.core.rtr.xara.net (194.143.163.34) 299 ms 607 ms 700 ms
21 hs4-0-llb-x-th7.TH26.core.rtr.xara.net (194.143.164.33) 368 ms 257 ms 539 ms
22 th16-fe0.global.net.uk (194.126.82.11) 309 ms 868 ms 261 ms
23 columbus-s1.global.net.uk (194.126.66.249) 257 ms 697 ms 879 ms
24 gandalf.globalnet.co.uk (194.126.80.101) 1179 ms 2027 ms 2739 ms
A jeste neco? Ano, snad jen, ze nova topologie site Ebone, kteoru Ebone oficialne uvadi jako skutecnou topologii sve site a kterou muzete videt zde:
je chybna (tedy, pokud mi ji mezi tim pod rukou nezmeni, ale kvuli autorskym pravum si ten obrazek nechci kopirovat na svuj disk), nebot zde chybi spoj Coppenhagen-Stockholm, ktery prokazatelne existuje (mezi adresami 195.158.226.101 a 195.158.226.81). Dodat se k tomu snad da jen tolik, ze popularni ceske heslo Bordel neni jenom u nas ma celosvetovou platnost.
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