[ITNOG] GTT: congestione giornaliera Milano

Brian Turnbow b.turnbow@twt.it
Lun 7 Feb 2022 17:23:31 CET


Giusto per info a tutti

Io lo vedo sempre  tra   cr6.fra e cr2.mil
ae18.cr6-fra2.ip4.gtt.net (154.14.78.153) [AS8355/AS3257]  5.256 ms  5.222 ms  5.506 ms  5.495 ms  5.899 ms
ae17.cr2-mil3.ip4.gtt.net (89.149.128.26) [AS3257]  81.798 ms  91.305 ms  91.660 ms  37.083 ms  52.425 ms

altri percorsi fra-mil non sono impatatti


da aws

46.33.66.6 | Traceroute from AWS AS16509 in Germany, Frankfurt 20 ip4.gtt.net (46.33.66.6) [AS3257] 10.918 ms * * * *
traceroute to 46.33.66.6 (46.33.66.6), 50 hops max, 60 byte packets
1  ec2-54-93-0-75.eu-central-1.compute.amazonaws.com (54.93.0.75) [AS16509/AS14618]  64.053 ms  64.039 ms ec2-54-93-0-81.eu-central-1.compute.amazonaws.com (54.93.0.81) [AS16509/AS14618]  47.403 ms ec2-54-93-0-85.eu-central-1.compute.amazonaws.com (54.93.0.85) [AS16509/AS14618]  1.116 ms  1.100 ms
2  243.253.18.250 (243.253.18.250) [*]  0.203 ms 243.253.21.254 (243.253.21.254) [*]  0.249 ms 243.253.22.242 (243.253.22.242) [*]  0.283 ms  0.267 ms 243.253.18.250 (243.253.18.250) [*]  0.189 ms
3  240.0.88.29 (240.0.88.29) [*]  0.170 ms 240.0.88.17 (240.0.88.17) [*]  0.181 ms 240.0.88.18 (240.0.88.18) [*]  0.171 ms 240.0.88.16 (240.0.88.16) [*]  0.162 ms 240.0.88.18 (240.0.88.18) [*]  0.221 ms
4  242.1.84.241 (242.1.84.241) [*]  0.571 ms 242.1.84.225 (242.1.84.225) [*]  0.360 ms 242.1.84.241 (242.1.84.241) [*]  0.669 ms 242.1.84.97 (242.1.84.97) [*]  0.389 ms 242.1.84.225 (242.1.84.225) [*]  0.137 ms
5  100.95.20.142 (100.95.20.142) [*]  9.217 ms 100.95.4.129 (100.95.4.129) [*]  3.351 ms 100.95.20.136 (100.95.20.136) [*]  0.711 ms 100.95.20.131 (100.95.20.131) [*]  1.306 ms 100.95.20.140 (100.95.20.140) [*]  1.219 ms
6  100.100.4.68 (100.100.4.68) [*]  0.702 ms 100.100.2.32 (100.100.2.32) [*]  0.704 ms 100.100.4.72 (100.100.4.72) [*]  1.456 ms 100.100.4.4 (100.100.4.4) [*]  1.483 ms 100.100.4.14 (100.100.4.14) [*]  1.456 ms
7  154.14.134.248 (154.14.134.248) [AS8355/AS3257]  9.159 ms ae7-74.cr1-fra6.ip4.gtt.net (213.254.216.125) [AS3257]  1.207 ms 154.14.134.248 (154.14.134.248) [AS8355/AS3257]  8.925 ms 154.14.139.244 (154.14.139.244) [AS8355/AS3257]  0.970 ms ae7-74.cr1-fra6.ip4.gtt.net (213.254.216.125) [AS3257]  2.406 ms
8  ae17.cr2-mil3.ip4.gtt.net (89.149.128.26) [AS3257]  85.531 ms  32.440 ms  85.572 ms  9.477 ms  76.126 ms
9  * * * * *

Da hetzner
46.33.66.6 | Traceroute from Hetzner AS24940 in Germany, Nuremberg 11 * * ip4.gtt.net (46.33.66.6) [AS3257] 77.390 ms * *

traceroute to 46.33.66.6 (46.33.66.6), 50 hops max, 60 byte packets
1  172.31.1.1 (172.31.1.1) [*]  16.343 ms  16.848 ms  16.850 ms  16.744 ms  16.843 ms
2  16890.your-cloud.host (136.243.183.14) [AS24940/AS33327]  0.526 ms  0.479 ms  0.484 ms  0.458 ms  0.442 ms
3  * * * * *
4  spine2.cloud1.fsn1.hetzner.com (85.10.251.189) [AS24940]  1.236 ms  0.872 ms spine1.cloud1.fsn1.hetzner.com (85.10.251.185) [AS24940]  0.872 ms spine2.cloud1.fsn1.hetzner.com (85.10.251.189) [AS24940]  0.826 ms  1.207 ms
5  core24.fsn1.hetzner.com (213.239.239.133) [AS24940]  0.345 ms core24.fsn1.hetzner.com (213.239.239.129) [AS24940]  0.484 ms core23.fsn1.hetzner.com (213.239.239.137) [AS24940]  6.960 ms  6.970 ms core24.fsn1.hetzner.com (213.239.239.133) [AS24940]  0.296 ms
6  core1.fra.hetzner.com (213.239.203.153) [AS24940]  7.820 ms  5.190 ms core1.fra.hetzner.com (213.239.229.77) [AS24940]  4.928 ms core1.fra.hetzner.com (213.239.203.153) [AS24940]  4.906 ms core1.fra.hetzner.com (213.239.229.77) [AS24940]  8.812 ms
7  ae18.cr6-fra2.ip4.gtt.net (154.14.78.153) [AS8355/AS3257]  5.256 ms  5.222 ms  5.506 ms  5.495 ms  5.899 ms
8  ae17.cr2-mil3.ip4.gtt.net (89.149.128.26) [AS3257]  81.798 ms  91.305 ms  91.660 ms  37.083 ms  52.425 ms
9  * * * * *
10  * * * * *
11  * * * * *
12  * * * * *
13  * * ip4.gtt.net (46.33.66.6) [AS3257]  66.930 ms * *


Da google
46.33.66.6 | Traceroute from Google AS15169 in Germany, Frankfurt 5 * ip4.gtt.net (46.33.66.6) [AS3257] 94.846 ms * * *

traceroute to 46.33.66.6 (46.33.66.6), 50 hops max, 60 byte packets
1  ae8.cr6-fra2.ip4.gtt.net (46.33.79.249) [AS3257]  17.992 ms  17.975 ms  17.960 ms  17.932 ms  18.073 ms
2  ae17.cr2-mil3.ip4.gtt.net (89.149.128.26) [AS3257]  77.504 ms  87.772 ms  87.777 ms  55.593 ms  77.529 ms
3  * * * * *
4  * * * * *
5  * ip4.gtt.net (46.33.66.6) [AS3257]  94.846 ms * * *

Suggerisco di aprire TT se avete GTT come transit





BRIAN TURNBOW
CTO

TWT S.p.A.

> -----Original Message-----
> From: itnog <itnog-bounces@lists.itnog.it> On Behalf Of Lukas Tribus
> Sent: Monday, February 7, 2022 3:23 PM
> To: itnog@lists.itnog.it
> Subject: [ITNOG] GTT: congestione giornaliera Milano
> 
> Buon giorno,
> 
> 
> vi informo, magari a qualcuno serve questa informazione, che da una
> settimana ca, riscontriamo congestione giornaliera sulla rete GTT fra
> Francoforte e Milano.
> 
> La congestione inizia nel primo pomeriggio e incrementa pian piano, con un
> peak la sera (classico comportamento congestione verso eyeball). I clienti di
> transito di GTT a Milano sono impattati. Il packet-loss misurato domenica sera
> era intorno ai 30% con 200ms di latenza. Nei giorni scorsi i peak erano intorno
> ai 11~12% PL con latenza di oltre 100ms.
> 
> La direzione della congestione  da Francoforte verso Milano, questo  stato
> confermato con vari metodi (incluso rerouting di traffico, Hetzner per
> esempio ha spostato traffico verso i prefissi di TWT da GTT su NTT,
> workaround che funziona ma ovviamente solo per TWT).
> 
> 
> Per misurare in tempo reale (da Hetzner):
> 
> Smokeping (vari destinazioni che evidenziano packet-loss e latenza, verso le
> P2P fra GTT e i suoi clienti ma anche host in quelli reti):
> https://smoke.ltri.eu/smokeping/smokeping.cgi?target=External.GTT
> 
> LG dallo stesso host che fa le misure:
> https://lg.ltri.eu/
> 
> 
> MTR:
> 
> Host 77.43.16.1 (Irideos/ex MC Link) 06/02 20:16 (30% PL, 200ms latenza)
> 
> lukas@htznr2:~$ mtr -rs1000 -c1000 77.43.16.1
> Start: 2022-02-06T20:16:34+0100
> HOST: htznr2                      Loss%   Snt   Last   Avg  Best  Wrst StDev
>   1.|-- _gateway                   0.0%  1000    5.9   4.8   2.4  24.5   1.4
>   2.|-- 10114.your-cloud.host      0.0%  1000    0.4   0.3   0.2   4.8   0.2
>   3.|-- ???                       100.0  1000    0.0   0.0   0.0   0.0   0.0
>   4.|-- 85-10-250-153.clients.you  0.0%  1000    1.2   4.9   0.8  88.6  11.7
>   5.|-- spine12.cloud1.nbg1.hetzn  0.0%  1000    1.0   4.5   0.8  72.9  10.7
>   6.|-- 213-239-239-121.clients.y  0.1%  1000    0.8   2.1   0.4  34.1   3.5
>   7.|-- core1.fra.hetzner.com      0.0%  1000   28.5  12.4   3.5  50.1   8.1
>   8.|-- ae18.cr6-fra2.ip4.gtt.net  0.0%  1000    4.1   6.7   3.6 497.9  18.3
>   9.|-- et-5-1-0.cr0-mil2.ip4.gtt 29.6%  1000  199.6 200.9 163.2 252.7   7.3
>  10.|-- alpikom-gw.ip4.gtt.net    30.1%  1000  200.8 196.6 165.5 213.0   5.1
>  11.|-- gw2-mi-te0100.mclink-net. 31.2%  1000  213.1 211.0 177.5 223.7   5.2
>  12.|-- gw2-rm-gi0001.mclink-net. 30.9%  1000  207.6 205.7 178.3 227.8   5.5
>  13.|-- 213.21.132.39             29.7%  1000  206.3 205.9 174.7 223.1   5.4
>  14.|-- 213.21.132.69             30.6%  1000  212.1 208.7 176.0 225.4   5.8
>  15.|-- 213.21.130.142            32.5%  1000  207.3 205.1 169.0 291.7   7.8
>  16.|-- net77-43-16-001.mclink.it 29.2%  1000  213.6 212.2 174.3 284.2   7.1
> lukas@htznr2:~$
> 
> 
> Host 77.43.16.1 (Irideos/ex MC Link) 07/02 00:30 (qua tutto ok)
> 
> lukas@htznr2:~$ mtr -rs1000 -c1000 77.43.16.1
> Start: 2022-02-07T00:30:15+0100
> HOST: htznr2                      Loss%   Snt   Last   Avg  Best  Wrst StDev
>   1.|-- _gateway                   0.0%  1000    5.7   4.8   2.4  26.1   1.6
>   2.|-- 10114.your-cloud.host      0.0%  1000    0.4   0.3   0.2   2.5   0.2
>   3.|-- ???                       100.0  1000    0.0   0.0   0.0   0.0   0.0
>   4.|-- 85-10-250-153.clients.you  0.0%  1000    1.2   4.6   0.8 101.5  11.3
>   5.|-- spine12.cloud1.nbg1.hetzn  0.0%  1000   24.9   4.1   0.8  81.3  10.5
>   6.|-- 213-239-239-121.clients.y  0.0%  1000    0.7   1.9   0.4  35.9   3.5
>   7.|-- core1.fra.hetzner.com      0.0%  1000    3.7   5.6   3.5  39.8   4.3
>   8.|-- ae18.cr6-fra2.ip4.gtt.net  0.0%  1000    3.8   6.4   3.5  89.0   8.8
>   9.|-- et-5-1-0.cr0-mil2.ip4.gtt  0.0%  1000   18.9  19.3  18.3  74.3   4.2
>  10.|-- alpikom-gw.ip4.gtt.net     0.0%  1000   18.8  18.8  18.6  23.5   0.3
>  11.|-- gw2-mi-te0100.mclink-net.  0.0%  1000   33.3  33.1  32.9  40.4   0.4
>  12.|-- gw2-rm-gi0001.mclink-net.  0.0%  1000   30.3  28.2  27.9  79.8   1.9
>  13.|-- 213.21.132.39              0.0%  1000   28.2  28.1  27.9  66.6   1.5
>  14.|-- 213.21.132.69              0.0%  1000   27.7  27.6  27.4  34.9   0.4
>  15.|-- 213.21.130.142             0.0%  1000   27.5  28.1  27.3 220.7   8.4
>  16.|-- net77-43-16-001.mclink.it  0.0%  1000   30.8  31.4  30.4 148.9   6.7
> lukas@htznr2:~$
> 
> Host 77.43.16.1 (Irideos/ex MC Link) 07/02 14:36 (3% PL, 76ms latenza)
> 
> lukas@htznr2:~$ mtr -rs1000 -c1000 77.43.16.1
> Start: 2022-02-07T14:36:23+0100
> HOST: htznr2                      Loss%   Snt   Last   Avg  Best  Wrst StDev
>   1.|-- _gateway                   0.0%  1000    6.6   4.8   2.4  22.9   1.5
>   2.|-- 10114.your-cloud.host     84.4%  1000    0.3   0.3   0.2   1.4   0.1
>   3.|-- ???                       100.0  1000    0.0   0.0   0.0   0.0   0.0
>   4.|-- 85-10-250-153.clients.you  0.0%  1000    1.1   4.5   0.8  80.8  11.5
>   5.|-- spine12.cloud1.nbg1.hetzn  0.0%  1000    1.2   4.8   0.8 159.2  12.4
>   6.|-- 213-239-239-121.clients.y  0.0%  1000    0.7   2.0   0.4  47.6   4.1
>   7.|-- core1.fra.hetzner.com      9.3%  1000    4.3   5.4   3.5  45.5   4.7
>   8.|-- ae18.cr6-fra2.ip4.gtt.net  0.0%  1000    3.9   5.5   3.6  66.0   5.8
>   9.|-- et-5-1-0.cr0-mil2.ip4.gtt  3.4%  1000   72.1  76.7  21.7 144.2  16.4
>  10.|-- alpikom-gw.ip4.gtt.net     3.5%  1000   73.7  76.5  20.5 111.5  15.8
>  11.|-- gw2-mi-te0100.mclink-net.  2.7%  1000   90.5  91.1  35.7 124.9  15.4
>  12.|-- gw2-rm-gi0001.mclink-net.  3.6%  1000   79.6  86.1  37.7 121.9  15.2
>  13.|-- 213.21.132.39              3.7%  1000   75.8  85.8  32.3 117.6  15.6
>  14.|-- 213.21.132.69              3.0%  1000   78.4  87.7  30.9 330.5  20.2
>  15.|-- 213.21.130.142             3.4%  1000   79.7  87.8  30.3 224.9  18.4
>  16.|-- net77-43-16-001.mclink.it  5.0%  1000   93.7  91.9  36.4 210.8  18.4
> lukas@htznr2:~$
> 
> 
> Smokeping Host 77.43.16.1 (Irideos/ex MC Link):
> https://smoke.ltri.eu/smokeping/smokeping.cgi?displaymode=n;start=2022-
> 02-06%2003:32;end=now;target=External.GTT.AS5396IRIDEOShost
> 
> MTR storici:
> 2022-02-01T19:10
> https://pastebin.com/raw/MSvuSuR0
> 
> 2022-02-02T18:39
> https://pastebin.com/raw/zWD8GHGa
> 
> 2022-02-03T21:33
> https://pastebin.com/raw/DHWDyi1g
> 
> 2022-02-04T14:11
> https://pastebin.com/raw/qhrWZBQX
> 
> 2022-02-06T20:16 (come sopra durante congestione)
> https://pastebin.com/raw/5bcsajmm
> 
> 2022-02-07T00:30 (come sopra in assenza di congestione. qua tutto ok)
> https://pastebin.com/raw/i8PE9PR8
> 
> 2022-02-07T14:36 (come sopra con 3%PL)
> https://pastebin.com/raw/bxhjQwbL
> 
> 
> Un ticket  stato aperto verso GTT il 01/02.
> 
> 
> cheers,
> lukas
> 
> --
> Mailing list info: http://lists.itnog.it/listinfo/itnog


Maggiori informazioni sulla lista itnog