Hi Franz, I believe it depends on what is currently being cached by the server. If you're downloading a file which has not been downloaded before, the download speed might be low.
My DNS resolves cdn.juniper.net as 184.50.174.254, but if I force wget to use 23.37.55.189 I get couple of MB/s when downloading your file. $ wget --no-check-certificate --header "Host: cdn.juniper.net" " https://23.37.55.189/software/junos/18.1R1.9/junos-install-mx-x86-64-18.1R1.9.tgz?[..] " --2018-03-29 16:12:01-- https://23.37.55.189/software/junos/18.1R1.9/junos-install-mx-x86-64-18.1R1.9.tgz?[. .] Connecting to 23.37.55.189:443... connected. WARNING: certificate common name ‘cdn.juniper.net’ doesn't match requested host name ‘23.37.55.189’. HTTP request sent, awaiting response... 200 OK Length: 2726046587 (2.5G) [application/octet-stream] Saving to: junos-install-mx-x86-64-18.1R1.9.tgz?[..] 4% [=======> ] 132,318,152 11.0MB/s eta 3m 15s 8% [=============> ] 221,542,816 11.8MB/s eta 3m 16s 10% [=================> ] 289,954,792 11.6MB/s eta 3m 12s 11% [====================> ] 326,848,336 11.6MB/s eta 3m 10s However, if I choose to download other file (which I presume is not downloaded that often) the speed is much lower. $ wget --no-check-certificate --header "Host: cdn.juniper.net" " https://cdn.juniper.net/software/junos/17.4R1.16/junos-install-media-usb-mx-x86-64-17.4R1.16-limited.img.gz?[..] " --2018-03-29 16:17:09-- https://cdn.juniper.net/software/junos/17.4R1.16/junos-install-media-usb-mx-x86-64-17.4R1.16-limited.img.gz?[. .] Resolving cdn.juniper.net (cdn.juniper.net)... 2.20.170.159 Connecting to cdn.juniper.net (cdn.juniper.net)|2.20.170.159|:443... connected. HTTP request sent, awaiting response... 200 OK Length: 2692264219 (2.5G) [application/x-gzip] Saving to: unos-install-media-usb-mx-x86-64-17.4R1.16-limited.img.gz?[..] 0% [> ] 26,432,656 1.60MB/s eta 27m 1s 7% [===========> ] 191,396,744 1.22MB/s eta 28m 47s 8% [=============> ] 222,051,768 882KB/s eta 29m 16s Couple of minutes later, I get much better results for the same file: $ wget --no-check-certificate --header "Host: cdn.juniper.net" " https://cdn.juniper.net/software/junos/17.4R1.16/junos-install-media-usb-mx-x86-64-17.4R1.16-limited.img.gz?[..] " --2018-03-29 16:25:28-- https://cdn.juniper.net/software/junos/17.4R1.16/junos-install-media-usb-mx-x86-64-17.4R1.16-limited.img.gz?[. .] Resolving cdn.juniper.net (cdn.juniper.net)... 2.20.170.159 Connecting to cdn.juniper.net (cdn.juniper.net)|2.20.170.159|:443... connected. HTTP request sent, awaiting response... 200 OK Length: 2692264219 (2.5G) [application/x-gzip] Saving to: junos-install-media-usb-mx-x86-64-17.4R1.16-limited.img.gz?[..] 2% [===> ] 65,205,360 11.5MB/s eta 2m 56s 4% [=======> ] 129,117,560 11.7MB/s eta 3m 12s 6% [===========> ] 187,499,696 13.3MB/s eta 3m 13s 7% [===========> ] 192,402,672 11.6MB/s eta 3m 13s That's how cache server works... HTH, Regards, Wojciech 2018-03-28 18:15 GMT+02:00 Franz Georg Köhler <li...@openunix.de>: > Is cdn.juniper.net always slow? It only delivers between 500 and 1000 > kilobit per > second to me while the traceroute looks fine and I am used to much faster > downloads from Akamai: > > $ wget "https://cdn.juniper.net/software/junos/18.1R1.9/junos- > install-mx-x86-64-18.1R1.9.tgz[...]" > --2018-03-28 17:30:14-- https://cdn.juniper.net/ > software/junos/18.1R1.9/junos-install-mx-x86-64-18.1R1.9.tgz[...] > Auflösen des Hostnamen »cdn.juniper.net (cdn.juniper.net)«... 23.37.55.189 > Verbindungsaufbau zu cdn.juniper.net (cdn.juniper.net)|23.37.55.189|:443... > verbunden. > HTTP-Anforderung gesendet, warte auf Antwort... 200 OK > Länge: 2726046587 (2,5G) [application/octet-stream] > In »»junos-install-mx-x86-64-18.1R1.9.tgz[...]«« speichern. > > junos-install-mx-x86-64-18.1R1.9.tgz?SM_US 100%[========================= > ===============================================================>] > 2,54G 933KB/s in 39m 37s > > 2018-03-28 18:09:51 (1,09 MB/s) - > »»junos-install-mx-x86-64-18.1R1.9.tgz[...]«« > gespeichert [2726046587/2726046587] > > > $ mtr -r -w 23.37.55.189 > Start: Wed Mar 28 18:13:48 2018 > HOST: hermes Loss% Snt > Last Avg Best Wrst StDev > 1.|-- gw-corpserv.dabuk47DB.frankfurt.de.velia.net 0.0% 10 > 59.7 7.9 1.3 59.7 18.2 > 2.|-- gauss.router.frankfurt.de.velia.net 0.0% 10 > 0.3 0.3 0.3 0.3 0.0 > 3.|-- ae4.cr-antares.fra10.core.heg.com 0.0% 10 > 0.5 0.4 0.3 0.9 0.0 > 4.|-- ae2.cr-polaris.fra1.core.heg.com 0.0% 10 > 0.4 1.4 0.4 9.9 3.0 > 5.|-- ??? 100.0 10 > 0.0 0.0 0.0 0.0 0.0 > 6.|-- a23-37-55-189.deploy.static.akamaitechnologies.com 0.0% 10 > 0.8 0.8 0.8 0.9 0.0 > > > _______________________________________________ > juniper-nsp mailing list juniper-nsp@puck.nether.net > https://puck.nether.net/mailman/listinfo/juniper-nsp > _______________________________________________ juniper-nsp mailing list juniper-nsp@puck.nether.net https://puck.nether.net/mailman/listinfo/juniper-nsp