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clocking ISPs' links
I am now in the middle of a switching period between ISPs, so I'm doing
some ping and traceroutes checks to popular sites, as long as I'm
connected to both.
these are done at various times around the clock to be fair to the ISPs,
but mainly at the evening hours, which count the most to the majority of
the users. Clocking of the same site was always done on the same minute or
two through all the sites, my numbers are compiled from about 7-8 tests
for each cell in the table below, over the last 48 hours. I have here
clocking of only Netmedia, Euronet (Internet Gold) and IBM (through
Machba, HUJI to be exact). please try to add your clocking, and
confirm or negate my times, so we have some country-wide scale to compare
to.
(values are number of hops, minimax times in miliseconds and max packet
loss rates over a minute when more than 10%. Destinations are popular
sites I picked up randomly)
source -> |Euronet |Netmedia |HUJI
----------------\ | | |
destination: \ | | |
\ | | |
www.inter.net.il | 2 45-49 | 4 83-116 | 8 50-113 22%
www.netmedia.net.il | 6 106-167 55% | 4 61-72 |10 72-122
www.huji.ac.il | 6 113-207 31% | 6 120-153 | 5 9-17
www.yahoo.com |12 717-890 28% |13 728-1397 |18 709-801
www.altavista. | 9 712-900 11% |10 743-756 13% |14 726-868
digital.com | | |
ftp.cdrom.com | 7 718-736 |13 753-804 |17 721-800
www.geocities.com |12 712-1452 70% |17 737-1305 17% |21 723-834 38%
www.netscape.com | 9 710-754 12% |13 730-951 11% |15 706-811
| | |
Abnormal values (probably due to routing faults) showed up only twice,
both at Euronet (ping to yahoo at 3500-4500ms, geocities at 2500ms), so I
discarded them even though I know those are dayly occurenses, from my poor
experiance:
1 10.0.26.1 (10.0.26.1) 46.224 ms 47.347 ms 46.419 ms
2 agis-euronet.trenton.agis.net (205.137.62.81) 1668.91 ms 1585.22 ms
Euronet's line flaps between 650ms and sometimes up to 3500ms during
the evenings. I have not seen a similar phenomenon at other ISPs' yet -
the most I saw added to the US response time at peek hours is 200-300ms at
the other places. (I think you can understand why I'm leaving Euronet)
If you consider the fact I was measuring in huji from a computer 6 hops
away from the shiber (link to IBM) which adds roughly 20-25 ms to all the
measurements, it seems that IBM has the shortest routes and at dead times
(i.e. 4 am) is the fastest to link through. a few tests from Aquanet (also
using IBM) show the routes are 3 hops closer than my HUJI measurements and
about the same in response time. From my experiance with connections
through Machba, I expected much higher packet loss ratios, the lack of
which I can explain only by assuming IBM had added to it's bandwidth (I
think I heard something about a new T1 lately... Hank?)
Guy Rosen <grosen@idc.ac.il> is maintaining the ISP list, and I host it on
my site at http://www.site.co.il/isp/ . Lately he asked for stats and
figures from dialup users of the various ISPs in order to give a better
idea of the public's opinions on Israeli ISPs. I think both new and old
ISPs should have a good interest to appear and be updated in his site, if
you are a technical employee of an ISP, please forward this to the
marketting people. The ISP list is the most complete we know in Israel,
and certainly the most detailed one, and it is a fact it is pointed at by
many popular Israeli sites and indexes: Walla, isoc.il's site, Yahoo,
Neystadt's site, Nadav Harel's Israeli site list, Netking, Agmonet. I hope
you help him to keep the site up-to-date and useful.
-------------------------------------------------------------
Ira Abramov <ira@scso.com> Scalable Solutions
SITE Web Presence ("webspace for rent") http://www.site.co.il
Beeper 91826 at 058-212121 FAX (972)2-643-0471
POBox 3600, Jerusalem 91035, Israel Tel (972)2-642-6822
http://www.scso.com/~ira Check out: http://www.linux.org.il