Subject:
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Re: cannot connect to site / lack of support from MediaOne.net - DAY THREE (KMM78820C0KM) [lego]
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Newsgroups:
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lugnet.cad.dev.org.ldraw
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Date:
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Thu, 7 Sep 2000 08:07:00 GMT
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Viewed:
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837 times
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"Franklin W. Cain" <fwcain@yahoo.com> wrote in message
news:20000822183735.28733.qmail@web121.yahoomail.com...
> I *was* able to successfully trace route to www.ldraw.org
> by increasing the maximum number of hops. Here is the trace route:
This indicates that there is no problem sending packets to www.ldraw.org,
and that they are coming back to you, but if there is a routing problem and
the packets are coming back via a different route to your PC that could be
why you can't access it via a web browser. Tracert (and ping) use ICMP
packets which don't require the returning data to follow the same route, but
HTTP uses TCP which does appear to require this (I've had problems here
trying to get my firewall working with 2 different ISPs for 2 different sets
of servers and ran into exactly the same behaviour where ping/tracert worked
but HTTP didn't).
I've compared your tracert and mine and I noticed that they take the same
route once they've got into bbnplanet in NY as shown by this line
11 44 ms 45 ms 46 ms p6-0.nycmny1-br1.bbnplanet.net [4.24.6.58]
and
#10 p6-0.nycmny1-br1.bbnplanet.net (4.24.6.58): TTL Exceeded, ttl=243, 101
ms
As you can see your connection is quicker than mine, but you hit this router
on your 11th hop where it's the 10th on mine. Just that 1 hop could be
enough to cause the problems. It may be that there are just too many routers
between you and bbnplanet for the TCP packets to be able to travel
correctly, or 1 of them in between may be dropping packets for
www.ldraw.org - to determine this you would need to get hold of your ISP and
get them to check. If someone 1 hop upstream from you can connect OK but
anyone else at the same level as you can't then the only option will be to
find an ISP that has fewer hops to www.ldraw.org.
Dan
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