Routing weirdness
Posted on September 14, 2003 @ 14:01 in General
[Note: the traceroutes, contained in a PRE block, provided in this post have been edited out, because Internet Explorer fails do deal properly with the CSS overflow directive. This is the umpteenth really nasty flaw in IE that makes life rather complicated for webdesigners. Please switch to Mozilla Firebird or Opera that do support the most elementary web standards and generally present less of a security hazard than Microsoft products. Thank you so much.]
There's something rather odd going on with the university's routing (or rather, surf.net's routing). For some reason, many of the transatlantic sites are unreachable. For instance, I cannot reach www.userfriendly.org or www.bloglines.com and these sites do not even resolve when I do a DNS lookup. Strangely, sites like for instance philringnalda.com or zeldman.com do resolve and I can reach them with my browser, but I cannot do a traceroute to their location.
[traceroute to philringnalda.com snipped because of IE rendering problems]
Doing a traceroute from another provider's shell server, however, doesn't show the same problems:
[second traceroute to philringnalda.com snipped because of IE rendering problems]
So, my best guess is that there's something odd happening in the Dutch universities' backbone service provider Surfnet. Hopefully they fix it soon. Luckily Dutch sites and other European sites such as jill/txt and Anders Jacobsen are still available.
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can you traceroute to their ip's? in short is it a resolution or routing problem? have you tried adding a freedns server to your dns servers to see if you can get around it?
Posted by jeremy hunsinger on September 14, 2003 @ 17:43
Some sites, most notably www.userfriendly.org, would not resolve through the university's DNS servers, nor through an alternate ISP's DNS servers. So, yes, I tried alternative DNS servers, but not a free one.
Most problems appear to have been resolved in the meantime.
The weird thing is that I _can_ access a site like www.bloglines.com, but I simply cannot get a traceroute to work to that location; the traceroute stops at the border of the surf.net domain.
Userfriendly.org is still completely gone for me, while sites like philringnalda.com and many others _do_ allow a traceroute to complete. Oh well.
Posted by Frank on September 14, 2003 @ 19:10
well i have a feeling that this was due to an Internet 2 routing problem that i experienced too, it has since been fixed.
Posted by jeremy hunsinger on September 18, 2003 @ 17:38
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