I am having problems with people connecting from the
East Coast to my AS 17021 via qwest AS 209 on the West
Coast. How do I troubleshoot this?
I would suggest to check up on a view route-servers, do some
traceroutes, etc.
telnet route-views.oregon-ix.net
telnet route-server.cerf.net
and do some bgp queries
(show ip bgp <your address range>)
Philip,
Go to a looking glass site and see what the 'internet' knows about your network. You can look for your netblocks and see if their are in BGP tables of routers around the globe
http://www.bgp4.as/looking-glasses
-Matt
Big fiber cut in Radium Colorado at around 6:30 UTC, affecting lots of
crosscountry transport via northern paths.
Don't know if I would go that far, seeing as there is no useful content
there. Honestly, the sooner that I2 folks realize that they are neither
the center of the Internet, nor even a particularly large customer of just
one commercial carrier, the better off they will be when they have to deal
with the real world. 
Interestingly, this is the only thing I could find on the subject:
http://www.thedenverchannel.com/news/5083804/detail.html
I haven't found anyone other than Qwest and GX (who share a common build
here) affected so far, but there hasn't really been much discussion on the
subject. While this is certainly a decemt amount of impact, I don't think
anyone with a decently built network is suffering unduely (this is why
there are southern paths :P).
Last report I heard on the subject a couple of hours ago was that Qwest
had not begun splicing but is standing by to do so as soon as the scene is
cleared.