Ebay Verification?
Hello all - I am hoping to enlist some help in verifying a problem that has affected several users on my network. Here's the deal. Over the course of the last month, we have noticed random timeouts in trying to reach certain IPs on Ebay's web farm. The following IPs seem to crop up repeatedly: 216.113.178.140 216.113.185.41 216.113.178.10 216.113.176.11 We have seen many cases where telnetting to port 80 on these IPs results in a timeout rather than the expected HTTP connection. So far, we have seen the problems most often from Linux boxes, I have not been able to recreate the issue from FreeBSD, OpenBSD or Solaris. I have heard one report of a failure from WindowsXP, but have not seen the problem on Windows myself. We have verified that the issue happens through 2 of our upstreams, Level3 and Cogent. There seem to be some thoughts as to akamai being the possible culprit, specifically as it interacts with Linux. I'm hoping a few of you Linux users out there will give it a shot, telnetting to port 80 on these IPs several times to see if you can get a failure. Any thoughts on this issue are greatly appreciated. -- Mehgan Laveck - Network Engineer Front Range Internet, Inc. mehganl@frii.net - (970) 212-0725
Mehgan Laveck wrote: [Ebay woes]
There seem to be some thoughts as to akamai being the possible culprit, specifically as it interacts with Linux. I'm hoping a few of you Linux users out there will give it a shot, telnetting to port 80 on these IPs several times to see if you can get a failure. Any thoughts on this issue are greatly appreciated.
I once had similar problems which turned out to be due to TCP ECN being enabled. Use tcpdump/tethereal to look at what's going on. Check /proc/sys/net/ipv4/tcp_ecn on the affected boxes. Will
participants (2)
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Mehgan Laveck
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Will Hargrave