Global crossing is having major issues (since yesterday actually) in Seattle. Every path I see to dfn.de is via gblx and Microsoft hosts most of those sites out of the seattle area so they may be seeing the same issue.
Based on what we can see gblx has a broken port-channel or something similar here as random traffic (into) their network via our transit link gets black-holed. We could not even reach global crossing's own name servers for a while. We gave up and turned down BGP yesterday until we hear from them. Based on graphs at the time things broke they appeared to be black-holing roughly 1/4 of what we were sending them. Thanks, John van Oppen Spectrum Networks / AS 11404 -----Original Message----- From: Thomas Schmid [mailto:sch...@dfn.de] Sent: Thursday, October 07, 2010 6:10 AM To: Heath Jones Cc: nanog@nanog.org Subject: Re: reachability problems Europe->US? Hi, On 07.10.2010 14:35, Heath Jones wrote: >> Seems to be only source-prefix-based, but several ISPs in europe are >> affected. > Can you post source and destination IP's ? source: 131.220.0.0/16, 212.201.68.0/22, 212.201.72.0/21, destination: 65.122.178.73, 63.228.223.104 traceroute to 65.122.178.73 (65.122.178.73), 30 hops max, 40 byte packets 1 er-rz-gig-3-3.stw-bonn.de (131.220.99.62) 1.792 ms 1.275 ms 1.125 ms 2 xr-bon1-te2-3.x-win.dfn.de (188.1.233.193) 0.705 ms 2.132 ms 0.755 ms 3 xr-bir1-te2-3.x-win.dfn.de (188.1.144.9) 1.477 ms 1.936 ms 1.051 ms 4 zr-fra1-te0-7-0-5.x-win.dfn.de (188.1.145.46) 4.034 ms 3.734 ms 4.957 ms 5 64.213.78.237 (64.213.78.237) 3.866 ms 3.295 ms 26.854 ms 6 jfk-brdr-04.inet.qwest.net (63.146.26.225) 119.511 ms 92.735 ms 99.019 ms 7 * * * or quote from DE-CIX tech-list: [www.microsoft.com] ----------- We also have some connectivity problems to ms, changing the bgp routing to another tier 1 carrier don t resolve the problem ----------- Cheers, Thomas
