On Fri, Mar 20, 2009 at 10:16 AM, Rainer Duffner <rainer at ultra-secure.de> wrote: > Lanny Marcus schrieb: >> On Mon, Mar 16, 2009 at 12:17 PM, Lanny Marcus <lmmailinglists at gmail.com> wrote: >>> The web site for CentOS is not responding. I can ping it OK, but the >>> web site is not responding to http requests from my browser. If the >>> webmaster should happen to read this... >> >> As I posted late yesterday afternoon, the problem went away a few days >> ago, but then began again, yesterday. I can ping the server and >> traceroute to it, but no http for me from centos.org again. <snip> > > FYI: this is what I get from my colo'ed box in >Germany: <snip> > This got me thinking and I ran mtr (with -c 10 -r): Rainer: Thank you! mtr is a new command for me. Here's what I got; [root at dell2400 ~]# mtr -c 10 -r centos.org dell2400.homelan Snt: 10 Loss% Last Avg Best Wrst StDev ipcop233 0.0% 0.3 0.4 0.3 1.5 0.4 192.168.1.1 0.0% 1.0 1.1 0.8 3.2 0.7 dsl-emcali-190.1.240.1.emcali.net.co 0.0% 12.8 15.7 12.8 17.4 1.5 172.16.1.3 0.0% 13.5 21.5 12.0 57.1 14.7 190.90.2.25 0.0% 36.4 74.4 36.4 173.0 46.3 so-4-2-3-nmi-core01.nwnnetwork.net 0.0% 73.9 81.0 73.9 124.4 15.4 ge-1-1-0-nmi-core02.columbus-networks.com 0.0% 74.5 79.7 74.5 85.7 3.9 xe-8-0-0.edge2.Miami1.Level3.net 0.0% 81.3 84.7 81.3 106.1 7.5 ae-31-51.ebr1.Miami1.Level3.net 0.0% 87.5 89.9 84.0 105.2 6.4 ae-2.ebr1.Dallas1.Level3.net 0.0% 117.2 119.7 110.0 140.1 10.2 ae-61-61.csw1.Dallas1.Level3.net 0.0% 111.8 116.1 110.7 125.6 4.8 ae-12-69.car2.Dallas1.Level3.net 0.0% 111.6 145.3 109.9 249.0 55.1 DATABANK-HO.car2.Dallas1.Level3.net 0.0% 112.0 112.7 109.7 119.4 2.9 ae_cw_10g.databank.com 0.0% 111.6 113.6 110.7 126.5 4.8 pod22h_ae.layeredtech.com 0.0% 116.8 115.5 110.7 139.7 8.7 ??? 100.0 0.0 0.0 0.0 0.0 0.0 162.194.232.72.static.reverse.ltdomains.com 10.0% 111.4 117.4 110.9 140.3 9.8 [root at dell2400 ~]# > So, from this point of view, L3 seems to be losing >some packets. At the end, when I ran the mtr command you used, ??? is losing 100% at one router within layered tech.com (the hop after pod22h_ae.layeredtech.com) and the next one, 162.194.232.72.static.reverse.ltdomains.com is losing10%? In the loss column, the 2 at the end are within the Layered Tech DC, so it does not look like this is a problem with Level3. Thank you!