On 26 May 2011, at 10:54, Martin T wrote: > I have a 1U server in the data-center, which is connected trough > digital distribution frames to ISP Cisco 4500 series switch and from > this switch to Cisco 7200 series router. ISP switch and router are in > the same room(room A). Server is in another room(room B). Previous > weekend I noticed heavy packet loss to my server and when I connected > to the server over out-of-band management(another ISP, no equipment in > room A) and pinged the default gateway of my server(Cisco 7200 in room > A) results were around 90% packet loss. I'm aware, that there was some > sort of AC malfunction in room A and that was the reason ISP provided > to me in order to explain this heavy packet loss, but how could > increase of temperature cause such packet loss?
Maybe look wider - what if one of their switches failed upstream and you and others were going through an alternate switched path with insufficient bandwidth to cater for failover - say, 10Mbps in failover versus 1Gbps in live. Peter _______________________________________________ cisco-nsp mailing list cisco-nsp@puck.nether.net https://puck.nether.net/mailman/listinfo/cisco-nsp archive at http://puck.nether.net/pipermail/cisco-nsp/
