Odd behavior with fiber line
Posted on 2009-04-06
We have a co-lo with our ISP in a weather hardened facility. The link to this facility is via a 100mbit fiber line (approx 11k ft). We have a server, nas device, and firewall at the co-lo. All Servers are 2k3
I can copy data to the co-lo without issues. When I try to copy the data back to the office I get "network connection timed out". We have tried copying the files via windows explorer and FTP with the same results. The connection will drop with < 50MB transfered. Single or multiple files.
Odd thing is internet traffic and downloads are uneffected. Only thing we are having problems with is copying data back from the co-lo. Files can be transfered fine between the equipment at the co-lo and to the equipment at the co-lo, but when we try to copy it back across the fiber it drops.
Tranceivers at both ends of the fiber have been replaced, We have connected the fiber ends direct to the server at the co-lo and to a laptop at the office with the same result. Tests on the fiber showed everything was good.
Any ideas or suggestions greatly appreciated. We are stumped currently. :(