The system was not changed last 6 months. I've got latest verion of the firmware of the switches. I alredy solved the issue. I reconfigure the swtches and i enable some optimizations on them. Aftwerards i've teamed the NICs on the server and i reboot the whole infrastructure. All is running good since like  10 hours ago.
Hello, I have configuration of server Power Edge T610 which is connected to switch Powerconnect 5548 (2 switches in stack), and like 50 PCs connected to same infrastructure. Everything was running smooth as silk until one day when the Power Edge server crashed due hardware error (caused by extention card for USB3 Support). Aftwerwards i am issuing really slow local network performance. The T610 server is used for file server and its running on Windows Server 2008 R2 Datacenter x64. I've tryed everything: - Update of NIC drivers - I try different NICs - disable/enable netsh settings chimney/rss/autotuning - disable/enable offload settings - I try to enable/disable AV  But noting. On the LAN, most of computers are running on windows (xp,vista,7) and some on *nix (debian, freebsd, openbsd, suse). Transfer between all computers in all directiuons is slow (max speed i've got was like 8mb/s, transfering file from the poweredge server to my laptop running on debian). I run out of ideas, so plsease give any suggestions to solve this issue. Thanks in advantage!
Dell PE T610 & PowerConnect 5548 slow LAN issue