Hi Jobst, Brent, and Hakan, Thanks for your inputs. I sincerely appreciate your suggestions and sharing your experience. I have posted a support query with Chelsio as well. In my case the connection is a Fiber cable. On the switch side there is only one 10GB port so there is not much I can do. Luckily the switch and the cable, besides the NIC, has also been supplied by the same vendor. I am going to request the hardware vendor to send their engineer and to take on the next steps. Will post final findings over here when the problem is solved. -- Arun Khan