hi,Agarwal, i just found you mail on click mailing list. i met the same problem as yours. the NIC i used is PRO/1000,and i can't get all the packets when testing with smartbits. the system always lost several packets, until the rate is reduced to about 15k pps. have you found the reason? jack zheng E-mail: zhengcb at netpower.com.cn Http://www.netpower.com.cn