Hi all Has anyone use iperf for testing performance trough Nexus 5000 and 2000. I'm trying to find a problem with EMC nfs-share on 10Gb interace towards 1Gb interface. If I user iperf as a client on the 10G link and as a server on the 1G link, and the only way I can max the link out, is with a window size of 64K. I normally don't have any problems using iperf, and if I do the same test on a storeNforward environment. I just want to be sure that the result I see is correct. And if this is correct, why exact 64K ??. I have tried to tune the buffers on the fex, but without any luck.
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