Team, Thanks for the response. It looks like when we are using *Xen*, eth0 is become peth0. When I tried *ethtool -s peth0 speed 100 duplex full autoneg off* it works fine. I tested throughput and it is optimum. Regards, Sikkandar On Mon, Jan 10, 2011 at 4:57 AM, R Lists07 <lists07 at abbacomm.net> wrote: > Sikkandar, > > typically, we do this & put this text > > ETHTOOL_OPTS="speed 100 duplex full autoneg off" > > in this file > > /etc/sysconfig/network-scripts/ifcfg-eth0 > > and any others files there as necessary > > reboot unit or whatever is best for your admin situation... > > you may have other issues that we cannot discern from your email > > - rh > > _______________________________________________ > CentOS mailing list > CentOS at centos.org > http://lists.centos.org/mailman/listinfo/centos > > -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.centos.org/pipermail/centos/attachments/20110110/eca3f6d8/attachment-0003.html>