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Old 02-09-2010, 11:55 AM   #1
Registered: Jun 2009
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Finding the speed of the NIC


I have a centos 5.2 that is running in the vmware ESXi host.

I like to confirm the NIC speed. I did a ifconfig -a and noticed txqueuelen:1000. Is that the nic speed?

Old 02-09-2010, 12:05 PM   #2
Registered: Oct 2008
Location: Pakistan, Islamabad
Distribution: CentOS, Fedora, Solaris
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try this command

to check link through root or admin user

/sbin/ethtool eth0
Old 02-09-2010, 01:34 PM   #3
Registered: Dec 2008
Location: Bellevue,WA
Distribution: RHEL 5 , Fedora ,Sabayon,Solaris,Vmware,AWS
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If centOS is guest in VMware ESX , it would be ideal to probe the ethernet interface from the host OS rather that from guest OS to know the speed. Coz the ethernet interface available to centos would be a virtual adapter provided by VMware.Am not sure whether tools like ethtool is available in VMware. Folks who are exposed to VMware plz comment..
Old 02-09-2010, 02:35 PM   #4
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ethtool will still report correctly if the box is a VM


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