Reducing the Nic transmission speed between two Servers

Linux Duke · 05-10-2012, 06:14 AM

Hi there,

I have a Redhat 6 server and a CentOS 6 server that I need them to trasmitt data between each other at 64K. Which tools can I use to reduce the transmission speed from 1000 Gig's to 64k on the two servers.

Regards
The Duke

TenTenths · 05-10-2012, 07:12 AM

You don't say what you are using to transmit the data, you'll find that many utilities (for example, rsync and scp) have options that allow you to specify the bandwidth to be used.

Linux Duke · 05-10-2012, 07:36 AM

The is an application that is running on the two servers and currently the is phisical servers that are currently live and transmiting data between 64k lines.
I'm doing a simulation of those servers in a vmware environment but vmware supports this at host level not at vm level. That is why I need to reduce the speed on the nic's at OS level.

I will highly appricate your assistence.

Thanks

jefro · 05-10-2012, 09:47 AM

ethtool only allows you to set common speeds such as 10Base. What you need to install is a bandwidth shaping app.

tc may work, look at docs. http://tldp.org/HOWTO/Traffic-Contro...html#e-shaping