how to: Teamed NICs on PowerEdge 1950 (CentOS linux)
reschke at bakerlab.org
Mon Oct 15 12:31:38 CDT 2007
Teaming, or "trunking" or "channel bonding" network interfaces under
RHEL is pretty straight forward. If you wanted to trunk eth0 and
eth1, your config files in /etc/sysconfig/network-scripts would look
And you have to configure the bonding driver to behave as you'd like
alias bond0 bonding
options bond0 mode=4
options bond0 miimon=100
The mode is important. We use mode=4 because our tests show it
providing the greatest increase in throughput (in fact, the other
modes provided little or no increase). We're using this on NFS
servers with many clients, so you might see different performance
results, particularly if your communication tends to be more one-to-
one rather than one-to-many.
With mode=4 (also known as LACP or 802.3ad), you'll have to configure
the associated switch ports to also do LACP.
Supposedly, you can bond interfaces that connect to separate
switches, but I believe you'll have to use mode=0 (balance-rr). I
haven't done this myself.
Have a look at:
You'll find lots more information there than I can provide.
University of Washington
On Oct 12, 2007, at 5:30 PM, Eugene Pik wrote:
> Is there any guide how to team 1950's onboard NICs 1950 under
> CentOS 4 or RedHat 4?
> Will it work with any network switch or different manufacturers
> require different teaming software/options?
> Can these NICs be connected to 2 different switches for high
> Eugene Pik
> Linux-PowerEdge mailing list
> Linux-PowerEdge at dell.com
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