[CentOS] Interface bonding?

Thu May 22 01:25:32 UTC 2008
Mag Gam <magawake at gmail.com>

Just out of curiosity.

If you wanted to bond do you have to ask your network admin to configure a
special switch setting for MAC addresses?

On Tue, Apr 15, 2008 at 6:27 PM, James Pearson <james-p at moving-picture.com>

> Timothy Selivanow wrote:
>> I've changed the switch out, unfortunately to something that I know
>> doesn't support 802.3ad, but I'm still unable to get aggregate link
>> bandwidth using mode 0, 2, and 6.  I'm using scp to test the bandwidth,
>> one machine with one interface, one with two bonded, and one with three
>> bonded.  No matter the combination of who is sending/receiving the
>> files, no increase in throughput.
>> Would using a x-over cable on two machines, using two interfaces each,
>> with 802.3ad (or other mode...) on both hosts work?  My inclination is
>> that the aggregating protocol needs a shared bus to negotiate, and
>> putting each channel on it's own bus (x-over cable) would defeat that...
> AFAIK, bonding can not give increased bandwidth between two hosts - the
> maximum you can ever get is the bandwidth of one of the links i.e. if you
> have a server with say 4 bonded interfaces, any one client can only get a
> maximum bandwidth of one of the interfaces on the server.
> I've used 2 bonded (mode 6) Gigabit interfaces on NFS servers and can get
> 200+Mbyte/s read speeds using multiple clients
> James Pearson
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