bonding driver

Michael_E_Brown at Dell.com Michael_E_Brown at Dell.com
Mon Feb 5 09:16:52 CST 2007


It appears you are trying to set up a high availability solution, as evidenced by your comment about multiple switches. Without additional switch configuration, and without connecting all the links to the same switch, your bandwitch will be limited as you described.

From: http://linux-net.osdl.org/index.php/Bonding
==================
High Availability in a Multiple Switch Topology

With multiple switches, the configuration of bonding and the network changes dramatically. In multiple switch topologies, there is a trade off between network availability and usable bandwidth. 
==================
--
Michael


-----Original Message-----
From: linux-poweredge-bounces at dell.com on behalf of David Kostal
Sent: Mon 2/5/2007 2:54 AM
To: Hansjörg Maurer
Cc: linux-poweredge-Lists
Subject: Re: bonding driver
 
Hi,
I wanted to avoid modes 0,2,3 and 4, because I'll have to run this on
2-switch configuration later.

And additional info, which I forgot:
RHEL 4/x86_64, kernel-smp-2.6.9-42.0.3.EL

d.

On 2/5/07, Hansjörg Maurer <Hansjoerg.Maurer at dlr.de> wrote:
> Hi
>
> with
> options bond0 mode=4
> (LACP)
> we are able to sent 2GBit/s out through one bonding interface (to two hosts)
> This setting requires konfiguring LACP on the switch.
>
> http://linux-net.osdl.org/index.php/Bonding
>
> Greetings
>
> hansjörg
>
>
>
> David Kostal wrote:
> > Hi all,
> >
> > I have Dell PE2850 (2xcpu,8GB ram) with 4x gigabit cards (e1000) attached to
> > single Cisco 4506. I try to create bonding interfaces with 2 slaves. I try with
> > balance-alb, but similar behaviour is also with balance-tlb and balance-rr. i do
> > not have any special switch settings, there is no router in the setup involved.
> >
> > I am able to receive 2x 1Gbps streams on bond0 (balance-alb) from two
> > other hosts.
> > I am able to send 1Gbps stream to one other host via bond0.
> > I am able to send 2x 1Gbps streams to host1 via bond0 and host3 via bond1.
> > I am only able to send 2x 0.5Gbps streams to host1 and host2 via bond0 (both
> > slaves are used, each having traffic to single host, but only 0.5Gbps).
> >
> > Is there any reason why the outgoing traffic via bond0 doesn't go over 1Gbps?
> > The host utilization is well under its limits.
> >
> > Thanks a lot,
> >
> > david.kostal at gmail.com
> > ----+
> >
> > _______________________________________________
> > Linux-PowerEdge mailing list
> > Linux-PowerEdge at dell.com
> > http://lists.us.dell.com/mailman/listinfo/linux-poweredge
> > Please read the FAQ at http://lists.us.dell.com/faq
>
> --
> _________________________________________________________________
>
> Dr.  Hansjoerg Maurer           | LAN- & System-Manager
>                                 |
> Deutsches Zentrum               | DLR Oberpfaffenhofen
>   f. Luft- und Raumfahrt e.V.   |
> Institut f. Robotik             |
> Postfach 1116                   | Muenchner Strasse 20
> 82230 Wessling                  | 82234 Wessling
> Germany                         |
>                                 |
> Tel: 08153/28-2431              | E-mail: Hansjoerg.Maurer at dlr.de
> Fax: 08153/28-1134              | WWW: http://www.robotic.dlr.de/
> __________________________________________________________________
>
>
> There are 10 types of people in this world,
> those who understand binary and those who don't.
>


-- 
david.kostal at gmail.com
----+

_______________________________________________
Linux-PowerEdge mailing list
Linux-PowerEdge at dell.com
http://lists.us.dell.com/mailman/listinfo/linux-poweredge
Please read the FAQ at http://lists.us.dell.com/faq



More information about the Linux-PowerEdge mailing list