Yes, you are correct and I may do that on some of the internal servers.
The downside is, on some of the public servers, they could see each
other's network traffic if using the same bridge. I want to avoid that
if possible.
Thanks for the reply,
Steve.
On Mon, 2010-04-19 at 14:54 +0200, Matej Zary wrote:
> And what about creating bond on the eth1 and eth2? You will also gain
> redundancy in network connection this way.
>
> Regards
>
> Matej
>
> -----Original Message-----
> From: xen-users-bounces@xxxxxxxxxxxxxxxxxxx
> [mailto:xen-users-bounces@xxxxxxxxxxxxxxxxxxx] On Behalf Of Steve Arntzen
> Sent: Monday, April 19, 2010 2:33 PM
> To: xen-users@xxxxxxxxxxxxxxxxxxx
> Subject: [Xen-users] Multiple bridges on same subnet?
>
> I am running multiple DomUs on the same subnet and wanted to spread the
> load over multiple network interfaces. In addition, the system has
> other DomUs with interfaces (bridges) on other subnets. The NICs and
> bridges do not have any IPs on the Dom0, only in the DomUs.
>
> If I run two DomUs with separate bridges (server1 - br1/eth1 and server2
> - br2/eth2) on the same subnet, everything runs fine for a while (up to
> 24 hours) and suddenly, all bridge traffic stops. Even bridge traffic
> on other DomUs on separate networks stops. Nothing is logged by the
> Dom0 or any of the DomUs. All interface configurations and routing
> tables look fine. Shutting down the DomUs, restarting networking and
> restarting the DomUs clears the problem.
>
> The Dom0 which has its own interface (eth0) always works.
>
> Should I not be running multiple bridges on the same subnet or am I
> missing some network configuration?
>
> If I share one bridge with multiple DomUs, all works well even under
> heavy load. The network however, is a bottleneck.
>
> Platform:
> Sun x4140, dual hex core AMD64
> Debian 5.0.4 (kernel 2.6.26-2-xen-amd64)
> Xen 3.2-1-amd64
>
> # The first bridge
> auto br1
> iface br1 inet manual
> bridge_ports eth1
> bridge_stp off
> bridge_maxwait 5
>
> # The second bridge
> auto br2
> iface br2 inet manual
> bridge_ports eth2
> bridge_stp off
> bridge_maxwait 5
>
> First DomU:
> vif = [ 'bridge=br1' ]
>
> Second DomU:
> vif = [ 'bridge=br2' ]
>
>
> Thanks in advance,
>
> Steve.
>
>
>
>
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