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[Xen-users] Bridged networking not working as expected


  • To: <xen-users@xxxxxxxxxxxxxxxxxxx>
  • From: "Rustedt, Florian" <Florian.Rustedt@xxxxxxxxxxx>
  • Date: Wed, 12 Nov 2008 11:38:04 +0100
  • Delivery-date: Wed, 12 Nov 2008 02:38:44 -0800
  • List-id: Xen user discussion <xen-users.lists.xensource.com>
  • Thread-index: AclEsr5DB+/TFyzxTnCTr+9kPGRG3A==
  • Thread-topic: Bridged networking not working as expected

Hello list,

I am trying to connect 16 machines. I changed the loopback-values to
255.

If i now start all machines and try networking, about the half couldn't
connect the internet but get an IP and can ping the dom0. So i decided
to seperate them into 4 bridges, so vm 0-3 are on bridge "cluster0", 4-7
are on "cluster1" and so on...

For that, i changed my xend-config.sxp:
#(network-script network-bridge)
(network-script network-bridge bridge=cluster0 vifnum=0)
(network-script network-bridge bridge=cluster1 vifnum=1)
(network-script network-bridge bridge=cluster2 vifnum=2)
(network-script network-bridge bridge=cluster3 vifnum=3)

But this didn't work. Restart of xend did no error-messages, but neither
did install four bridges. If i add "bridge=cluster0" to a virtual
machine and start it, i get the error that the bridge is missing.

So there are two main questions for me:

1. WHY is bridged networking only working for half of the vms'?
2. What's the fault in my "bridge-multiply"-config?

Kind regards, Florian
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