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[Xen-users] Network problem

  • To: xen-users@xxxxxxxxxxxxxxxxxxx
  • From: "Gino LV. Ledesma" <gledesma@xxxxxxxxx>
  • Date: Thu, 21 Apr 2005 13:29:05 -0700
  • Delivery-date: Thu, 21 Apr 2005 20:28:53 +0000
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  • List-id: Xen user discussion <xen-users.lists.xensource.com>

Hi, everyone

I just started with Xen yesterday and have been doing a search through
Google and the mailing lists. So far, I can't seem to get my
networking right (between dom0 and dom1) even though I think I've
followed the right steps.

Dom0: /
Dom1: /

Here's what I have on the host OS:
eth0      Link encap:Ethernet  HWaddr 00:0C:29:BA:AC:E0
          inet addr:  Bcast:  Mask:
vif1.0    Link encap:Ethernet  HWaddr FE:FF:FF:FF:FF:FF
xen-br0   Link encap:Ethernet  HWaddr 00:0C:29:BA:AC:E0
          inet addr:  Bcast:  Mask:

Kernel IP routing table
Destination     Gateway         Genmask         Flags Metric Ref    Use Iface       U     0      0     
  0 xen-br0         UG    0      0     
  0 xen-br0

And on the guest OS:
eth0      Link encap:Ethernet  HWaddr DE:AD:29:BA:AC:EA
          inet addr:  Bcast:  Mask:

In the dom1 config, I've configured vif as follows:
vif = [ 'mac=DE:AD:29:BA:AC:EA, bridge=xen-br0' ]

bridge utils seems to have it correct:

bridge name     bridge id               STP enabled     interfaces
xen-br0         8000.000c29baace0       no              eth0
I can't even get the guest OS and the host OS to talk to each other.
I've also tried enabling ip_forward but still no dice. I was mucking
around before and managed to get them to talk to each other once, but
from there I couldn't make the guest OS talk to the gateway of the
host OS.

Not sure what I've missed. I'm using xen-2.0.5 on Centos 4 (both host
and guest OSs).

Any advise appreciated.

- gino

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