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Re: [Xen-users] Issue with Xen networking bridged mode

  • To: Joseph Glanville <joseph.glanville@xxxxxxxxxxxxxx>
  • From: Prakhar Srivastava <prakhar.apj@xxxxxxxxx>
  • Date: Tue, 10 May 2011 10:12:16 +0530
  • Cc: xen-users@xxxxxxxxxxxxxxxxxxx
  • Delivery-date: Mon, 09 May 2011 21:43:42 -0700
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Hi Joseph,
Yes, I am using Opennebula to manage my Xen cluster. Is there any networking issue when using Xen with opennebula? Can you please tell me a little more about ARPing .

Thanks for the response.


On Tue, May 3, 2011 at 10:39 PM, Joseph Glanville <joseph.glanville@xxxxxxxxxxxxxx> wrote:
Hi Prakhar, 

These problems are generally caused due to ARP propagation issues.
I would suggest attempting to reach the machine with ARPing from another host on the LAN.

Also by any chance are you using OpenNebula?


On 3 May 2011 16:25, Prakhar Srivastava <prakhar.apj@xxxxxxxxx> wrote:
I have two debian machines (debian squeeze) with xen 4.0 installed using debian repository packages. The VMs created on machine1 are accessible from the local network and internet is accessible within the VM. However, when I try to ping the VMs on the  machine2 from any host other than the machine itself(Dom0), i get a DESTINATION HOST NOT REACHABLE error.If I try to ping the VM from the DomO, it works fine. 

The configuration file for machine2 VM is as follows:

name = 'vm2'
memory  = '256'
vcpus  = '1'
kernel = '/home/cloud/kernel/xen/2/vmlinuz-'
ramdisk = '/home/cloud/kernel/xen/2/initrd-'
root = '/dev/xvda'
extra = 'xencons=tty'
disk = [
vif = [
    ' mac=02:00:c0:a8:91:fd,ip=,bridge=eth0',

I hope someone can advice what could be the possible issue.


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