Re: [Xen-users] Networking problem DHCP

[Simon Hobson <linux@xxxxxxxxxxxxxxxx>]

Luciano Barreto wrote:
> Hi dudes, I'm having a problem with dhcp network. I'm using OpenSuse 
> 11.4 with Xen 4.0, default configuration. When I use my personal 
> router (wireless router) I can start my 3 vms getting ip address and 
> the comunication is ok. But now I'm trying to use it on my 
> academical network (dhcp server fixed by MAC). The problem is, just 
> the first 2 vms got ip address and comunicate with other computer on 
> the network or to the internet, the third started vm don't get ip or 
> comunicate even if I put it manualy. I asked to sysadmin verify and 
> he said that there are no problem with firewall.
> Example, if I start vm1, vm2 and finally vm3, vm1 and vm2 get ip and 
> the vm3 not. If I change, start vm3, vm2 and vm1, the vm1 don't get 
> ip or comunicate.
I would suggest you fire up wireshark in Dom0 and monitor for DHCP 
traffic while you start the guests.
My best guess is that your academic network might be applying 
per-port limits on IP addresses and you are only allowed 3 at one 
time - and are using them all (1 for Dom0, two for DomUs). It might 
be worth asking the admins if they apply any such limits.
--
Simon Hobson

Visit http://www.magpiesnestpublishing.co.uk/ for books by acclaimed
author Gladys Hobson. Novels - poetry - short stories - ideal as
Christmas stocking fillers. Some available as e-books.

_______________________________________________
Xen-users mailing list
Xen-users@xxxxxxxxxxxxxxxxxxx
http://lists.xensource.com/xen-users