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xen-users
Re: [Xen-users] domU network has sleeping sickness
Joshua West wrote:
The symptoms you describe sound similar to whats found when there's a
MAC address conflict. Make sure that the MAC addresses of your virtual
machines are completely unique and not used anywhere else in your network.
Marc Teichgraeber wrote:
Hi all,
I have a strange network problem with some domU's on three XEN-Hosts.
They are loosing their network connectivity. I do bridged networking.
* It happens randomly and could happen right after bootup of the domU
or anytime later.
* The domU is not reachable from another host on the LAN.
* The domU is always reachable from the dom0 (ssh, ping).
* I can 'repair' the connection when attaching to the console and
ping out from the domU. First nothings happens, then the machine gets
back their network. (And thats also my momentary workaround, pinging all
the time from the console)
* Pinging from another host at the same time helps too.
* It could be that I can ping continously from one host and another
hosts gets only every 10th packet or so back.
* The interfaces could come back from their sleep by itself.
* When the networks has fallen asleep, ssh on the domU from another
host hangs, it does not come back with "no route to host" or something.
I'm suspicious about the network controllers, they are the same on all
hosts: "Intel Corporation 80003ES2LAN Gigabit Ethernet Controller
(Copper)"(lspci) some kind of "Intel® PRO/1000 EB Network Connection
with I/O Acceleration"(Intel website). I've tried the latest e1000
driver from Intel but it does'nt helped.
I've checked all MAC Adresses, they are unique, also the IP Adresses.
< -- snip -->
Joshua, what will happen if the network aliases (eth0:0, eth0:1, eth0:2,
etc) all have same MAC address?
and how do I know what MAC address to give to the dom_U's?
--
Kind Regards
Rudi Ahlers
CEO, SoftDux
Web: http://www.SoftDux.com
Check out my technical blog, http://blog.softdux.com for Linux or other
technical stuff, or visit http://www.WebHostingTalk.co.za for Web Hosting stugg
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