Xen DoS'd my network after setting up bridging

abefroman · 08-12-2008, 07:38 AM

Xen DoS'd my network after setting up bridging

All i did was bridge the xenbr0 to eth0 and then the whole network went down after being flooded with arp requests.

The command I used was:
brctl addif xenbr0 eth0

Does anyone know why that happened?

What is the correct way to setup a bridge?

HellSpawn · 08-12-2008, 02:44 PM

I think Xen provides scripts to create the bridges itself.

abefroman · 08-12-2008, 03:15 PM

Quote:

Originally Posted by HellSpawn

I think Xen provides scripts to create the bridges itself.

Yes, brctl, is that script.

HellSpawn · 08-12-2008, 03:43 PM

No, no....

brctl is not a script, brctl is the linux command for creating bridges (http://www.linuxcommand.org/man_pages/brctl8.html)

Xen have a bunch of scripts under /etc/xen/scripts that provide bridging or NATting, and you have to change one of those sxp files under /etc/xen so they work as you want.

http://wiki.xensource.com/xenwiki/XenNetworking

Cheers,

abefroman · 08-12-2008, 04:20 PM

Quote:

Originally Posted by HellSpawn

No, no....

brctl is not a script, brctl is the linux command for creating bridges (http://www.linuxcommand.org/man_pages/brctl8.html)

Xen have a bunch of scripts under /etc/xen/scripts that provide bridging or NATting, and you have to change one of those sxp files under /etc/xen so they work as you want.

http://wiki.xensource.com/xenwiki/XenNetworking

Cheers,

Thanks, I think your right, you use brctl, to create the bridge and then network-bridge in /etc/xen/scripts to bridge it