to answer my own question, i did figure it out. although several google
hits suggested that it was necessary to run vconfig and set up special
bridges in the dom0, the way i got it working was to leave the dom0 totally
alone and simply run vconfig in the domU, then assign an ip to the vlan
interface.
the other gotcha is that you *must* change the domU vlan interface mtu to
1496. otherwise small packets like pings will work, large packets will hang
the connection.
jason
---------- Forwarded message ----------
From: Jason Tower <jtower@gmail.com>
Date: Aug 13, 2006 12:21 PM
Subject: vlan in a domU
To: fedora-xen@redhat.com
is it possible to do 802.1q vlan tagging in a domU? i have it working fine
in the dom0:
# vconfig add eth0 560 (creates eth0.560 interface)
# ifconfig eth0.560 10.10.10.140/24 (a subnet on vlan 560)
# ping 10.10.10.100 (success)
but have been unsuccessful assigning 10.10.10.141 to a domU and getting it
to communicate with vlan 560. i''ve tried a wide variety of
combinations of
bridges, vconfigs, and xen domU vif settings, so far nothing has worked. is
it even possible to do what i''m trying to do? or am i simply missing
the
secret sauce?
jason