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Re: [Xen-users] VLANs and bridging
- To: "Andrew McConnell" <armcconnell@xxxxxxxxx>
- From: "Abel Martín" <abel.martin.ruiz@xxxxxxxxx>
- Date: Thu, 16 Nov 2006 12:04:27 +0100
- Cc: Xen-users@xxxxxxxxxxxxxxxxxxx
- Delivery-date: Thu, 16 Nov 2006 03:04:46 -0800
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On 9/6/06, Axxxxx Mcxxxxxx wrote:
Hello,
I'm having some trouble getting VLAN bridging to work on my Xen
installation. Here's what I've done:
On Dom0, I set up a new bridge and add eth1 to it. I suppose I'll
eventually use /etc/xen/scripts/network-bridge to do this for me, but
I see no reason why this shouldn't work.
dom0# brctl addbr vlans
dom0# brctl stp vlans off
dom0# brctl setfd vlans 0
dom0# brctl addif vlans eth1
dom0# brctl show
bridge name bridge id STP enabled interfaces
vlans 8000.00a0d1e10f67 no eth1
xenbr0 8000.feffffffffff no peth0
vif0.0
eth1 is connected to a switch running 802.1q. I know my VLANs work
normally in Dom0 based on the following output where I configure a new
VLAN on eth1, add an IP and ping something on the VLAN.
dom0# ifconfig eth1.48
eth1.48: error fetching interface information: Device not found
dom0# vconfig add eth1 48
Added VLAN with VID == 48 to IF -:eth1:-
dom0# ifconfig eth1.48 up 198.18.0.53/24
dom0# ping 198.18.0.2
PING 198.18.0.2 (198.18.0.2) 56(84) bytes of data.
64 bytes from 198.18.0.2: icmp_seq=0 ttl=255 time=10.3 ms
--- 198.18.0.2 ping statistics ---
1 packets transmitted, 1 received, 0% packet loss, time 0ms
rtt min/avg/max/mdev = 10.332/10.332/10.332/0.000 ms, pipe 2
Now I want to have a similar config on my DomU's, so I start one up
with the following vif configuration:
vif = [ 'bridge=vlans' ]
After it boots, I insert the 8021q module and create a VLAN interface.
domU# insmod 8021q.ko
8021q: no version for "struct_module" found: kernel tainted.
domU# vconfig add eth0 48
Added VLAN with VID == 48 to IF -:eth0:-
domU# ifconfig eth0.48 up 198.18.0.53/24
domU# ping 198.18.0.2
PING 198.18.0.2 (198.18.0.2) 56(84) bytes of data.
--- 198.18.0.2 ping statistics ---
2 packets transmitted, 0 received, 100% packet loss, time 999ms
As you can see, it didn't work. Back on Dom0, I see the vif for my
DomU has been added to my bridge as I would expect. What am I
missing? Why aren't tagged frames from my DomU being bridged to eth1
on Dom0?
dom0# brctl show
bridge name bridge id STP enabled interfaces
vlans 8000.00a0d1e10f67 no eth1
vif7.0
xenbr0 8000.feffffffffff no peth0
vif0.0
Help appreciated.
-Andrew
Hi,
This article might help you.
http://felipe-alfaro.org/blog/category/xen/
Regards.
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