Openvswitch Trunk does not work for me

[engelant]

Hi there,

today, or better tonight, i decided to reconfigure my network using openvswitch. For testing i attached my two server interfaces to two switch ports.
The switch in use is a managed switch by TP-Link.

eth0 is connected to a port which runs in access mode
(untagged VLAN ID 10, primary VLAN ID 10)

eth1 is connected to a port which runs in trunk mode
(tagged VLAN IDs 1, 10, 101, primary VLAN ID 10)

with a wiped network configuration i tried the following:

ovs-vsctl add-br br0
ovs-vsctl add-port br0 eth0 vlan_mode=access tag=10
ovs-vsctl add-port br0 eth1
ovs-vsctl add-port br0 vlan10 tag=10 -- set interface vlan10 type=internal
ifconfig vlan10 10.0.14.17 netmask 255.255.255.0
ifconfig eth0 up
ping 10.0.14.1 #Works
ifconfig eth0 down
ifconfig eth1 up
ping 10.0.14.1 #Does not work

I am using Proxmox VE 3.2 with kernel 2.6.32-29-pve.
Also it might be worth a note, that both my interfaces use the intel e1000 driver.

Thanks in advance

 

[sacculus]

HiI think you shouldn't use br0 for OVS - I suspect that PVE creates it automatiacaly as a linux bridge. Try with br1.

 

[engelant]

Hi,
for my testing i wiped /etc/network/interfaces, leaving only eth0, eth1 and lo. ifconfig -a doesn't show br0. Do you think, this still could be the issue?

 

[Mr.Holmes]

Hello engelant,

I cannot see any restriction for bridge names - br0 should work. The whole configuration seems to be ok. Strange that "ifconfig -a" does not show br0. Check if ovs service is running by

/etc/init.d/openvswitch-switch status

the response should look like this

ovsdb-server is running with pid 1179
ovs-vswitchd is running with pid 1188

check also by

ovs-vsctl show

whether the configuration is (still) correct.

If so verfiy with tcpdump what happens on the interfaces "vlan10", "br0" and "eth1" - if eth1 sends an ARP request but does not get any answer the problem is outside of the server.

Kind regards

Mr.Holmes

 

[engelant]

Hi again,
so first of all, my comment about ifconfig -a for br0 only appies after boot, as soon as I create the bridge br0 is created as supposed.
Just wanted to make clear, that for testing after right after boot i had no other interfaces but eth0, eth1 and lo.

Nobody could spot my error and help me, because as it turns out, the commands I wrote are just fine. Just fired up an other server with differen NICs and it works.

Key seems to be e1000 and this http://openvswitch.org/pipermail/discuss/2012-September/008122.html .

I suppose this won't get fixed for 2.6.32 . It might work with the newer 3.x kernel.
Update: it works with 3.10 Kernel.