[ovs-discuss] VM with VLAN can't connect to external network

[斯佩峰]

在 2013-3-22，上午8:13，"Ben Pfaff" <blp at nicira.com> 写道：

> On Fri, Mar 22, 2013 at 08:09:51AM +0800, ????????? wrote:
>> For you suggestion, did you mean to connect the eth0 to a trunk port 
>> of physical switch ?
> 
> Presumably you already did that, otherwise I don't know how you expected
> to make connectivity work from the VM to outside the hypervisor.
I did the experiment in company network. I just connect my PC to the ethereal 
port on the wall from where it can get dhcp IP address, and I don't know the 
network setting behind the wall in fact and also have no permission to change 
it.That's why I desire to figure out a way to solve my problem at openvswitch 
side. :)

> 
>> In addition, I got below command from google but still have no chance 
>> to try it. Is it possible to solve my problem?
>> # ebtables -t broute -A BROUTING -i eth0 -p 802_1Q -j DROP
> 
> No.  ebtables controls the Linux bridge, not Open vSwitch.
> 
>> Thanks
>> Feng
>> 
>> 
>> ?? 2013-3-22??????7:15??"Ben Pfaff" <blp at nicira.com> ??????
>> 
>>> Please don't drop the list.
>>> 
>>> You could use a "native VLAN" trunk port.  I suspect it won't do what
>>> you want though.
>>> 
>>> On Fri, Mar 22, 2013 at 07:07:23AM +0800, ????????? wrote:
>>>> Thanks Ben!
>>>> 
>>>> Then, is it possible to configure the openvswitch to remove the vlan tag when the packets go to external network?
>>>> 
>>>> ?? 2013-3-22??????1:31??"Ben Pfaff" <blp at nicira.com> ??????
>>>> 
>>>>> On Thu, Mar 21, 2013 at 09:14:16PM +0800, ?????? wrote:
>>>>>> Hello all,My problem is that after configuring the VLAN in VM, it can't connect to external network.Here is my test environment:     . One physical machine installed with ubuntu 12.04, which has one network device (eth0) and is able to access internet.     . openvswitch 1.9.0.     . Four VMs (VM1, VM2, VM3, VM4).     . vnet1, vnet2, vnet3, vnet4 and eth0 are all added to bridge ovsbr.
>>>>>> Before setting vlan, all VMs and host system can connect to external network, meanwhile VMs can ping each other. But after I configuring VM1 and VM2 with VLAN 10, it failed to connect to external network, though it can ping each other. I have struggled with issue a few days and didn't find useful tips in ovs FAQ and google. Any help is appreciated !
>>>>> 
>>>>> The Internet is probably not reachable over that VLAN on your network.
>>>>> That is a question of how your exteral network is set up, not an
>>>>> aspect of Open vSwitch.