[ovs-dev] [urgent] is there anyway to enable multi-vlan for on vm upon ovs ?

[Ben Pfaff]

On Sun, Jan 22, 2017 at 05:18:48PM +0800, xiucai wrote:
> hi,
>     everyone :)
> 
> 
>     in my case, there is one vm for storage sharing, we name it SVM, and several VMs as testing client.
>     for historic reasons, i can not modify the network which uses vlan upon ovs.
> 
> 
>     the SVM is corresponding to vnet0, make it as trunk for tag-2 and tag-3;
>     the VM1 is corresponding to vnet2/tag-2 and the VM2 is corresponding to vnet4/tag-3.
>     i wanna all VMx can connect to SVM, but VMx can not communicate with each other!
> 
> 
>     ==============configurations==============
>     SVM's eth0: 192.168.1.1 static 52:54:01:CB:35:C4
>     VM1's eth0: 192.168.1.2 static 52:54:02:CB:35:C4
>     VM2's eth0: 192.168.1.3 static 52:54:03:CB:35:C4
> 
> 
>     Bridge "br1"
>         Port "vnet4"
>             tag: 3
>             Interface "vnet4"
>         Port "vnet0"
>             trunks: [2, 3]
>             Interface "vnet0"
>         Port "vnet2"
>             tag: 2
>             Interface "vnet2"
>         Port "br1"
>             Interface "br1"
>                 type: internal
>     ovs_version: "2.5.0"
>     =====================================
> 
> 
>     but it does not work :(
>     they can not ping through each other!
> 
> 
>     i use tcpdump to monitor eth0 on SVM, and ping SVM from VM1, it said "ARP Request who-has SVM-IP to tell VM1-IP".
>     and i use arp to add entry for each other, then it only said "VM1-IP > SVM-IP: ICMP echo request, id xxxx, seq x, length xx", but no "reply".
> 
> 
>     i have got no idea about this case, i do not know i have mistaken the concept of trunk on ovs or my config is wrong :(

Does your VM connected to vnet0 understand VLAN trunks?  Do you have
VLAN interfaces configured there?