On Thursday 25 June 2015 01:31 PM, Dongjun wrote:
As following topology, two VMs communicate via VXLAN tunnel.
TCP pkts may be droped for exceeding the MTU of host DPDK port in br2.
Now I can change the VMs' MTU from default to smaller to accommodate the traffics, it works well.

The way I have not find to change mtu of DPDK phy port, is there a blueprint for supporting this by ovs, like "ovs-appctl netdev-dpdk/set-xxx" or another way?

        Host1                  |                     Host2
                    (l-ip)-   L3    -(r-ip)
-----   -----        -----     |     -----       -----  ----- -----
|VM1| --|br1|Vxlan --|br2|DPDK---DPDK|br2|--Vxlan|br2|--|br1|--|VM2|
-----   -----        -----     |     -----       -----  ----- -----

There are two br2 bridge on Host2. It is intentional ?

Btw, I am trying on same page but could not simplify the vm-vxlan-dpdk working within "single" bridge case, may be that I am yet to find right flow rules to handle vhost-user, vxlan and dpdk ports. I hope you are using patch port between two bridges. Would you really need it ?


Regards,
Gowri Shankar
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