[ovs-discuss] Doubts about traffic, arp and ip packets

Jesse Gross jesse at nicira.com
Mon Dec 3 18:18:38 UTC 2012


On Mon, Dec 3, 2012 at 2:49 AM, Rafael Gomes <rggg88 at hotmail.com> wrote:
> Good morning,
>
> I'm new in OpenVswitch and Openflow. For that i'm working with a network
> with 5 ovs, two hosts and using a floodlight controller to simulated
> openflow.
> But i found some problems, and i don't know why.
>
> First case is the ovs 4 each times that i start ovs-switched server,
> generated a more traffic that is usual, how you can look in annex.
> After 10s when i do the next configuration
>
> ovsdb-server --remote=punix:/usr/local/var/run/openvswitch/db.sock \
> --remote=db:Open_vSwitch,manager_options \
> --private-key=db:SSL,private_key \
> --certificate=db:SSL,certificate \
> --bootstrap-ca-cert=db:SSL,ca_cert \
> --pidfile --detach & \n ovs-vsctl --no-wait init \n ovs-vswitchd --pidfile
> --detach\n ovs-vsctl set-controller br0  tcp:193.136.93.208:6633
>
> And try make a capture with tshark, i see this (see object in anex).
>
> Second cases is when i use the floodlight in 1.0 version to static push
> flows about ip, the flows are well insert in the flow tables of ovs switch,
> but when i try ping the two hosts, in the flow tables of each ovs be appear
> more two flows that i don't pushing.  Maybe  ARP packet is not an IP packet,
> perhaps OpenVswitch does not compare your "src-ip" and "dst-ip" match fields
> with "senderProtcolAddress" and "targetProtocolAddress" in ARP payload?

That's correct, ARP is not IP.



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