[ovs-discuss] Forwarding between Multiple interfaces Openflow

Aaron Rosen arosen at clemson.edu
Fri Mar 4 20:08:23 UTC 2011

Hi Ben,

Sorry to bring this back up but for some reason I can't get this working
again and I was hoping someone would know why.

I have interface dp1 - and interface dp0 - (No ip address

When running tcpdump on dp1 I see packets like this:

IP > IP > ICMP echo
request, id 46093, seq 1561, length 64 (ipip-proto-4)

My routing tables are the following:
Kernel IP routing table
Destination     Gateway         Genmask         Flags Metric Ref    Use
Iface UGH   2      0        0
wlan1     *      UH    2      0        0
wlan1  *      U     0      0        0 dp1     *        U     0      0        0
wlan1     *        U     0      0        0 dp0

Because of this I would expect to the the packet on dp0 but I don't (when
running tcpdump on dp0).

Any ideas why?



On Tue, Mar 1, 2011 at 1:18 AM, Ben Pfaff <blp at nicira.com> wrote:

> On Mon, Feb 28, 2011 at 10:13 PM, Aaron Rosen <arosen at clemson.edu> wrote:
> > For some reason that added route does not send packets to the dp0
> > interface. (Any idea's? I'm still looking around. I enabled
> > log_martians on everything and nothing is showing up there).
> Odd.  I don't know why.  Maybe somebody else will know why.
> --
> "I don't normally do acked-by's.  I think it's my way of avoiding
> getting blamed when it all blows up."               Andrew Morton

Aaron O. Rosen
Masters Student - Network Communication
306B Fluor Daniel
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