Hi KK, I didn't quite understand how a NAT box is supposed to operate (never made one before) but I managed to get it working using a logical IP just as you described below. I might add code for the situation in which the box gets its IP via DHCP but I think it's fine for now. Thanks, Basu
On Mon, Sep 12, 2011 at 4:09 PM, kk yap <yap...@stanford.edu> wrote: > Hi Shrutarshi, > > I am not sure why you would need to get the IP address on the switch > so as to write a NAT application. The IP address assigned to the > switch/NAT box can be logical (i.e., the controller knows about it and > not the switch). The rewriting of the IP addresses, transport ports, > etc. are be done by the flow rules anyway. > > PS>> If your NAT box is getting its IP address via DHCP, then let me > know because you can "cheat" a little to get the address in the > controller. > > Hope this helps. > > Regards > KK > > On 8 September 2011 07:37, Shrutarshi Basu <ba...@cs.cornell.edu> wrote: > > > > > > > > On Thu, Sep 8, 2011 at 10:31 AM, Nicholas Bastin <nbas...@stanford.edu> > > wrote: > >> > >> On Thu, Sep 8, 2011 at 09:56, Aaron Rosen <aro...@clemson.edu> wrote: > >>> > >>> I'm not sure how you would go about obtaining the switches ip though > >>> nox. Though it think it should be possible to get when the switches > >>> join. Any reason you would need to do that? > >> > > > > I'm trying to write a network translation application where a switch acts > as > > a NAT box. Looking through core.py I can see that the datapath_join > handler > > is called with an "attrs" dictionary (which I assume contains switch > > information) but the code comments don't say what the contents of attrs > are. > > > >> The dp_desc of the switch *may* contain the IP address (no guarantees in > >> the spec). > > > > Is there some reliable way to get the IP of the switch? Even if it has to > be > > a separate query? > > Thanks, > > Basu > > > > > > -- > > -- > > Shrutarshi Basu > > Basus.me > > The ByteBaker -- because Computer Science is not about computers > > > > _______________________________________________ > > nox-dev mailing list > > nox-dev@noxrepo.org > > http://noxrepo.org/mailman/listinfo/nox-dev > > > > > -- -- Shrutarshi Basu Basus.me The ByteBaker <http://bytebaker.com> -- because Computer Science is not about computers
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