Hi, What is the motivation for hop-by-hop routing? Does seems novel in some aspects.
Regards KK On 24 February 2010 13:52, Martin Casado <[email protected]> wrote: > From Natasha: > > "I'm wondering if maybe the server is showing up on hpsw3, and so the packet > is first getting routed there, and then re-routed again when it reaches > hpsw1. This is probably a result of all the authenticator code commented out > that was making it depend on routing. It's in a couple places (wherever the > word "routing" is used)." > > This is likely the culprit. Currently Nox 0.6 is doing hop-by-hop routing > rather then setting up the full path. Can you search for routing_mode in > authenticator.hh, authenticator_modify.cc and authenticator_util.cc, > uncomment the code and see if this fixes the problem? > >> I notice that the routing module is behaving differently with NOX0.6 >> causing each switch en route to generate independent packet_ins, while >> NOX0.4 generates only 1 packet_in. This behavior incurs higher flow >> setup time. >> >> I have a topology of client <-> hpsw3 <-> hpsw1 <-> server . I >> performed a wget operation from client to server. Following is the >> control traffic sent/received by the controller (Timestamp was what my >> tcpdump captured): >> >> 1266984715.446715 PACKET_IN hpsw3 >> 1266984715.446895 FLOW_MOD hpsw3 >> 1266984715.446936 PACKET_OUT hpsw3 >> >> 1266984715.452756 PACKET_IN hpsw1 >> 1266984715.452913 FLOW_MOD hpsw1 >> 1266984715.452937 PACKET_OUT hpsw1 >> >> Ideally, I would've expected to see the controller to push out the >> second FLOW_MOD soon enough (and not 6 ms after the PACKET_OUT). >> >> When I use NOX0.4, the action sequence is: >> 1266987591.116579 PACKET_IN hpsw3 >> 1266987591.116725 FLOW_MOD hpsw3 >> 1266987591.116755 FLOW_MOD hpsw1 >> 1266987591.116787 PACKET_OUT hpsw3 >> >> Any idea if there is a code change? >> >> Thanks >> Srini. >> >> _______________________________________________ >> nox-dev mailing list >> [email protected] >> http://noxrepo.org/mailman/listinfo/nox-dev_noxrepo.org >> > > > _______________________________________________ > nox-dev mailing list > [email protected] > http://noxrepo.org/mailman/listinfo/nox-dev_noxrepo.org > _______________________________________________ nox-dev mailing list [email protected] http://noxrepo.org/mailman/listinfo/nox-dev_noxrepo.org
