Can someone set me or Kyriakos or Murphy up with a HP to test this? It is not very easy to debug without the ability to replicate the problem.
Regards KK On 7 September 2010 03:41, Ali Al-Shabibi <ali.al-shab...@cern.ch> wrote: > >>> 1. Creates a lldp packet with the 6 least significant bytes of the dpid >>> as a >>> tlv (see line 65 and 66 of discovery.py). >>> 2. The received lldp packet's tlv field is then used to compute a chassis >>> id >>> (line 276), this chassis id is only 6 bytes long >> >> You are right. The problem is that you are unable to associate >> multiple Openflow instances on the same HP switch with the same >> controller because the TLV contains only the least significant 48 >> bits. I thought this was solved with NOX-destiny branch which has >> support for 64 bit dpid. I'll let the NOX team put in the patch. > > I actually believe it doesn't work even if the connections are on the > distinct HP switches. Because the keys in self.dps are 8 bytes long and the > chassisid is 6 bytes long (and ignores the first 2 bytes of the dpid). So > unless the first 2 bytes of the dpid is all zero, this will never work. > Moreover, the first 2 bytes cannot be zero as they represent the openflow > instance vlan id which cannot be 0 (at least on HP switches). Please correct > me, if I am wrong. > >>> Also, I noticed that the switchstats.py in the switchstats component has >>> the >>> following call: >>> self.ctxt.send_port_stats_request(dp) >>> Shouldn't this call be: >>> self.ctxt.send_port_stats_request(dp, openflow.OFPP_NONE) >> >> I believe the default value of OFPP_NONE for the second argument is >> set elsewhere. > > When I run the switchstats module, I get this error: > 12:30:48 a...@pcepatr39[src]$ ./nox_core -i ptcp:2525 switchstats > NOX 0.8.0~full~beta (nox_core), compiled Sep 2 2010 16:32:28 > Compiled with OpenFlow 0x01 > 00001|reactor|ERR:Unhandled Error > Traceback (most recent call last): > --- <exception caught here> --- > File "./nox/coreapps/pyrt/pyoxidereactor.py", line 86, in __call__ > self.func(*self.args, **self.kw); > File "./nox/netapps/switchstats/switchstats.py", line 123, in <lambda> > lambda : self.port_timer(dp)) > File "./nox/netapps/switchstats/switchstats.py", line 88, in port_timer > self.ctxt.send_port_stats_request(dp) > File "./nox/coreapps/pyrt/pycomponent.py", line 476, in > send_port_stats_request > def send_port_stats_request(*args): return > _pycomponent.PyContext_send_port_stats_request(*args) > exceptions.TypeError: PyContext_send_port_stats_request() takes exactly 3 > arguments (2 given) > > It is fixed by adding the OFPP_NONE > > Thanks! > > -- > Ali Al-Shabibi > Doctoral Student > PH-ATD > CERN - European Organization for Nuclear Research > Office: 513 R-018 > ali.al-shab...@cern.ch > Tel : +41 22 767 86 46 > Mob : +41 78 609 04 84 > > > _______________________________________________ > nox-dev mailing list > nox-dev@noxrepo.org > http://noxrepo.org/mailman/listinfo/nox-dev_noxrepo.org > _______________________________________________ nox-dev mailing list nox-dev@noxrepo.org http://noxrepo.org/mailman/listinfo/nox-dev_noxrepo.org
