Some general questions: Will the datapath actively leave the network if it is burdened? Or only link_timeouts at discovery module will make them leave.
My program has following messages: 00016|openflow|WARN:stream: send error: Broken pipe 00017|routingMR|ERR:Add flow entry to dp:f7cae4000064 failed with 32:Broken pipe. 00018|openflow|WARN:stream: receive error: Bad file descriptor 00019|nox|WARN:stream: disconnected (Bad file descriptor) Datapath leave, f7:ca:e4:00:00:64 What does "Broken pipe" usually imply? I cant find where it is from. On Tue, Dec 22, 2009 at 10:41 AM, Guanyao Huang <[email protected]> wrote: > But I am now in UCdavis. I will start my intern next quarter.... > > On Tue, Dec 22, 2009 at 5:18 AM, Rob Sherwood <[email protected]> > wrote: >> Hi Guanyao, >> >> I'm going to be in the lab today ... let's try to find some time to >> talk about this. >> >> - Rob >> . >> >> >> >> On Tue, Dec 22, 2009 at 5:17 AM, Rob Sherwood <[email protected]> >> wrote: >>> On Mon, Dec 21, 2009 at 12:47 PM, Martin Casado <[email protected]> wrote: >>>> I agree that if the problem is timeout due to loss from overload, then the >>>> only solution is prioritization. >>> >>> In general yes, but the current discovery algorithm is fairly brittle. >>> With a large number of ports (48) on a hardware switch, even a small >>> amount of packet loss it can falsely report down links. Part of the >>> goal of the rewrite is to address this issue. >>> >>>> Question for the slicing folks, does slicing extend to the control channel >>>> (packets set to the controller?) >>> >>> In addition to what Yiannis said (short story == "not yet"), Jean from >>> HP developed a "rate limiter" openflow action as a vendor extension >>> that can affect control and data traffic, so that could be used here. >>> I think this is a useful primitive and something I'm hoping will >>> making it into a future release of openflow (1.1?). >>> >>> - Rob >>> . >>> >> > _______________________________________________ nox-dev mailing list [email protected] http://noxrepo.org/mailman/listinfo/nox-dev_noxrepo.org
