Date: Tue, 11 Feb 2020 10:36:43 -0500 From: Mark Saad <nonesuch@longcount.org> To: Eugene Grosbein <eugen@grosbein.net> Cc: FreeBSD Hackers <freebsd-hackers@freebsd.org> Subject: Re: LACP / Slow-protocol issue Message-ID: <CAMXt9NY3sbTWo-CV=gGf=UUnABJET%2B5TfOhSe=C_euGEo8MWvQ@mail.gmail.com> In-Reply-To: <bb566a20-7fbb-03f3-cb6a-83371e39486d@grosbein.net> References: <CAMXt9NYVyk7xpevMJE65eG8D2JPg2aY3X2Sh4r2WusqcQMzkGA@mail.gmail.com> <bb566a20-7fbb-03f3-cb6a-83371e39486d@grosbein.net>
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Eugene On the upstream switches; I have span of the interfaces going into a packet capture device . I can pull pcaps going back a few weeks, however what I see for ethertype 0x8809 is not all that interesting; and I am not exactly sure of the intended interaction of switch to lagg with lacp. Also, I seriously doubt this is related to iflib. The only reason I say this is, some of my devices with the same-ish* setup do not exhibit the issue. *some of the switches are running on newer vendor hardware. On Tue, Feb 11, 2020 at 1:43 AM Eugene Grosbein <eugen@grosbein.net> wrote: > > 11.02.2020 2:30, Mark Saad wrote: > > > Hello FreeBSD Hackers > > I was wondering if there is anyone on-list who has hands on > > knowledge of the "slow-protocols" and in particular lacp . > > > > I am running a fairly new 12.1-STABLE amd64 r354698 , for reasons I > > can't yet identify a two port lacp lagg has a short <1sec blip where > > switches and lagg members believe each side has stopped distributing > > lacp slow-protocol frames. I am not super knowledgeable about how to > > diagnose the slow-protocol frames to see who is at fault . Any insight > > here would help. > > Just use: tcpdump -s0 -np -i parent0 not ip > Replace "parent0" with name of your real (physical) interface name (one of), like igb0. > > You may be facing one of iflib's problems, so try booting FreeBSD 11.3-RELEASE (pre-iflib) > to compare behaviour and see if it runs better or not. > > -- mark saad | nonesuch@longcount.org
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