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[69.123.99.190]) by smtp.gmail.com with ESMTPSA id n85sm1766344qkn.31.2020.05.21.07.32.07 for (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Thu, 21 May 2020 07:32:07 -0700 (PDT) From: Mark Saad Mime-Version: 1.0 (1.0) Date: Thu, 21 May 2020 10:32:04 -0400 Subject: =?utf-8?Q?Vlans_I=E2=80=99ve_LACP_debug_help?= Message-Id: To: "freebsd-hackers@freebsd.org" X-Mailer: iPhone Mail (17E262) X-Rspamd-Queue-Id: 49SXBd5pmpz3ZdV X-Spamd-Bar: / Authentication-Results: mx1.freebsd.org; dkim=pass header.d=longcount-org.20150623.gappssmtp.com header.s=20150623 header.b=l9QqP2W6; dmarc=none; spf=none (mx1.freebsd.org: domain of nonesuch@longcount.org has no SPF policy when checking 2607:f8b0:4864:20::832) smtp.mailfrom=nonesuch@longcount.org X-Spamd-Result: default: False [-0.25 / 15.00]; RCVD_VIA_SMTP_AUTH(0.00)[]; ARC_NA(0.00)[]; R_DKIM_ALLOW(-0.20)[longcount-org.20150623.gappssmtp.com:s=20150623]; NEURAL_HAM_MEDIUM(-0.47)[-0.467]; FROM_HAS_DN(0.00)[]; MV_CASE(0.50)[]; TO_MATCH_ENVRCPT_ALL(0.00)[]; MIME_GOOD(-0.10)[multipart/alternative,text/plain]; PREVIOUSLY_DELIVERED(0.00)[hackers@freebsd.org]; DMARC_NA(0.00)[longcount.org]; RCPT_COUNT_ONE(0.00)[1]; NEURAL_HAM_LONG(-0.15)[-0.148]; RCVD_COUNT_THREE(0.00)[3]; TO_DN_ALL(0.00)[]; DKIM_TRACE(0.00)[longcount-org.20150623.gappssmtp.com:+]; RCVD_IN_DNSWL_NONE(0.00)[2607:f8b0:4864:20::832:from]; NEURAL_SPAM_SHORT(0.16)[0.162]; R_SPF_NA(0.00)[no SPF record]; FROM_EQ_ENVFROM(0.00)[]; MIME_TRACE(0.00)[0:+,1:+,2:~]; ASN(0.00)[asn:15169, ipnet:2607:f8b0::/32, country:US]; RCVD_TLS_ALL(0.00)[]; MID_RHS_MATCH_FROM(0.00)[]; RECEIVED_SPAMHAUS_PBL(0.00)[69.123.99.190:received] Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: quoted-printable X-Content-Filtered-By: Mailman/MimeDel 2.1.33 X-BeenThere: freebsd-hackers@freebsd.org X-Mailman-Version: 2.1.33 Precedence: list List-Id: Technical Discussions relating to FreeBSD List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 21 May 2020 14:32:11 -0000 All (reposted from net mailing list ) I was looking into an issue I am seeing sporadically where I see LCAP link s= tate changes for no obvious reasons. This is on 12.1-STABLE r354698 amd64 using Solarflare nics ( 7K and 8K cards= ). There are two ports in a LACP lagg with a few ( 10 - 30 ) vlans on top of it. As what appear to be random moments the LACP linkstate f= laps between the server and the switch. It will flap for about 20 to 30 seconds and then resolve itself. I read this post from Oliver C about how net.link.ifqmaxlen can effect LACP a= nd LAGG but I dont understand how. https://www.mail-archive.com/freebsd-net@freebsd.org/msg61904.html I feel like I am missing something obvious . --- Mark Saad | nonesuch@longcount.org=