Date: Wed, 10 Dec 2014 17:21:10 -0800 From: "David P. Discher" <dpd@dpdtech.com> To: Ryan Stone <rysto32@gmail.com> Cc: FreeBSD Net <freebsd-net@freebsd.org> Subject: Re: EM(4) - Link flap when bridged and adding members (em bridge flap) Message-ID: <66917960-0AEC-484C-929C-4B3461FE68E4@dpdtech.com> In-Reply-To: <CAFMmRNyVFtaZW0cu30f8_s8ABZJpnH%2ByPKSa67s%2BngNueWHhfw@mail.gmail.com> References: <BF885CAD-6A3A-4B79-B3E3-52BDF2C1497D@dpdtech.com> <CAFMmRNyVFtaZW0cu30f8_s8ABZJpnH%2ByPKSa67s%2BngNueWHhfw@mail.gmail.com>
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--Apple-Mail=_8AB70AB4-13BF-4236-A3E3-14FB39D4D3CD Content-Transfer-Encoding: 7bit Content-Type: text/plain; charset=us-ascii Thanks ryan - this did appear work around the issue. - David P. Discher http://davidpdischer.com/ AIM: DavidDPD | Y!M: daviddpdz On Dec 10, 2014, at 10:25 AM, Ryan Stone <rysto32@gmail.com> wrote: > From a quick look at the code, whenever an interface is added to a > bridge, if that interface does not support a feature currently enabled > on the bridge then it has to disable that feature on all member > interfaces of that bridge. That would re-init the em interface, which > would cause a link flap. > > Take a look at the ifconfig output for em0 and epair0 before epair0 is > added to the bridge. You will probably see that one or more features > that em supports is not supported by epair (I would bet on something > like LRO or TSO).. The solution would be to disable those features > from em0 before adding it to the bridge (you can persist this in > rc.conf with ifconfig_em0="...") --Apple-Mail=_8AB70AB4-13BF-4236-A3E3-14FB39D4D3CD Content-Transfer-Encoding: 7bit Content-Disposition: attachment; filename=signature.asc Content-Type: application/pgp-signature; name=signature.asc Content-Description: Message signed with OpenPGP using GPGMail -----BEGIN PGP SIGNATURE----- Comment: GPGTools - https://gpgtools.org iQEcBAEBCgAGBQJUiPGGAAoJEEmwU6XuhYWOmRcIAJC3dhd2x0hQ9io34h5SJlHG ZPMn4NNWCb9RM1oO6btq/oSlpOjpfEN07Cao9drS2qwCX18MG04PkmSelZLKeYcD bsPqUtyvjJOPZxf3RViWZtRTzN84NLWKV932zHm5sN45s4UeDGNy39GHw0sTv6zd bHZAXEiDeZGyLXCOQ3p6gsG9pJ1jxQfdmRfvoBQS3+011nvaHWrdvtObtVS+qSWj TcbR46Uu9sySRszLEBPcV/SQFWtdk67lJdH235gJn9ywlxkUW6/VzNnstwlPDktI pheHWIsmzfKsUnLjmRJ32ed1mHCAHP+5yxJfai0uS9KsbTAEfd8E5fwojb/daIE= =Le6k -----END PGP SIGNATURE----- --Apple-Mail=_8AB70AB4-13BF-4236-A3E3-14FB39D4D3CD--
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