Date: Thu, 19 May 2011 09:58:10 +0300 From: Igor Anishchuk <igor.anishchuk@gmail.com> To: freebsd-net@freebsd.org Subject: ixgbe> vlan addition and removal brings the interfaces down and up Message-ID: <BANLkTinL3pf_irOAc15Ubp%2BGquM5D60d%2Bw@mail.gmail.com>
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Hi All, I've been using Intel E10G42AFDA 10Gbit/s AF DA Dual Port adapters with direct attach cables and there is one thing keeps bothering me. I've been searching the Internet for any information with no luck. I would also assume that the problem is widely known, and I found one related PR kern/141285 but that one was closed unsolved. When a VLAN interface is added or removed to from the ix interfaces the parent interface is briefly brought down and up. This event is visible for all applications and the switches. With my use case I add and remove VLAN interfaces on the fly and the described behavior causes undesired effects, especially for BGP daemons that are configured to monitor one of permanent VLAN interfaces. I use FreeBSD 7-STABLE and the behavior is the same with stock drivers, with 2.2.3 and with 2.3.8 drivers downloaded from Intel web site. I have attempted to disable -vlanhwtag, -vlanhwfilter and -vlanhwtso with no effect. Could someone help me to stop the cards behaving this way? I do not mind some performance penalties, nor running in permanent promiscuous mode. I just want the card to stay up all the time regardless of the vlan interfaces attached to it. Any help, links, patches are much appreciated. Regards, Igor Anishchuk
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