Date: Wed, 12 Jan 2005 16:36:44 -0500 From: Mike Tancsa <mike@sentex.net> To: freebsd-current@freebsd.org Subject: em0 link transitions when aliasing an interface Message-ID: <6.2.0.14.0.20050112155023.06444c18@64.7.153.2>
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Does anyone know of a way to avoid bouncing the em NIC when adding or
removing aliases ? In cases where the switch's port blocking kicks in,
this can take the box off line for a problematic amount of time.
e.g.
ifconfig em0 19.168.13.9 netmask 255.255.255.252 alias
will down and up the interface. I dont know of any other drivers that work
this way.
On RELENG_4, it used to only have this problem behavior when the NIC was in
autoneg. But this is no longer the case in RELENG_5 as all media-opts
(full / half / autoneg) work this way now.
Are there any tunables that would govern this behavior ?
Thanks for any insight,
---Mike
--------------------------------------------------------------------
Mike Tancsa, tel +1 519 651 3400
Sentex Communications, mike@sentex.net
Providing Internet since 1994 www.sentex.net
Cambridge, Ontario Canada www.sentex.net/mike
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