Date: Tue, 12 Aug 2008 14:00:18 +0200 From: Max Laier <max@love2party.net> To: freebsd-stable@freebsd.org, eugen@kuzbass.ru Cc: Pete French <petefrench@ticketswitch.com>, Marian Hettwer <mh@kernel32.de> Subject: Re: lagg(4) and failover Message-ID: <200808121400.18440.max@love2party.net> In-Reply-To: <cf39e420dc78dbab1f2848a24cedfc34@localhost> References: <E1KSs4q-000AVN-4d@dilbert.ticketswitch.com> <cf39e420dc78dbab1f2848a24cedfc34@localhost>
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On Tuesday 12 August 2008 13:43:29 Marian Hettwer wrote: > Hi Pete, > > On Tue, 12 Aug 2008 12:30:12 +0100, Pete French > > <petefrench@ticketswitch.com> wrote: > >> However, IMO lacp doesn't solve that problem. lacp is used for link > >> aggregation, not failover. > > > > It does both - if one of the links becomes unavailable then it will > > stop using it. We use this for failover and it works fine, the only > > caveat being that your LACP device at the far end needs to look like > > a single phsyical device (the nicer Cisco switches do this quite happily) > > thanks for that info. > > >> The manpage states "In the event of changes in physical > > > > connectivity...". > > > >> Again, does that mean, the link needs to be physically unavailable? If > > > > so, > > > >> it'll be the same behaviour as in failover mode and doesn't solve my > >> problem of a misconfigured switch... > > > > lagg is to handle failover at the physical layer for when one of your > > ether ports fails, or someone unplugs a cable. If I understand you > > correctly you are looking for something at the next layer up, to handle > > a problem where the ports work fine, but are not going to their expected > > destinations. lagg won't do this. > > Thats unfortunate... > bonding in Linux is capable of doing this and solaris too. > Well then. At least everythings clear now. And in the end, clarifing things > was the reason for that mail thread :) You are looking for net/ifstated -- /"\ Best regards, | mlaier@freebsd.org \ / Max Laier | ICQ #67774661 X http://pf4freebsd.love2party.net/ | mlaier@EFnet / \ ASCII Ribbon Campaign | Against HTML Mail and News
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