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Date:      Wed, 23 Nov 2005 12:09:04 +0200
From:      Atanas Yankov <xds@LanGame.Net>
To:        freebsd-net@freebsd.org
Subject:   Re: carp questions
Message-ID:  <43843FC0.3080903@LanGame.Net>
In-Reply-To: <20051123091034.15367.qmail@web51603.mail.yahoo.com>
References:  <20051123091034.15367.qmail@web51603.mail.yahoo.com>

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The better solutuon to test how carp worked is a arping :))) not ssh or 
other and you may be
need to set a /32 mask for a virtual  ip address , if you remind how 
works ip alliasing  in freebsd.

br,
CCNP Atanas Yankov
Network Administrator
AngelSoft Ltd.

>Hi, 
> 
> I have 2 machines running freebsd 6.0 compiled with "device carp". The example in the carp manual slightly confuses me. I can't make those 2 machines to appear as one... I hope you can help me.
> machine A has xl0 with assigned ip of 10.10.8.145
> machine B has xl0 with assigned ip of 10.10.8.146
> 
> 
> Now following the example on carp(4) manual:
> On machine A:
> ifconfig carp0 create
> ifconfig carp0 vhid 1 pass mypasswd 10.10.8.147/24
> so now, machine A shows these in ifconfig:
> carp0: flags=41 mtu 1500
> inet 10.10.8.147 netmask 0xffffff00
> carp: BACKUP vhid 1 advbase 1 advskew 0
> meanwhile on machine B
> ifconfig carp0 create
> ifconfig carp0 vhid 1 advskew 100 pass mypasswd 10.10.8.147/24
>  and I got
> 10.10.8.147/24 is duplicated by xl0 (10.10.8.145/24)
> 
> What I wanted to do is to do some failover... ssh to 10.10.8.147 and see what machine it would connect to.. then pull the utp out... and repeat the process.. this time i should be able to ssh to the backup server instead..
> 
>
>		
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