[128564] in North American Network Operators' Group

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Re: IPv6 Server Load Balancing - DSR

daemon@ATHENA.MIT.EDU (Owen DeLong)
Thu Aug 12 12:33:12 2010

From: Owen DeLong <owen@delong.com>
In-Reply-To: <1CBF69B8-B1BE-4485-962C-71A9BCBA8F98@oav.net>
Date: Thu, 12 Aug 2010 09:28:01 -0700
To: Xavier Beaudouin <kiwi@oav.net>
Cc: nanog@nanog.org, Leland Vandervort <leland@taranta.discpro.org>
Errors-To: nanog-bounces+nanog.discuss=bloom-picayune.mit.edu@nanog.org


On Aug 12, 2010, at 6:19 AM, Xavier Beaudouin wrote:

> Hi Leland,
>=20
> Le 12 ao=FBt 2010 =E0 15:11, Leland Vandervort a =E9crit :
>=20
>> OpenSolaris ILB is open solution ;)
>>=20
>> but yea, that's what we've started looking at -- hence LVM / HAProxy =
as well.. (though LVM is IPv4 only, and HAProxy is NAT only for IPv6)
>>=20
>> does relayd support UDP as well as TCP or is it layer7 only like =
HAProxy ?
>=20
> It does everything... :) L2 -> L7...
>=20
>> In the case of ILB, I'm not convinced that it's a problem with the LB =
itself, but rather the idiosyncrasies of ND in IPv6 that is causing the =
problem.. but I may be wrong... at any rate, something's amiss ...=20
>=20
> Maybe on some setup you should desactivate ND...
>=20
> Xavier

If you're putting the DSR address on an interface other than loopback, =
you probably need to turn of DAD on the interface with the DSR address =
otherwise DAD
will shut down that address on the interface when it sees other servers =
with the same address. Sometimes it will shut down all but one, =
sometimes it will
shut down all.


Owen



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