[128565] in North American Network Operators' Group
Re: IPv6 Server Load Balancing - DSR
daemon@ATHENA.MIT.EDU (Leland Vandervort)
Thu Aug 12 12:40:38 2010
From: Leland Vandervort <leland@taranta.discpro.org>
In-Reply-To: <F2CD754D-DF9F-456C-B710-33DA446C11B0@delong.com>
Date: Thu, 12 Aug 2010 18:40:23 +0200
To: Owen DeLong <owen@delong.com>
Cc: nanog@nanog.org
Errors-To: nanog-bounces+nanog.discuss=bloom-picayune.mit.edu@nanog.org
Hi Owen,=20
The DSR address is indeed on a loopback in our case.
lo Link encap:Local Loopback =20
inet6 addr: ::1/128 Scope:Host
inet6 addr: xxxx:xxxx:x:xxxx::xx/128 Scope:Global
The mystery continues...=20
Leland
On 12 Aug 2010, at 18:28, Owen DeLong wrote:
>=20
> On Aug 12, 2010, at 6:19 AM, Xavier Beaudouin wrote:
>=20
>> 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
>=20
> 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.
>=20
>=20
> Owen
