RE: load balancing H.323

Hi Cemil.

I am neither an expert nor have done this myself, but I would like to
agree with you that this should be doable thou I know many people have
had problems with similar protocols. I can not really say I have heard a
success story regarding this particular scenario yet. That could be
because no one has done it, or because I have not really done any
research. 

It feels like it should "just" be a matter of grouping the right ports
and protocols (tcp/udp) together and make them persistent, but I might
just be naive thinking so.
Well, anyway, the best I can do is to point you at this:
http://archive.linuxvirtualserver.org/html/lvs-users/2006-04/msg00197.ht
ml

I wish you luck and would really like to hear you figure this out.

Regards
/Mattias


-----Original Message-----
From: [email protected]
[mailto:[email protected]] On Behalf Of Cemil
Azizoglu
Sent: Tuesday, July 25, 2006 7:48 PM
To: [email protected]
Subject: load balancing H.323

Hi,

I'm trying to load-balance my H323 endpoint cluster
using LVS (ultramonkey). I'm using fwmark with
persistence in LVS-NAT configuration with two
interfaces (one facing the real servers the other
facing the public) at the director.

I use Netmeeting to make an H.323 call to the Virtual
Server and I see initial activity on h323 port (1720)
in one of the realservers, but then the protocol stops
advancing. I checked connectivity (pings and
traceroutes) between real servers and the client, and
everything checks out.

Has anyone tried load balancing H.323 real servers? Do
you have any idea what the problem might be? 

After so many tries, I have doubts about inherent
load-balancibility of a protocol like H.323.
load-balancing a protocol like HTTP is quite
straightforward. But I would like to know the
conditions, if there any,  for a protocol under which
LVS would not be able to load balance. It seems that
you should be able to load-balance *any* given
protocol with aid of persistence and fwmark. I'll put
in more time to get it to work, but I just need an
expert's blessing that it's doable.

I am familiar with the austintek FAQ, and have read it
thoroughly.

At this point any help/insight/example is appreciated.

Regards,
Cemil




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