1 Sep
2006
1 Sep
'06
12:49 p.m.
Hi list,
I was wondering whether I could use multiple rtpproxy daemons along one
OpenSER instance, in order to both provide a failover mechanism as well
as load-balacing.
Google immediately pointed me out the following thread:
http://www.openser.org/pipermail/users/2005-October/001071.html
It happens that openser/modules/nathelper/nathelper.c contains the
following comment:
% 2005-02-24 Added support for using more than one rtp proxy, in which
% case traffic will be distributed evenly among them. In addition,
% each such proxy can be assigned a weight, which will specify
% which share of the traffic should be placed to this particular
% proxy.
%
% Introduce failover mechanism, so that if SER detects that one
% of many proxies is no longer available it temporarily decreases
% its weight to 0, so that no traffic will be assigned to it.
% Such "disabled" proxies are periodically checked to see if they
% are back to normal in which case respective weight is restored
% resulting in traffic being sent to that proxy again.
%
% Those features can be enabled by specifying more than one "URI"
% in the rtpproxy_sock parameter, optionally followed by the weight,
% which if absent is assumed to be 1, for example:
%
% rtpproxy_sock="unix:/foo/bar=4 udp:1.2.3.4:3456=3
udp:5.6.7.8:5432=1"
At first glance, I would say the aforementioned comment states that
nathelper achieves both failover and weighted load-balancing. Can anyone
confirm this ?
Ultimately, I would like to do use the following arch :
________+----------+
/________| RTPProxy |
+---------+ // +----------+
| OpenSER |_____//
+---------+ /\_________+----------+
/ \ ______| RTPProxy |
+---------+ / \/ +----------+
| OpenSER |__/_____/\
+---------+ \ \_____+----------+
\____________| RTPProxy |
+----------+
If I understand correctly how it works, this should be possible to use N
OpenSER instances along with M RTProxy instances. Am I right ?
Thank you.
Best regards,
--
Jeremie Le Hen
< jeremie at le-hen dot org >< ttz at chchile dot org >