[OpenSIPS-Users] Introducing OpenSIPS 2.4

Bogdan-Andrei Iancu bogdan at opensips.org
Thu Nov 16 07:24:15 EST 2017

Hi Maxim,

Thank you for the valuable input - it is true what you are saying IF the 
media relay has the ability to publish (or report) its internal load. 
What you are describing here is what we did in terms of SIP call 
balancing, with FreeSWITCH - local call counting versus pulling call 
counters from FS.

In regards to the second topic, that is true also, let me give it some 
thoughts. The only issue I see here is with "let each vendor to 
implement proper hooks" :). But as concept it is something definitely 

Best regards,

Bogdan-Andrei Iancu
   OpenSIPS Founder and Developer

On 11/11/2017 07:01 AM, Maxim Sobolev wrote:
> Bogdan, with regards to the media relays clustering what's the 
> advantage of sharing that load info between each signalling node 
> versus having each node tracking this independently? In my view the 
> latter could be more reliable and much less complicated construct. The 
> only disadvantage is that you'd get more command load on relays, 
> however at least with the RTPproxy pulling load stats is very 
> lightweight operation so even with tens of signalling nodes pulling 
> single media relay every 1-10 seconds it won't cause any noticeable 
> performance degradation on the relay. On the flip side, each 
> signalling node would get accurate view from its vantage PoV, so in 
> the case of geographically distributed system when signalling node can 
> only see subset of all media nodes it would still be able to make 
> proper decisions. This is the approach we use in the rtp_cluster and 
> it works pretty well with cluster size of up to 5 signalling and 10 
> RTP handling nodes, 40-50K media sessions in total. It can also give 
> you accurate RTT information, so your signalling node can not only 
> factor in the load but also proximity or each and every media relay.
> As far as the load tracking is concerned, I think the approach to 
> implement "b2b-driven routing" using API that is specific to each 
> particular b2b is somewhat wasteful and is not very future-proof. What 
> we would like to see instead, is for opensips to publish some kind of 
> API (preferably SIP-based, using OPTIONS or SUBSCRIBE/NOTIFY 
> mechanism) to pull this information out and let each b2b vendor to 
> implement proper hooks. Then it can go as far as making this info some 
> king of RFC.
> Anyhow, just my $0.02c. Not volunteering to do opensips side 
> (ENOTIME), but if opensips project comes up with the reasonable 
> b2bua-agnostic load query API to use we might look at implementing it 
> in the sippy [py/go]-B2BUAs.
> -Max
> On Wed, Nov 8, 2017 at 9:31 AM, Bogdan-Andrei Iancu 
> <bogdan at opensips.org <mailto:bogdan at opensips.org>> wrote:
>     Hi Nuno,
>     On the Asterisk part, the plan is to do exactly what we already
>     have for FreeSWITCH (see
>     https://blog.opensips.org/2017/03/01/freeswitch-driven-routing-in-opensips-2-3/
>     <https://blog.opensips.org/2017/03/01/freeswitch-driven-routing-in-opensips-2-3/>)
>     In terms of clustering media relays, is about the ability to share
>     the state (enabled/disabled) between all the cluster nodes using
>     the media relays. Optionally, we are looking in adding the ability
>     to balance the traffic between the relays, in a cluster-level
>     aware (all the nodes in the cluster will share the information on
>     the load of the media relays )
>     Regards,
>     Bogdan-Andrei Iancu
>        OpenSIPS Founder and Developer
>        http://www.opensips-solutions.com <http://www.opensips-solutions.com>
> _______________________________________________
> Users mailing list
> Users at lists.opensips.org
> http://lists.opensips.org/cgi-bin/mailman/listinfo/users

-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.opensips.org/pipermail/users/attachments/20171116/23e60790/attachment-0001.html>

More information about the Users mailing list