[Serusers] sip load balancing

[a c]

I haven't looked at lcr yet. Seems like a little more
involved. Not sure how, but it seems logical to extend
dispatcher. How big of a change would this be?

I will also readup on lcr.

thank you
ac
--- "Greger V. Teigre" <greger at teigre.com> wrote:

> I see. Have you looked at what the lcr module can
> do?  You could possibly 
> create patterns for different gateways and thus
> create a "static" load 
> balancing with multiple GWs that can be picked up in
> failure route.
>     If not, maybe extending dispatcher could be an
> idea?  It's generally 
> better to build on existing functionality in
> existing modules than to 
> introduce another one.  Your module would then
> probably not be taken into 
> CVS...
> g-)
> 
> a c wrote:
> > I got the dispatch module working. The only thing
> that
> > was of concern was that it does not failover to
> > another server on the dispatcher list if one of
> the
> > servers fail. So I need to have a dedicated backup
> > server {failure route} just to field these calls.
> I
> > guess this cannot be done since the dispatcher is
> a
> > stateless module {like Andrei mentioned}
> >
> > alex
> >
> >
> > --- "Greger V. Teigre" <greger at teigre.com> wrote:
> >
> >> I assume you have looked at dispatcher module.
> >> Without completely
> >> understanding what you are trying to accomplish:
> Why
> >> can't use that module?
> >> g-)
> >>
> >> Karunakar Chemudugunta wrote:
> >>> I have a same problem as explained below.
> >>>
> >>> PSTN ---> VOIP GATEWAY(Cisco AS5400) -->
> >> SER-------> Multiple media
> >>> gateways.
> >>>
> >>> Planning to depoy media servers which can able
> to
> >> running IVR
> >>> fuctionality and would like to use SER in front
> of
> >> lot of media
> >>> gateways.
> >>>
> >>> Each media gateway, might be running lot of user
> >> agents which are able
> >>> to serve IVR fuctionality. all these user agents
> >> are going to register
> >>> with SER with <media server hostname_channel
> >> number>  format as user
> >>> name. Eg. mediaserver1_ch1 at mydomain.com
> >>>
> >>> Otherside, SER will receive call from PSTN
> through
> >> VOIP Gateway with
> >>> multiple DIDs and these calls need to route
> calls
> >> to media gateways (
> >>> typical hosted call center environment )
> >>>
> >>>
> >>> I have tried with lot of possibities using
> ser.cfg
> >> file and did n't
> >>> find way to route calls to media gateways.
> >>>
> >>> Just I am thinking, it would be possible to
> write
> >> another module or
> >>> part of userloc module, which gives a routing
> >> fuctionality like cyclic
> >>> or rotary senarios which helps load balancing
> and
> >> easy maintenance of
> >>> media servers.
> >>>
> >>> Possible solution
> >>> ------------------------------
> >>> Lets assume, if we have resource file called
> >> resource.cfg which has
> >>> all did and resource mapping. All resource names
> >> are substring of
> >>> usernames of useragents in media servers.
> >>> resource.cfg
> >>> ##########################################
> >>> resource:resource1 =
> >>>
> >>
> >
>
mediaserver1,mediaserver2,mediaserver3,mediaserver4,mediaserver5
> >>>
> >>> did:8005551212 = cyclic:resource1
> >>> did:8005551213 = rotary:resource1
> >>>
> >>> ##########################################
> >>>
> >>> every invite message need to call fuction like
> lookup_route()
> >>> instead of lookup() in ser.cfg
> >>>
> >>>
> >>> this fuction instenally calls routing module,
> >> searches for did in
> >>> resource file and get corresponding resource
> type(
> >> rotary or cylic),
> >>> resource name.
> >>>
> >>> search each resource member in useloc using
> >> function get_urecord  and
> >>> it if avaialbe and route calls to that particar
> >> user.
> >>>
> >>> Summary:
> >>>
> >>> 1.  ser receives call from PSTN
> >>> 2.  Finds resource name for DID
> >>> 3.  Find resource string depend of type of
> routing
> >> from resorce list.
> >>> 4.  Serach usrloc database with resource string
> as
> >> sub string of
> >>> usernames in userloc database.
> >>> 5. Forward call to that particular media
> gateway.
> >>>
> >>>
> >>> Welcome for any comments and thoughts ?
> >>>
> >>> Thanks,
> >>> Karun Chemudugunta
> >>>
> >>>
> >>>
> >>>
> >>>
> >>> On 5/10/05, a c <lra101 at yahoo.com> wrote:
> >>>> hello Iqbal,
> >>>>
> >>>>  just need the SIP messages load balance across
> >>>> servers. No RTP.
> >>>>
> >>>> thank you
> >>>> ac
> >>>>
> >>>> --- Iqbal <iqbal at gigo.co.uk> wrote:
> >>>>> mediaproxy can do it using dns. Am assuming
> you
> >> want
> >>>>> the rtp stream load
> >>>>> balanced, if its the sip messages, search
> >> throuygh
> >>>>> the archives there is
> >>>>> along discussion bout howto use LVS and load
> >>>>> balancing....in short
> >>>>> doesnt seem to work, cause SIP uses udp
> >>>>>
> >>>>> Iqbal
> >>>>>
> >>>>> a c wrote:
> >>>>>
> >>>>>> hello,
> >>>>>>
> >>>>>> got a question on SER. Could SER do load
> >> balance
> >>>>>> across SIP servers?
> >>>>>>
> >>>>>> for example:
> >>>>>>
> >>>>>> SIP carrier --> SER --> Media/App Servers
> >>>>> {multiple}
> >>>>>>
> >>>>>> Are there any Configuration examples I can
> look
> >> at?
> >>>>>>
> >>>>>> thank you
> >>>>>> ac
> >>>>>>
> >>>>>>
> >>>>>>
> >>>>>> __________________________________
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> >>>>>> Take Yahoo! Mail with you! Check email on
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> _______________________________________________
> 
=== message truncated ===


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