[SR-Users] Dispatcher is using gateways in Probing mode

[alex pappas]

Hi Carsten,

I tried that before but it's not what I really need. By saying that , when I
added this function to my failure route then every call failure that
happened (routing problem let's say) then immediately this GW was set to
Inactive mode and I was not able to use it.

What I'm asking is to understand why Dispatcher module is sending calls to a
GW in P state?

Thanks

Alex



On Tue, Nov 16, 2010 at 3:54 PM, Carsten Bock <lists at bock.info> wrote:

> Hi Alex,
>
> do you have a "ds_mark_dst("p")" in your failure route? This needs to
> be called "threshhold" times in order to set the gateway to probing...
> And please be aware of timeouts: If you have a Transaction-timeout of
> e.g. 60 seconds, then the failure-route would be executed after 60
> seconds and for this time the gateway would stay "active".
>
> Carsten
>
>
> 2010/11/16 alex pappas <rebel.pappas at gmail.com>:
> > Hi Daniel,
> >
> > I have configured that option before i send it the email.
> > modparam("dispatcher", "ds_probing_threshhold", 2)
> >
> > I have gateways A,A,B,C. (A and A is the same gw. I want to send more
> calls
> > that's why is added twice)
> >
> > C is the dead gateway. It never responds back to the options because is
> not
> > a real IP.
> >
> > When Dispatcher is sending the Invites it always includes the dead gw C
> > which by the way is in probing mode.
> >
> > Doing some test calls i have the following results in send it Invites:
> >
> > A, B, A, C
> > B, A, C, A
> > A, C, A, B
> > A, B , A ,C
> > B, A, C, A
> > A, C, A, B
> > A, B , A ,C
> > B, A, C, A
> > A, C, A, B
> > A, B, A, C
> > B, A, C, A
> >
> > As you can see the C dead gw is always included to the Invites send.
> >
> > Am i missing something in the configuration?
> > I also tried to use “9” - use weight based load distribution but with no
> > success. i got in the logs that this algorithm is not implemented. I'm
> doing
> > something wrong here or is not implemented in this version of Kamailio. (
> > 3.0.1)
> >
> > Thank you in advance for your help.
> >
> > Regards
> > Alex
> >
> >
> >
> >
> > On Fri, Nov 12, 2010 at 10:14 PM, Daniel-Constantin Mierla
> > <miconda at gmail.com> wrote:
> >>
> >> Hi Alex,
> >>
> >> dispatcher module does not send new invites to inactive gateways. But in
> >> case a destination became inactive while some INVITEs were already
> through
> >> dispatcher, these recent inactive gateways may still be used for them.
> >>
> >> Regarding the probing mode, dispatcher will never select a probing
> gateway
> >> as first option to route the call, but they are kept as alternative.
> This is
> >> the current implementation, we may add a module parameter to skip
> gateways
> >> in probing mode even for secondary alternatives.
> >>
> >> Non-responsive gateways change the state after a while, see:
> >>
> >>
> http://kamailio.org/docs/modules/stable/modules_k/dispatcher.html#id2567110
> >>
> >> Cheers,
> >> Daniel
> >>
> >> On 11/12/10 12:58 PM, alex pappas wrote:
> >>
> >> Dear all,
> >>
> >> Does anyone can explain how Dispatcher module is sending calls to the
> >> gateways in the different states?
> >>
> >> I mean if I have 3 gateways and the one of them is in Probing mode why
> >> Dispatcher is continuing sending there calls? Why this gateway is not
> >> changing from Probing to Inactive since is not replaying to OPTIONS
> messages
> >> send by Kamailio?
> >>
> >> Configuration:
> >>
> >> modparam("dispatcher", "flags", 2)
> >> modparam("dispatcher", "ds_ping_interval", 5)
> >> modparam("dispatcher", "ds_probing_mode", 1)
> >> modparam("dispatcher", "ds_probing_threshhold", 2)
> >> modparam("dispatcher", "dst_avp", "$avp(s:dst_avp)")
> >> modparam("dispatcher", "grp_avp", "$avp(dsgrp)")
> >> modparam("dispatcher", "cnt_avp", "$avp(i:202)")
> >> modparam("dispatcher", "ds_append_branch", 0)
> >>
> >> using db for gw:
> >>
> >> setid 123,destination sip:xxx.xxxx.xxx, flag 0 ...
> >>
> >> in ROUTE:
> >> if(ds_select_domain("$avp(s:disp_dstgrp)", "4"))
> >>
> >> in Failure Route
> >>
> >> if(!ds_next_domain())
> >>
> >> I want Dispatcher when it sees a node gateway that is dead , to Not send
> >> any other calls.
> >>
> >> Thank you in advance
> >>
> >> Alex
> >>
> >>
> >>
> >> _______________________________________________
> >> SIP Express Router (SER) and Kamailio (OpenSER) - sr-users mailing list
> >> sr-users at lists.sip-router.org
> >> http://lists.sip-router.org/cgi-bin/mailman/listinfo/sr-users
> >>
> >> --
> >> Daniel-Constantin Mierla
> >> http://www.asipto.com
> >
> > _______________________________________________
> > SIP Express Router (SER) and Kamailio (OpenSER) - sr-users mailing list
> > sr-users at lists.sip-router.org
> > http://lists.sip-router.org/cgi-bin/mailman/listinfo/sr-users
> >
> >
>
>
>
> --
> Carsten Bock
> Schomburgstr. 80
> 22767 Hamburg
> Germany
>
> Mobile +49 179 2021244
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> mailto:carsten at bock.info
>
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