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

[Carsten Bock]

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
>
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>



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