[Kamailio-Users] [LCR] About ping

[Ricardo Martinez]

Hello.
I was reading this thread and it seems to me very interesting.  In fact, I was looking for a parameter that would let me mark a gateway as down and then avoid the LCR module keep sending calls to it.
So just to clarify this topic.
If I'm using Kamailio 1.5.1 with LCR in front of several gateways, and one of them goes down.  The gateway is marked as down? Isn't?
What parameter controls the "ping" to the gateways?.  Can I set a gateway down manually?.
I'm using "fr_timer" to 3, is this a problem?

Thanks in advance.

Regards,
Ricardo Martinez.-

-----Mensaje original-----
De: users-bounces at lists.kamailio.org [mailto:users-bounces at lists.kamailio.org] En nombre de Iñaki Baz Castillo
Enviado el: lunes, 23 de marzo de 2009 6:54
Para: Alexandr Dubovikov
CC: kamailio
Asunto: Re: [Kamailio-Users] [LCR] About ping

2009/3/23 Alexandr Dubovikov <shurik at start4.info>:
> On Mon, Mar 23, 2009 at 11:15:52AM +0100, Iñaki Baz Castillo wrote:
>> 2009/4/1 Alexandr Dubovikov <shurik at start4.info>:
>> > On Fri, Mar 20, 2009 at 10:21:20PM +0100, Andreas Heise wrote:
>> >> Hello Iñaki,
>
> Hi Inaki,
>
>> >
>> > Hi all,
>> >>
>> >> you should ask Alexandr he has introdused this feature with rev5452,
>> >> but I'm not sure if he is on the lists all the time, so I'll forward your
>> >> question
>> >> to him...
>> >
>> > sorry, I am currently offline and couldn't answer directly to the list.
>> >
>> > anyway. I agreed, 180 seconds it's too big ping interval, but it couldn't be
>> > also less 32 seconds.
>> >
>> >
>> > http://www.ietf.org/rfc/rfc3261.txt
>> >
>> > 17.2.2 Non-INVITE Server Transaction
>> >
>> >
>> > T1 = 500 ms.
>> >
>> >
>> > Timer J  64*T1 for UDP    Section 17.2.2       Wait time for
>> >         0s for TCP/SCTP                       non-INVITE request
>> >
>> > so, the timer for "completed" is 32 seconds and couldn't be less.
>> >
>> >
>> > of course, you can use less value, but on own risk :-)
>> > RFC 3261 are not recommendet it :)
>>
>> Thanks for pointing it out.
>> However, if a gw takes so long time (~32 seconds) to respond I prefer
>> to consider it as "offline" :)
>
> don't forget to disable ping for this gateway, because finaly you will have
> a DDOS effect of the "offline" gw. :-)

Well, If the host is already offline then it doesn't matter to kill it more XD

Thanks.

-- 
Iñaki Baz Castillo
<ibc at aliax.net>

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