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<p>Hello,<br>
</p>
<br>
<div class="moz-cite-prefix">On 12.02.18 13:52, Francisco Valentin
Vinagrero wrote:<br>
</div>
<blockquote type="cite"
cite="mid:D344618A4B7B0F4ABA8047A07E92D47401F673E662@CERNXCHG51.cern.ch">
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<div class="WordSection1">
<p class="MsoNormal">Hello,<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">I am configuring a Kamailio node that will
interface with 3 carriers and will implement Least Cost
Routing for around 900 destinations.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">I have already implemented a quick
prototype with the LCR module and I have been reading the
CarrierRoute doc and the CGrates site.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">I don’t really need advanced functionality,
just:<o:p></o:p></p>
<p class="MsoListParagraph"
style="text-indent:-.25in;mso-list:l0 level1 lfo1"><!--[if !supportLists]--><span
style="mso-list:Ignore">-<span style="font:7.0pt "Times
New Roman"">
</span></span><!--[endif]-->Re-routing to a backup carrier
when the main one is not available.<o:p></o:p></p>
<p class="MsoListParagraph"
style="text-indent:-.25in;mso-list:l0 level1 lfo1"><!--[if !supportLists]--><span
style="mso-list:Ignore">-<span style="font:7.0pt "Times
New Roman"">
</span></span><!--[endif]-->Ping with OPTIONS to all
carriers so I can detect if any of them is not available (à la
Dispatcher)<o:p></o:p></p>
<p class="MsoListParagraph"
style="text-indent:-.25in;mso-list:l0 level1 lfo1"><!--[if !supportLists]--><span
style="mso-list:Ignore">-<span style="font:7.0pt "Times
New Roman"">
</span></span><!--[endif]-->Translate prices from a central
DB to routing priorities.<o:p></o:p></p>
<p class="MsoListParagraph"
style="text-indent:-.25in;mso-list:l0 level1 lfo1"><!--[if !supportLists]--><span
style="mso-list:Ignore">-<span style="font:7.0pt "Times
New Roman"">
</span></span><!--[endif]-->Get some accounting post-call
info about the routing decision (acc module)<o:p></o:p></p>
<p class="MsoListParagraph"><o:p> </o:p></p>
<p class="MsoNormal">So far, while testing the LCR module I have
had some issues with the rule IDs being integers that
auto-increment, so the LCR rules need to be referenced from
the rule_target table using this numeric ID. I can see some
issues when scaling this to 900 lcr_rules and 2700
lcr_rule_targets with 3 priorities.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">In addition to that, I think the OPTIONS
mechanism is just used by the lcr module when a gateway is
marked as defunct, but the gateways are not actively monitored
in the normal status. Is this correct?<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">I have been considering CarrierRoute, which
has a slightly simpler table structure, but I can’t find any
other advantage for my use case. Regarding CGrates, it looks
great but it looks like it exceeds my current needs.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">For those who have implemented LCR in your
kamailios, am I missing something regarding performance,
scalability, etc?<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Are there any newer modules that can
implement this, or maybe just a dispatcher-on-steroids setup
will do the trick?<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<br>
</div>
</blockquote>
Look also at drouting module, the latest version should do OPTIONS
keep alives using keepalive module, otherwise it is a lcr
implementation as well -- I haven't tested myself the keep alive
feature, though.<br>
<br>
As for me, typically I go in this case for a combination of mtree +
dispatcher. I have mtree translating from longest prefix to a
dispatcher group id, inside dispatcher group you can use priority
based routing. This works just fine even when you end up in several
dispatcher groups with same destinations but different order based
on priority per group.<br>
<br>
You can even map the prefix in mtree to dispatcher group +
dispatching algorithm, latest version supports having many columns
loaded in the value and then you can use script operations to split.<br>
<br>
Cheers,<br>
Daniel<br>
<pre class="moz-signature" cols="72">--
Daniel-Constantin Mierla
<a class="moz-txt-link-abbreviated" href="http://www.twitter.com/miconda">www.twitter.com/miconda</a> -- <a class="moz-txt-link-abbreviated" href="http://www.linkedin.com/in/miconda">www.linkedin.com/in/miconda</a>
Kamailio Advanced Training - March 5-7, 2018, Berlin - <a class="moz-txt-link-abbreviated" href="http://www.asipto.com">www.asipto.com</a>
Kamailio World Conference - May 14-16, 2018 - <a class="moz-txt-link-abbreviated" href="http://www.kamailioworld.com">www.kamailioworld.com</a></pre>
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