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Connectivity Correlation configuration

Solved682 views28th August 2024correlation engine loop Visio
2
Julian Yepe [SLC] [DevOps Advocate]227 3rd July 2024 0 Comments

Hello All,

I am seeing this error be logged in the alarm console occur on a DMA:

Element name   Element type     Parameter          Value    Time

lmc-ctl-prd-02   DataMiner Agent  Correlation engine     Connectivity Correlation configuration is incorrect (see comments) Today 3:40:01 PM

Comments:

There is a loop involving ‘LMC-TECHEX-CORE-01’ (4613/15/8501;1:8502;1:8503;1:8504;1:8505;1:8506;1:8507;1:8508;1:8509;1:8510;1:8511;1:8512;1:8513;1:8514;1:8515;1:8516;1:8517;1:8518;1:8519;1:8520;1:8521;1:8522;1:8701;1:8702;1:8703;1:8704;1:8705;1:8706;1:8707;1:8708;1:8709;1:8710;1:8711;1:8712;1:8713;1:8714;1:8715;1:9601;1:9602;1:9625;1:9621;1:9603;1:9604;1:9605;1:9606;1:9631;1:9607;1:9608;1:9609;1:9610;1:9622;1:9611;1:9612;1:9613;1:9614;1:9615;1:9616;1:9617;1:9618;1:9619;1:9620;1:9623;1:9624;1:9632;1:9626;1:9627;1:9628;1:9629;1:9633;1:9634;1:9635;1:9630;1:9636;1:9637;1:9638;1:9639;1:9640;1:9641;1:9642;1:9643;1:9644;1:10301;1:10302;1:10303;1:10304;1:10305;1:10306;1:10307;1:10308;1:10309;1:10310;1:10311;1:10312;1:11201;1:11202;1:11203;1:11204;1:11205;1:11206;1:11207;1:11208;1:11209;1:11210;1:11211;1:11212;1:11213;1:11214;1:11215;1:11216;1:11217;1:11218;1:11219;1:11220;1:11221;1:11222;1:11223;1:11224;1:11225;1:11226;1:11227;1:11228;1:11229;1:11230;1:11231;1:11232;1:11233;1:8901;1:8902;1:8926;1:8903;1:8904;1:8916;1:8915;1:8905;1:8906;1:8927;1:8925;1:8914;1:8907;1:8917;1:8928;1:8918;1:8924;1:8919;1:8920;1:8921;1:8922;1:8923;1:8908;1:8910;1:8909;1:8911;1:8912;1:8913;1:8930;1:8931;1:8932;1:8929;1:8933;1:10401;1:10402;1:10403;1:10404;1:10405;1:10406;1:10407;1:10408;1:10409;1:10410;1:10411;1:10412;1:11401;1:11402;1:11403;1:11404;1:11405;1:11406;1:11407;1:11408;1:11409;1:11410;1:11411;1:11412;1:11413;1:11414;1:11415;1:11416;1:11417;1:11418;1:11419;1:11420;1:11421;1:11422;1:11423;1:11424;1:8400) and ‘LMC-TECHEX-CORE-01’ (4613/15/8501;1:8502;1:8503;1:8504;1:8505;1:8506;1:8507;1:8508;1:8509;1:8510;1:8511;1:8512;1:8513;1:8514;1:8515;1:8516;1:8517;1:8518;1:8519;1:8520;1:8521;1:8522;1:8701;1:8702;1:8703;1:8704;1:8705;1:8706;1:8707;1:8708;1:8709;1:8710;1:8711;1:8712;1:8713;1:8714;1:8715;1:9601;1:9602;1:9625;1:9621;1:9603;1:9604;1:9605;1:9606;1:9631;1:9607;1:9608;1:9609;1:9610;1:9622;1:9611;1:9612;1:9613;1:9614;1:9615;1:9616;1:9617;1:9618;1:9619;1:9620;1:9623;1:9624;1:9632;1:9626;1:9627;1:9628;1:9629;1:9633;1:9634;1:9635;1:9630;1:9636;1:9637;1:9638;1:9639;1:9640;1:9641;1:9642;1:9643;1:9644;1:10301;1:10302;1:10303;1:10304;1:10305;1:10306;1:10307;1:10308;1:10309;1:10310;1:10311;1:10312;1:11201;1:11202;1:11203;1:11204;1:11205;1:11206;1:11207;1:11208;1:11209;1:11210;1:11211;1:11212;1:11213;1:11214;1:11215;1:11216;1:11217;1:11218;1:11219;1:11220;1:11221;1:11222;1:11223;1:11224;1:11225;1:11226;1:11227;1:11228;1:11229;1:11230;1:11231;1:11232;1:11233;1:8901;1:8902;1:8926;1:8903;1:8904;1:8916;1:8915;1:8905;1:8906;1:8927;1:8925;1:8914;1:8907;1:8917;1:8928;1:8918;1:8924;1:8919;1:8920;1:8921;1:8922;1:8923;1:8908;1:8910;1:8909;1:8911;1:8912;1:8913;1:8930;1:8931;1:8932;1:8929;1:8933;1:10401;1:10402;1:10403;1:10404;1:10405;1:10406;1:10407;1:10408;1:10409;1:10410;1:10411;1:10412;1:11401;1:11402;1:11403;1:11404;1:11405;1:11406;1:11407;1:11408;1:11409;1:11410;1:11411;1:11412;1:11413;1:11414;1:11415;1:11416;1:11417;1:11418;1:11419;1:11420;1:11421;1:11422;1:11423;1:11424;1:8400) (multiple chains probably define reverse paths)

To give some context, this error comes up when the user applies a Visio to the element. When the visio is applied, the memory usage also spikes up. When the visio is taken off, the memory usage drops and error is cleared. The visio is a bit complex with a few pages, but I am wondering how does the visio relate to the correlation engine? And how does it cause a loop with a bunch of parameters that belong to a table?

Any help would be greatly appreciated.

Marieke Goethals [SLC] [DevOps Catalyst] Selected answer as best 28th August 2024

3 Answers

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Davy Degrande [SLC] [DevOps Advocate]1.43K Posted 8th July 2024 0 Comments

Hello Julian,

That would indeed be the problem, the top elements shouldn’t be the same as the RCA calculation would then not be able to give you a correct RCA level for those elements.
So if you say these are created by a service template. The top level should be one less then I would say. Looking at the screen shot the same element can be on each side at the top but only once.

The reason why you get this notice upon applying a visio is most likely because this generates a new ServiceInfoEventMessage (didn’t fully debug/analyse the code flow) which triggers the check for RCA topology looping again.

Marieke Goethals [SLC] [DevOps Catalyst] Selected answer as best 28th August 2024
2
Davy Degrande [SLC] [DevOps Advocate]1.43K Posted 4th July 2024 0 Comments

Hello Julian,

This would indicate there are issues loading the topology for configured RCA chains. Please have a look at the “Correlation > Connectivity Editor > Launch connectivity Editor” in the DataMiner Cube application.

Select or go through the chains configured and identify the ones involving the mentioned elements and edit where needed to avoid the looping.

The reload happens on several occasions, a file change on the topology.xml, reloading or configuring of services, …

Davy Degrande [SLC] [DevOps Advocate] Answered question 4th July 2024
0
Julian Yepe [SLC] [DevOps Advocate]227 Posted 5th July 2024 0 Comments

Hello Davy,

Thank you for your response. I will respond to here to be able to add screenshots. It does not seem like the customer has any chains setup via the the tool. however, they do have RCA chains setup in a service template where the first four elements are the same and they point to themselves (which is also the element in question). Can this be the cause for the looping? If so, what is the recommended approach and how does this relate to applying a viso on that element?

Julian Yepe [SLC] [DevOps Advocate] Answered question 5th July 2024
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