Dear technical team, I want to divide the value of two channels. let me explain more about my problem. i want to divide the send traffic to receive and then multiply it to 100 : (send/receive)*100 , i created a sensor factory and in Channel Definition part i wrote : ((2348,0)/(2348,1))*100 but i got a bad request error : The validation of at least one of the new objects faild because of the following : . At least one channel must be defined. i don't know what to do to resolve this problem. ive to mention that the sensor is port channel interface of a cisco router and it has traffic value in gigabit /s . i would really appreciate it if you could help me, thanks in advance.

Article Comments

Hello,

thank you for the KB Post. From the description it seems you've missed the keywords Channel in your definition:

(Channel(2348,0)/Channel(2348,1))*100

best regards.


Mar, 2018 - Permalink

thanks for your answer , but ive tried with the channel keyword as you mentioned as well , but ive got the error for bad request : The validation of at least one of the new objects failed because of the following : . At least one channel must be defined.

what can i do to resolve the problem?


Mar, 2018 - Permalink

According to the error message, the actual channel number wasn't defined:

#1:Channel_NAME
(Channel(2348,0)/Channel(2348,1))*100

Mar, 2018 - Permalink

thanks you very much for the useful hint , i made that change and that's the real error i gave : The validation of at least one of the new objects failed because of the following: Error in channel "UL/DL[]" (4) : Multiplication or division of two delta channels. (code: PE2007)

as i mentioned i want to measure the upload to download ration by dividing the upload and download channel of my uplink's graph , i'd be so appreciated if you could help me solve that.


Apr, 2018 - Permalink

I see, you are using delta based sensors here (Traffic Sensors). You cannot use such sensors in multiplication / division formulas with each other.
You'll have to use two channels here, one for each direction of traffic and calculate a percentage base (for example both to 100 mbit).


Apr, 2018 - Permalink

i see , i used zabbix for this issue and it could handle my request. i'd be appreciate that if PRTG could help us for this needs.


Apr, 2018 - Permalink