MikroTik

It's hard, I check all your script to find your idea to solve problem.
You not have any part of script to grab RSSI. If you provide proper some "/... print detailed" or with as-value print then I can understand what parameter lookup and give you a hint.
For now I must say thay I haven't any LTAP and I use Huawei USB LTE modems, works as router itself (Hi.Link), with custom firmware who can change LTE Band.

You can change LTE Band?
Then I don't know parameters with RSSI for your scenario.

More data from you must be provided

Next,
I read https://wiki.mikrotik.com/wiki/Manual:Interface/LTE and https://wiki.mikrotik.com/wiki/Dual_SIM_Application

On some LTE MikroTik devices can be set specific LTE Band via AT command. This is important because you can select this who have a best speed in your region.
put [/interface lte get lte1 band ]
put [/interface lte get lte1 running ]
You can have both lte1 and lte2 running at the same time and select via script the MultiWan policy from just FialOver to many method to do it.

Easy way to reach "The LTAP can switch the Dual SIM when the RSSI was weakness?" is by:

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# ? You must correct this: /local rsrp-lte1 [/interface lte get lte1 rsrp]; ?
local rsrp-lte1_v1 "-87dBm";
local rsrp-lte1_v2 [/pick $rsrp-lte1_v1 0 [/find $rsrp-lte1_v1 dBm]];
/if ($rsrp-lte1_v2 > -102) do={put "Disable weak lte1 "};

Better is change route and have possibility to check and wait until rsrp cameback to good signal.

But, please, use RSRP for indication of signal strength ... RSSI includes also all the interference.

If this is not DualSIM but SIM1 or SIM2 then in how way you select the active one? You cannot check the rsrp/rssi etc from non-used one?

some of new LTE MikroTik devices have even 3x SIM and only one can be active - not good.

How often you will be run this scheduler, every 1, 2, 3, 5 minutes interval?
Please confirm that
/system routerboard modem set sim-slot=up <- this activate sim1 and deactivate sim2
/system routerboard modem set sim-slot=down <- this activate sim2 because this is the last one
This works in this way ?

I ask because the in https://wiki.mikrotik.com/wiki/Manual:TOC I cannot found description of this options in /system routerboard modem

For old Ros version, the "modem" was "sim", so in this URL,it was /system routerboard Sim .

Simply scheduler not good, I means if the rssi/rsrp was Good, not need to switch the sim slot .

/system routerboard modem set sim-slot=up <- this activate sim1 and deactivate sim2
/system routerboard modem set sim-slot=down <- this activate sim2 because this is the last one
This works in this way ?

# ? You must correct this: /local rsrp-lte1 [/interface lte get lte1 rsrp]; ?

Thanks，however use the rssi or rsrp,the script can't switch the
Sim.

For old Ros version, the "modem" was "sim", so in this URL,it was /system routerboard Sim .

You write about CLI. The url in wiki not have article who describe a property of parameters in /system routerboard modem.

Simply scheduler not good, I means if the rssi/rsrp was Good, not need to switch the sim slot .

Not agree. Scheduler can run every 4 minutes and check the state of running currently lte, rssi, rsrp etc. and do some action. This is fixing loop running every 4 minutes and we must have sure that our delay and inscript actions finish before that time. This works like watchdog who check and fix.

/system routerboard modem set sim-slot=up <- this activate sim1 and deactivate sim2
/system routerboard modem set sim-slot=down <- this activate sim2 because this is the last one
This works in this way ?

Please confirm the command works in this way or not

# ? You must correct this: /local rsrp-lte1 [/interface lte get lte1 rsrp]; ?

You found a proper CLI to display via put the rsrp value ?

Thanks，however use the rssi or rsrp,the script can't switch the
Sim.

This was example, not solution. You must do checking because I have not any MikroTik LTE device and cannot check results of command.

# ? You must correct this: /local rsrp-lte1 [/interface lte get lte1 rsrp]; ?

You found a proper CLI to display via put the rsrp value ?

Thanks，however use the rssi or rsrp,the script can't switch the
Sim.

This was example, not solution. You must do checking because I have not any MikroTik LTE device and cannot check results of command.
I can do remote session to check this and then I will be have all stuff to rewrite main script but you must cooperate too.

Next,
I read https://wiki.mikrotik.com/wiki/Manual:Interface/LTE and https://wiki.mikrotik.com/wiki/Dual_SIM_Application

On some LTE MikroTik devices can be set specific LTE Band via AT command. This is important because you can select this who have a best speed in your region.
put [/interface lte get lte1 band ]
put [/interface lte get lte1 running ]
You can have both lte1 and lte2 running at the same time and select via script the MultiWan policy from just FialOver to many method to do it.

Easy way to reach "The LTAP can switch the Dual SIM when the RSSI was weakness?" is by:

Code: Select all

# ? You must correct this: /local rsrp-lte1 [/interface lte get lte1 rsrp]; ?
local rsrp-lte1_v1 "-87dBm";
local rsrp-lte1_v2 [/pick $rsrp-lte1_v1 0 [/find $rsrp-lte1_v1 dBm]];
/if ($rsrp-lte1_v2 > -102) do={put "Disable weak lte1 "};

Better is change route and have possibility to check and wait until rsrp cameback to good signal.

Base on


because I cannot do it at my RB ROS:
Screenshot_1.jpg
try do and print the same results like upper example all prints you have (I don't do it bcs I not have this hardware ! and I not have a remote access to your PC to check all diagnostic parameter's fast ).

Please provide results of:

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put [/interface lte info lte1 once as-value]
put ([/interface lte info lte1 once as-value]->"rsrp")

Please confirm that every running this code will change a sim-slot to other one

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if ([/system routerboard modem get sim-slot]="up") do={/system routerboard modem set sim-slot=down} else={/system routerboard modem set sim-slot=up};

I write you before in 1st answer that I use USB LTE but not as modem but as router and I HAVENT GOT the INFO property!.
Screenshot_4.jpg

GIVE ME THIS RESULTS:

Code: Select all

put [/interface lte info lte1 once as-value]
put ([/interface lte info lte1 once as-value]->"rsrp")

I must give you instruction how to do it?

Perfect, VERY THANKS, TEXT FORM is the best to me. I can just copy-paste.
Next post should be with a beta-script who will be to testing.
Please, copy to CLI this script=code from viewtopic.php?f=9&t=151036#p747253 and check yourself the LED and printing.

Picture:
Screenshot_5.jpg

check this, only display in terminal, the /led settings are from other post:

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{

local RsrpLte1 ([/interface lte info lte1 once as-value]->"rsrp");
put $RsrpLte1; # Now it is "-87" without dBm word
:if ($RsrpLte1 >= -80) do={
  #/system leds set 1 leds=led1,led2,led3,led4,led5 type=on
  put "5 Led *****";
  } else={
  :if (($RsrpLte1 <= -81) && ($RsrpLte1 >= -90)) do={
    #/system leds set 1 leds=led1,led2,led3,led4 type=on
    put "4 Led ****";
    } else={
    :if (($RsrpLte1 <= -91) && ($RsrpLte1 >= -100)) do={
      #/system leds set 1 leds=led1,led2,led3 type=on
      put "3 Led ***";
      } else={
      :if (($RsrpLte1 <= -101) && ($RsrpLte1 >= -110)) do={
        #/system leds set 1 leds=led1,led2 type=on
        put "2 Led **";
        } else={
        :if (($RsrpLte1 <= -111) && ($RsrpLte1 >= -120)) do={
          #/system leds set 1 leds=led1 type=on
          put "1 Led *"
          } else={
          #/system leds set 1 leds=led1,led2,led3,led4,led5 type=off;
          put "- Led";
        }
      }
    }
  }
}

}

Please confirm that every running this code will change a sim-slot to other one

Code: Select all

if ([/system routerboard modem get sim-slot]="up") do={/system routerboard modem set sim-slot=down} else={/system routerboard modem set sim-slot=up};

ok, I understand this but I not use the LED property, never. For me it's not any usage in it. This is common part in scripting for you and for @krafg .
Currenty I work now in my main job. Additional try help with your and @krafg sctipts.

About the ltap1.rsc is like 85% progress. Just few stuff.
You still not give me feedback about this:

Please confirm that every running this code will change a sim-slot to other one

Code: Select all

if ([/system routerboard modem get sim-slot]="up") do={/system routerboard modem set sim-slot=down} else={/system routerboard modem set sim-slot=up};

by the way,the script from "https://wiki.mikrotik.com/wiki/Dual_SIM_Application"was working on my LTAP when I change something,Thanks for your help!

{
# TODO: run only if uptime is bigger then x minutes
# TODO: do switch lte-slot base on history last few value rsrp
:global timeoutLTE 60
:global timeoutConnect 60

# Wait for LTE to initialize for maximum "timeoutLTE" seconds
:global LteInitTime 0;
:local i 0
:local LteDetected false
:local result false
:while ($i<$timeoutLTE) do={
  :set $i ($i+1)
  :set $LteInitTime $i;
  :foreach n in=[/interface lte find ] do={
    # Disable LTE interface means the same like plug-in and initialized but not running.
    :set $LteDetected true;
    :set $i $timeoutLTE
    }
  :delay 1s
} 
:if ($LteDetected=true) do={set $result "GOOD"} else={set $result "FAIL"};
:log info ("LTE initialize in ".$LteInitTime." seconds with ".$result);

# Check if LTE is initialized, or try power-reset the modem
:if ($LteDetected=true) do={
  # Wait for LTE interface to connect to mobile network for maximum "timeoutConnet" seconds
  :local isConnected false
  :set $i 0
  :while ($i<$timeoutConnect) do={
      :if ([/interface lte get [find name="lte1"] running]=true) do={
          :set $isConnected true
          :set $i $timeoutConnect
      }
      :set $i ($i+1)
      :delay 1s
  }
  
  # Change the LTE Slot when the RSRP is to bad.
  if ($isConnected=true) do={
    :local InfoRsrp ([/interface lte info [find name="lte1"] once as-value]->"rsrp")
    :if ($InfoRsrp >= -103) do={
      :log info "LTE modem is switch to other sim slot."
      :if ([/system routerboard modem get sim-slot]="up") do={/system routerboard modem set sim-slot=down} else={/system routerboard modem set sim-slot=up};
    }
  }
} else={
  :log info ("LTE modem did not appear in ".$LteInitTime."s, trying power-reset")
  /system routerboard usb power-reset duration=5s
}
}

by the way,the script from "https://wiki.mikrotik.com/wiki/Dual_SIM_Application"was working on my LTAP when I change something,Thanks for your help!

Wiki script not check rsrp and have other purpose.

Main JOB is to switch sim-slot when the ($InfoRsrp >= -103) is true.
Release Candidate version:

Code: Select all

{
# TODO: run only if uptime is bigger then x minutes
# TODO: do switch lte-slot base on history last few value rsrp
:global timeoutLTE 60
:global timeoutConnect 60

# Wait for LTE to initialize for maximum "timeoutLTE" seconds
:global LteInitTime 0;
:local i 0
:local LteDetected false
:local result false
:while ($i<$timeoutLTE) do={
  :set $i ($i+1)
  :set $LteInitTime $i;
  :foreach n in=[/interface lte find ] do={
    # Disable LTE interface means the same like plug-in and initialized but not running.
    :set $LteDetected true;
    :set $i $timeoutLTE
    }
  :delay 1s
} 
:if ($LteDetected=true) do={set $result "GOOD"} else={set $result "FAIL"};
:log info ("LTE initialize in ".$LteInitTime." seconds with ".$result);

# Check if LTE is initialized, or try power-reset the modem
:if ($LteDetected=true) do={
  # Wait for LTE interface to connect to mobile network for maximum "timeoutConnet" seconds
  :local isConnected false
  :set $i 0
  :while ($i<$timeoutConnect) do={
      :if ([/interface lte get [find name="lte1"] running]=true) do={
          :set $isConnected true
          :set $i $timeoutConnect
      }
      :set $i ($i+1)
      :delay 1s
  }
  
  # Change the LTE Slot when the RSRP is to bad.
  if ($isConnected=true) do={
    :local InfoRsrp ([/interface lte info [find name="lte1"] once as-value]->"rsrp")
    :if ($InfoRsrp >= -103) do={
      :log info "LTE modem is switch to other sim slot."
      :if ([/system routerboard modem get sim-slot]="up") do={/system routerboard modem set sim-slot=down} else={/system routerboard modem set sim-slot=up};
    }
  }
} else={
  :log info ("LTE modem did not appear in ".$LteInitTime."s, trying power-reset")
  /system routerboard usb power-reset duration=5s
}
}

I don't know which is better between your script and my modified.

By the way,do you know APRS? I have a idea , send the /system/GPS info to the APRS network

For this,in my local, the ISP says the rsrp <105dBm was bad, for test easy

I set it's like that;and in car use, not usually to execute the script to switch the sim, because switch sim need more than 30 seconds and maybe the rsrp was good in a short time

# Check if LTE is connected
if ($isConnected=true) do={
    :local Info [/interface lte info [find name="lte1"] once as-value]
    :local isRsrp ($Info->"rsrp")
    :local isRssi ($Info->"rssi")
    :log info message="$Info"
    # Check which SIM slot is used
    :if ($simSlot="up") do={
        # If "up" (UNICOM) slot, check Rsrp or Rssi
        :if ($isRsrp<-105 | $isRssi<-110) do={
            :log info message="Rsrp less than -105dBm, switching to SIM DOWN (CM)"
            :system routerboard modem set sim-slot=down
        }
    } else={
        # Else "down" (CM) slot, check Rsrp or Rssi
        :if (!$isRsrp<-101 | $isRssi<-110) do={
            :log info message="Rsrp less than -101dBm, switching to SIM UP (UNICOM)"
            :system routerboard modem set sim-slot=up
        }
    }
} else={
    :log info message="LTE interface did not connect to network, wait for next scheduler"
    :if ($simSlot="down") do={
        :log info message="DOWN slot No sim Switch simslot to Sim UP"
        :system routerboard modem set sim-slot=up
       } else={
        :log info message="UP slot No sim Switch simslot to Sim DOWN"
        :system routerboard modem set sim-slot=down
       }
}

  # Change the LTE Slot when the RSRP or RSSI is to too bad.
  if ($isConnected=true) do={
    :local isRsrp ([/interface lte info [find name="lte1"] once as-value]->"rsrp")
    :local isRssi ([/interface lte info [find name="lte1"] once as-value]->"rssi")
    :if ($isRsrp<-105 | $isRssi<-110) do={
      :log info "LTE modem is switch to other sim slot."
      :if ([/system routerboard modem get sim-slot]="up") do={/system routerboard modem set sim-slot=down} else={/system routerboard modem set sim-slot=up};
    }
  }
} else={
  :log info ("LTE modem did not appear in ".$LteInitTime."s, trying power-reset")
  /system routerboard usb power-reset duration=5s
}

put [/interface lte get lte1 band]

put [/system gps monitor once as-value];
put ([/system gps monitor once as-value]->"speed");

put [system routerboard get model ]

By the way,do you know APRS? I have a idea , send the /system/GPS info to the APRS network

It`s don`t change sim-slot in madness frequency,the script was execute by Scheduler，usually set the Scheduler execute the script more the 90 seconds

I think monitor/average/latency have a problem that maybe when change the sim-slot,the RSRP/RSSi maybe bad which the sim-slot change to,like the script change the sim-slot when the RSRP/RSSI was bad at once

system scheduler set NameOfScheduler start-time=([/system clock get time]+1m)

,so I think the monitor...etc function not necessary at now

t`s for maybe the one of sim-slot have no sim before LTE run

"get band............"can`t get anything,maybe my LTE module don`t support this function,and Cell-Monitor like this

It`s don`t change sim-slot in madness frequency,the script was execute by Scheduler，usually set the Scheduler execute the script more the 90 seconds

I think monitor/average/latency have a problem that maybe when change the sim-slot,the RSRP/RSSi maybe bad which the sim-slot change to,like the script change the sim-slot when the RSRP/RSSI was bad at once

system scheduler set NameOfScheduler start-time=([/system clock get time]+1m)

,so I think the monitor...etc function not necessary at now

t`s for maybe the one of sim-slot have no sim before LTE run

"get band............"can`t get anything,maybe my LTE module don`t support this function,and Cell-Monitor like this

I found the YT clip with show the full settings with band. Mikrotik SXT LTE v2 Dual SIM & Band Select

Quectel_EC20_AT_Commands_Manual
and manual at-chat
4.3.6. AT+QCFG="band" Band Configuration
6.9. AT+QNWINFO Query Network Information

Just say.

This is offtopic with band.
This is easy as reason why to lock into band. If you not live in city then you have some distance to tower. Slow quality of signal like 0/5 or 1/5 from progress bar.
In this situation you discover that 800/900 band is slower but works better at distance like in my scenario.

On most modems the selective LTE or 3G or LTE>3G is max of selection. When you can select band then you discover properly speed per each band and you can choose a proper.
My situation as offtipic is described in viewtopic.php?f=9&t=151036#p747828 and this is good example why use Band and be aweare or them.

My college in city say, same times internet is extreme speed like 90/40Mb and some times 13/3 but he have the "LTE only". I write him a custom firmware to his Huawei USB LTE modem and we choose and save only one band at LTE. Now he always have very speed. Without any external antenna.