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AmirFarro
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Internet connection drops for 4-3 second every few moment

Tue Feb 09, 2021 5:27 pm

Sorry for my english.
My radio wireless is LHG 5 and ISP radio is QRT 5. The connection is PTMP, there is 3 other clients connected to that QRT 5. There is a weird problem that happens every few moment and it's so annoying for me. every few moment( 2 minute - 10 minute) I get a complete disconnection for 3-4 second and it's so annoying because it interrupts every kind of task (Voice Call, Online Game, University online course, live stream or video, Streaming by myself). I called ISP many times to solve this problem, they did everything they can to solve it but they couldn't succeed. Also we checked everything together (Me and ISP support) but we couldn't understand what is the reason of this problem. The 3 other client are industries and they get closed after 15 PM, so after that time I'm the only user who uses the internet and other 3 client device stay as idle mode (They just stay online and don't use any internet). So ISP asked me to research about it. They are ready to set any configuration I say to solve this problem because they have no idea what's the reason of this. Thus I decided to ask you for help, I can provide any detail you want to solve this problem.
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AmirFarro
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Re: Internet connection drops for 4-3 second every few moment

Tue Mar 16, 2021 8:42 am

Bump!
 
quackyo
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Re: Internet connection drops for 4-3 second every few moment

Tue Mar 16, 2021 4:04 pm

The engine in my car don't work. Here's a picture of my seat. please help...
 
sindy
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Re: Internet connection drops for 4-3 second every few moment

Tue Mar 16, 2021 10:30 pm

A more friendly advice: post the export of both configurations (hAP lite and LHG5), and you'll likely get some instruction on what and where to sniff while testing to help identify the problem.

Before starting, install the latest long-term version (6.47.9 at the moment of writing this) on both devices - debugging this kind of issue on a beta version is a waste of time. I'm not sure, though, whether a downgrade from 7.x to 6.x is possible without loss of configuration, you may have to configure the routers from scratch.
Instead of writing novels, post /export hide-sensitive. Use find&replace in your favourite text editor to systematically replace all occurrences of each public IP address potentially identifying you by a distinctive pattern such as my.public.ip.1.
 
AmirFarro
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Re: Internet connection drops for 4-3 second every few moment

Thu Apr 22, 2021 2:01 pm

These are the settings of my LHG5.
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sindy
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Re: Internet connection drops for 4-3 second every few moment

Thu Apr 22, 2021 2:14 pm

Instead of posting 150 screenshots which show 5 % of the configuration, please use the [New Terminal] button to open a command line window, type /export hide-sensitive file=current-config in that window and press Enter. A file named current-config.rsc will appear in the file list; download it, and if you eventually have a public IP address, substitute it in the file following the hint in my automatic signature. Then either attach the file here as an attachment to the post, or copy-paste the contents into the body of the post between [code] and [/code] tags.
Instead of writing novels, post /export hide-sensitive. Use find&replace in your favourite text editor to systematically replace all occurrences of each public IP address potentially identifying you by a distinctive pattern such as my.public.ip.1.
 
AmirFarro
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Re: Internet connection drops for 4-3 second every few moment

Thu Apr 22, 2021 2:22 pm

I don't have permission for that.
 
sindy
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Re: Internet connection drops for 4-3 second every few moment

Thu Apr 22, 2021 2:32 pm

In such case, ask the ISP for that, as it is apparently their device.

Just as a blind shot until you can arrange that, press [Interfaces], and in the "Interface List" window that opens, press the [Detect Internet] button just above the table on the (Interface) tab. Post the screenshot of the window that opens.
Instead of writing novels, post /export hide-sensitive. Use find&replace in your favourite text editor to systematically replace all occurrences of each public IP address potentially identifying you by a distinctive pattern such as my.public.ip.1.
 
AmirFarro
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Re: Internet connection drops for 4-3 second every few moment

Thu Apr 22, 2021 2:54 pm

I can't have access straightly to wireless device, so I have to disable Internet first. I wonder that can I have access to my LHG 5 through my hAP Lite with online internet?
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sindy
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Re: Internet connection drops for 4-3 second every few moment

Thu Apr 22, 2021 3:34 pm

It is hard to say as I don't know the complete setup. The LHG5 may be working in bridge mode an have no IP address, or there may be a management IP address assigned by the ISP. When you connect your PC to the hAP lite, you can see only the hAP lite in the neighbour list in Winbox because the hAP lite acts as a router and thus the LAN and WAN are not the same L2 segment, so the discovery protocols cannot traverse between LAN and WAN.

If the LHG5 has an IP address, and if there are no firewall rules (on the hAP lite or on the LHG5 itself) that would prevent access to that address from your PC, you should be able to connect to the LHG5 even when the hAP lite is connected to it by telling Winbox to connect to that IP address rather than to the MAC address of the LHG5.

To find out, on LHG5, go IP->Addresses and post the window that pops up (if the IP address is a public one, hide it in the picture).

Then, go IP->Routes and post that window.

Next, go IP->Firewall and post that window when the tab (Filter Rules) is chosen.

And post the text export of your hAP lite, I suppose that device is your own one so you can do the export on it?

BTW, you've excused for your English, but I can understand what you write just fine. Do you have any issue with what I write?
Instead of writing novels, post /export hide-sensitive. Use find&replace in your favourite text editor to systematically replace all occurrences of each public IP address potentially identifying you by a distinctive pattern such as my.public.ip.1.
 
AmirFarro
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Re: Internet connection drops for 4-3 second every few moment

Thu Apr 22, 2021 3:52 pm

I totally understand what you write. I excused because I may make some grammar mistakes because I'm not native English. So I want you to don't take these seriously.
I can also give you AnyDesk address to check everything needed.
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Last edited by AmirFarro on Thu Apr 22, 2021 4:39 pm, edited 1 time in total.
 
sindy
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Re: Internet connection drops for 4-3 second every few moment

Thu Apr 22, 2021 4:31 pm

You may want to remove the script part from the configuration export (edit the post, remove the file and re-post it without the /system script and all the lines following it) and change your password to the DynDNS service. It didn't come to my mind you could have something like that in operation. I'll continue regarding the original topic later.
Instead of writing novels, post /export hide-sensitive. Use find&replace in your favourite text editor to systematically replace all occurrences of each public IP address potentially identifying you by a distinctive pattern such as my.public.ip.1.
 
AmirFarro
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Re: Internet connection drops for 4-3 second every few moment

Thu Apr 22, 2021 4:41 pm

Which password should I change? I already removed Scripts line in this config file.
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sindy
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Re: Internet connection drops for 4-3 second every few moment

Thu Apr 22, 2021 5:09 pm

There is the local noippass "xxxxx" line in the script; if someone has downloaded the original file, they can update your DynDNS now, until you change the password on the DynDNS web selfcare page and then update it accordingly in your script.

To the original topic: given how the two Mikrotik devices are configured, I doubt the ISP network allows the customers to access the LHG5 using its IP address. The PPPoE connection from your hAP lite is terminated on some of their central routers and there is probably a firewall rule or a missing route to prevent customers from accessing the subnets the ISP uses to manage their delivery network. And you cannot configure an IP address from that subnet on ether1 of the hAP lite because the subnet is really small so you could get in conflict with some other customer (since there are 4 customers in total, there's a single free address in that /29).

So it may be possible to use mac-telnet to access the LHG5 from the hAP lite, using the same credentials you use for Winbox access ([Tools]->[Telnet]->(o) Mac Telnet and enter the MAC address of the LHG5).

It should also be possible to make ether1 of the hAP lite a member port of the LAN bridge, attach pppoe-out1 to the bridge interface rather than to ether1, and use bridge filter rules to allow only pppoe, pppoe-discovery, and mac-winbox frames to leave through ether1, in order to prevent messing with the rest of the ISP network, but it's quite a complex task which may not be worth it.

They could also assign a secondary IP address to the LGH5, from another subnet, and you would assign another IP address from that subnet to ether1 of your hAP lite.

No matter how you eventually get there while the hAP lite is connected, the thing is that I'd like to see the log of the wireless subsystem while the outages happen, but as your account on the LHG5 doesn't have enough permissions to export the configuration, I doubt you could change the logging settings.

As your initial screenshots show that you ping the MAC address of the AP from the LHG5 itself, it should not be a cabling issue, except if a powering one. Do you know how long is the Ethernet cable from the PoE injector to the LHG5, and what is the voltage of the power supply used to feed it?

If I were your ISP, and if the log of the wireless subsystem shows nothing at either end (the AP and your LHG5), I would use another LHG5. First to replace yours, and if it doesn't help, to do wireless sniffing while you ping the AP from the LHG5 and the outages happen. I'd first be sniffing at the AP side, looking whether all the ping requests arrive over the air, and if they do, then at your end, to see whether the responses come over the air.
Instead of writing novels, post /export hide-sensitive. Use find&replace in your favourite text editor to systematically replace all occurrences of each public IP address potentially identifying you by a distinctive pattern such as my.public.ip.1.
 
AmirFarro
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Re: Internet connection drops for 4-3 second every few moment

Thu Apr 22, 2021 6:05 pm

I will change my DynDNS service password to make it secure ASAP. I can make temporary LAN connection by disabling interface "pppoeout-out1" and then adding ether1 port to LAN_Bridge. I also tried MAC-telnet and it worked, but as it connected through terminal, I didn't like it XD. For now, it's not a big deal so we can skip solving this problem. Back to original topic, the only situation that I don't get timeout and the problem gets solve, is by disabling other clients on ISP radio device. So they suggest me to buy one more radio and make a PTP connection, but it cost a lot of price, I believe the problem is solvable so it's not worth to pay that much money for that, however, it's an option. about cable and voltage, the cable length is 25 meter and voltage is 220-240, but as I said the problem is not related to cable or device it self. They say they already send a ticket to Mikrotik support team with needed config files, and they already did every suggestion that support team suggested but those didn't work.
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sindy
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Re: Internet connection drops for 4-3 second every few moment

Thu Apr 22, 2021 6:38 pm

the only situation that I don't get timeout and the problem gets solve, is by disabling other clients on ISP radio device. So they suggest me to buy one more radio and make a PTP connection, but it cost a lot of price, I believe the problem is solvable so it's not worth to pay that much money for that, however, it's an option.
That's the issue of the price of one's time. In some countries, the price of LHG5 equals to one hour of technician's work, in others it may equal to one month of technician's work.

But more important is that running another radio in parallel to an existing one is in a better case a useless occupation of an extra radio channel, and in a worse case it is an extra interference source if no unused channels are available in the air.

about cable and voltage, the cable length is 25 meter and voltage is 220-240
The voltage you gave is the AC one at the wall outlet, but there's an adaptor which makes 24 or alike DC from it, and this is what I was interested in.
But if you use the adaptor that came bundled with the LHG5, it should be fine with just 25 meters of Ethernet cable, unless the cable is very bad. And as you say that disabling the other clients cures the problem, it's definitely not related.

They say they already send a ticket to Mikrotik support team with needed config files, and they already did every suggestion that support team suggested but those didn't work.
Have you/they tried to change the MAC address of your LHG 5?

I don't know whether they really need to use NV2 given that there are only four clients on the sector - the issue may be specific to NV2 and not exist in 802.11 mode. Have they tried to switch all the clients and the AP to 802.11?
Instead of writing novels, post /export hide-sensitive. Use find&replace in your favourite text editor to systematically replace all occurrences of each public IP address potentially identifying you by a distinctive pattern such as my.public.ip.1.
 
AmirFarro
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Re: Internet connection drops for 4-3 second every few moment

Thu Apr 22, 2021 6:57 pm

The price is about 1 month of my brother income, So it's a lot. The cable is high quality one with few layer inside. They already have connected me to another radio but problem still exist, we also tested both protocol, 802.11 and nv2, on both of ISP radios, but it didn't change anything. The solution that is mentioned before, also worked on the new destination radio(Disabling other clients). About changing MAC, they(ISP) said that they already had this problem with one of their customers and problem fixed by changing connection into PTP, So it means even changing MAC may not solve the problem. I wonder that if it related to Mikrotik devices, and the bad news is the Mikrotik is only brand which is accepted by my country ISPs.
 
sindy
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Re: Internet connection drops for 4-3 second every few moment

Thu Apr 22, 2021 7:32 pm

The price is about 1 month of my brother income, So it's a lot.
...
the bad news is the Mikrotik is only brand which is accepted by my country ISPs.
Which seems to be related, other vendors may be prohibitively expensive or embargoed. And they don't support NV2 of course.

They already have connected me to another radio but problem still exist, we also tested both protocol, 802.11 and nv2, on both of ISP radios, but it didn't change anything. The solution that is mentioned before, also worked on the new destination radio(Disabling other clients). About changing MAC, they(ISP) said that they already had this problem with one of their customers and problem fixed by changing connection into PTP, So it means even changing MAC may not solve the problem.
If replacement of the whole device hasn't helped, it seems logical that replacing a MAC address will not help either.

The way you describe it, it sounds as an issue with the wireless protocol where some of the other clients on the same AP is sending when it is not supposed to, interfering with the signal from your LHG5, or the AP not allowing your STA to send for quite a long period of time. This is something that can only be debugged the way I've described before, i.e. using a third radio to passively listen to the wireless traffic and then analysing the captured communication, and it needs an experienced WiFi specialist to find the issue and identify the guilty piece of equipment.

I am afraid no tools capable of analysing NV2 traffic exist outside Mikrotik's lab, so such an analysis can only be done when the whole cell runs 802.11.

What surprises me most is that those other clients (companies) connected to the same AP don't complain, as this issue should affect every client on the same AP, not just a single one. Do they use LHG5 as well? Can the ISP eventually switch them off temporarily in the afternoon one by one (which can be done remotely using the delay command), to possibly identify a single client device that misbehaves?
Instead of writing novels, post /export hide-sensitive. Use find&replace in your favourite text editor to systematically replace all occurrences of each public IP address potentially identifying you by a distinctive pattern such as my.public.ip.1.
 
AmirFarro
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Re: Internet connection drops for 4-3 second every few moment

Thu Apr 22, 2021 8:30 pm

ISP said even other clients have the problem, but they aren't using like you(They are one shop and three company) so they don't mind this kind of issues. We also tried to switching them off and enabling them one by one, but it doesn't related to specific device, the problem always happen when there is more than one radio connected to ISP radio. Also we've already been using 802.11 protocol for a 2-3 month now. Also devices are different from each other, but ISP radios all are QRT 5.
 
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Re: Internet connection drops for 4-3 second every few moment

Thu May 06, 2021 4:42 pm

Bump!
 
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Re: Internet connection drops for 4-3 second every few moment

Fri May 07, 2021 12:20 am

I do not understand because you are taking care of it,
who you do not even have all the permissions to read access and modify the configuration of the devices,
rather than requiring your ISP to take care of it.

This situation is absurd for me and, only for me of course, the hypothesis is that the ISP is nothing more than a guy who, without authorization, gives the connection "without putting much effort"...
I'm Italian, not English. Sorry for my imperfect grammar.
 
AmirFarro
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Re: Internet connection drops for 4-3 second every few moment

Fri May 07, 2021 12:57 am

I do not understand because you are taking care of it,
who you do not even have all the permissions to read access and modify the configuration of the devices,
rather than requiring your ISP to take care of it.

This situation is absurd for me and, only for me of course, the hypothesis is that the ISP is nothing more than a guy who, without authorization, gives the connection "without putting much effort"...
ISP says because your connection is PTMP, we can't put on risk our security and give permissions to you, there is 3 other clients connected to destination radio. they say if I was PTP, they could give radios permission. ISP already made a ticket with Supout.files attached to it. Support team couldn't solve the problem yet. My situation is something like this:
viewtopic.php?f=7&t=174762&p=855891#p855891
 
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Re: Internet connection drops for 4-3 second every few moment

Fri May 07, 2021 1:07 am

The engine in my car don't work. Here's a picture of my seat. please help...

Without full export (EXPORT, not PHOTOS) of QRT5 and the LHG5 (hoping all LHG5 have same config) can't be done anything.

Very useless "bump"

Change ISP and ask for refund.

P.S.:
What is distance between the other 3 LHG5 and QRT5?
-35 at 2Km...
the right value at that distance is calibrate all between -52 and -60, depend on other users distance.

For 2Km one QRT and one LHG...
No comment...
I'm Italian, not English. Sorry for my imperfect grammar.

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