Posted: 12/8/2015 9:18:42 AM EDT
I have been using for a year now, a 4G connection for my home internet usage (best solution available)
  
until recently, I was using the mobile modem/router provided by my phone company. You'd put the simcard in, and connect to it via wifi to access the internet. it had a DHCP function allowing you to connect up to 10 devices through WIFI. additionnal devices required manually setting up their IPs etc. But I wasnt satisfied because it didnt have any physical network ports (RJ45) and the solution I used (using a wifi extender which had LAN ports, to connect to the mobile modem/router) wasnt practical. So I bought a Dlink DWR-921 which is a modem router in which you can insert your simcard, that will allow you to have both a physical and wifi network. and it works. I configured it so that its IP is 192.168.0.2 and with a DHCP field from (192.168.0.)101 to 199. Manually entered IPs from (192.168.0.) 50 to 99 (you can notice that my ISP doesnt give me a real public IP, so I can't forward ports yet, but thats another issue) (the airport extreme just provide a secondary wifi network, but the problem im gonna describe remains even when completely pluggin that off) 
everything works fine, until it doesnt. let me explain you the problem : at a certain point, I don't have internet access anymore... but not completely. The programs or apps I was currently using keep working and accessing the internet (like, if im browsing arfcom on my ipad and safari, that keeps working) but if I open another browser, it wont work. likewise, if I turn my computer on, it wont access the internet either. Other symptom, I am unable to access the main administrative page of my modem/router through its IP (192.168.0.2) , even from the already open browsers that keep accessing the internet. The lights on the modem/router panel indicates that it is still working and connected to the 4G. the only way to fix this is to manually reboot the modem router. I have tried updating the firmware to the latest version available, but the problem remains. It happens once a day approximatively, but not at the same hour.. kinda randomly (or I havent identified a pattern) anybody has an idea of what is going on ?` thanks a lot for your help ! |
| I had a similar issue with a Dlink router. I ended up replacing the router. I don't remember the model number but it was one that looked like a black cylinder. I reset to factory defaults and updated firmware as well and got no better results. I ended up having to reboot it multiple times a day. |
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Reset router back to factory settings. Go back through upgrading the firmware first. Then configure the network. Get it to connect to the internet. Dont do any customization other than getting it to connect. Configure it on the base 192.168.1.1. Do not change the IP.
Something in the router is hosing the entire thing. Could be as simple as the processor board having a glitch or malfunction. Resetting back to factory gets rid of the user error part. If it stays connected over a few day period. Then it is something you are doing while customizing the IP etc.... |
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I had a similar issue with a Dlink router. I ended up replacing the router. I don't remember the model number but it was one that looked like a black cylinder. I reset to factory defaults and updated firmware as well and got no better results. I ended up having to reboot it multiple times a day. The quickest way to troubleshoot this is replace the dlink and test. It sounds like the dlink is the problem. These routers are hit or miss and when they start to fail there is no fixing them. |
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Just a guess, but the state table is full , or you are running out of ports to use for NAT .
Correct way to do this is to bridge over to the 4G AP . You should be getting your IP from it, not another router. I am not sure if that D-link supports it , but look for a "bridge" (IP network engineer since 1996) |
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Quoted: Just a guess, but the state table is full , or you are running out of ports to use for NAT . Correct way to do this is to bridge over to the 4G AP . You should be getting your IP from it, not another router. I am not sure if that D-link supports it , but look for a "bridge" (IP network engineer since 1996) But I didnt want to get too technical and confuse the OP I work in a place that requires me to dumb PC/network stuff down. I have to make sure I re-calibrate when going to a class or conference. Otherwise I look like an idiot.  |
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Just a guess, but the state table is full , or you are running out of ports to use for NAT . Correct way to do this is to bridge over to the 4G AP . You should be getting your IP from it, not another router. I am not sure if that D-link supports it , but look for a "bridge" (IP network engineer since 1996) Ok.. this sounds a bit out of my skillset... I've browsed through the setup menus, and I see nothing corresponding to a bridge, unfortunately. |
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Ok.. this sounds a bit out of my skillset... I've browsed through the setup menus, and I see nothing corresponding to a bridge, unfortunately. Quoted:
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Just a guess, but the state table is full , or you are running out of ports to use for NAT . Correct way to do this is to bridge over to the 4G AP . You should be getting your IP from it, not another router. I am not sure if that D-link supports it , but look for a "bridge" (IP network engineer since 1996) Ok.. this sounds a bit out of my skillset... I've browsed through the setup menus, and I see nothing corresponding to a bridge, unfortunately. Under 3G/4G Internet Connection Type settings, there should be an option for "transparent bridge". Doing what he says may not work though. A lot of ISPs either won't let you lease more than one address from the DHCP at their access point, or they will have security in place that will break any home networking stuff you run, otherwise you would have access to all the devices for their other customers that are bridged to that AP (I have customers that ask me to put our modem in transparent bridge when they have their router set the same, and then get upset when they find out I filter SMB). A better idea would be to setup your DLINK in transparent bridge mode, turn off its DHCP and wifi, wire your airport to its LAN port, and configure your airport to act as your router and wifi AP. |
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Just a guess, but the state table is full , or you are running out of ports to use for NAT . Correct way to do this is to bridge over to the 4G AP . You should be getting your IP from it, not another router. I am not sure if that D-link supports it , but look for a "bridge" (IP network engineer since 1996) anything else I can do about this ? edit: just saw the previous post |
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Under 3G/4G Internet Connection Type settings, there should be an option for "transparent bridge". Doing what he says may not work though. A lot of ISPs either won't let you lease more than one address from the DHCP at their access point, or they will have security in place that will break any home networking stuff you run, otherwise you would have access to all the devices for their other customers that are bridged to that AP (I have customers that ask me to put our modem in transparent bridge when they have their router set the same, and then get upset when they find out I filter SMB). A better idea would be to setup your DLINK in transparent bridge mode, turn off its DHCP and wifi, wire your airport to its LAN port, and configure your airport to act as your router and wifi AP. Quoted:
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Just a guess, but the state table is full , or you are running out of ports to use for NAT . Correct way to do this is to bridge over to the 4G AP . You should be getting your IP from it, not another router. I am not sure if that D-link supports it , but look for a "bridge" (IP network engineer since 1996) Ok.. this sounds a bit out of my skillset... I've browsed through the setup menus, and I see nothing corresponding to a bridge, unfortunately. Under 3G/4G Internet Connection Type settings, there should be an option for "transparent bridge". Doing what he says may not work though. A lot of ISPs either won't let you lease more than one address from the DHCP at their access point, or they will have security in place that will break any home networking stuff you run, otherwise you would have access to all the devices for their other customers that are bridged to that AP (I have customers that ask me to put our modem in transparent bridge when they have their router set the same, and then get upset when they find out I filter SMB). A better idea would be to setup your DLINK in transparent bridge mode, turn off its DHCP and wifi, wire your airport to its LAN port, and configure your airport to act as your router and wifi AP. that I can do for sure but its the red part that I am unsure of 
What should I do exactly ? (sorry, i am network noob) |
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Check that box that says "Transparent Bridge." FYI: I tried that with my Dlink (to my DSL modem) and it worked better, but still not solid. ok, i've done that but then I had no way to connect to the internet..(even setting my windows 7 PC in automatic IP fields) i noticed my airport got given the same kind of private IP from the ISP but i couldnt connect to that either.. 
but maybe I needed to completely reconfigure my airport as a router as advised, with its own DHCP, and physically connect my PC directly to the airport.. damn, I think I understand what needs to be done.... but my question is.. what about those IP fields at my ISP ? can I still have a home network with its 192.168.0.xxx fields ? |
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You probably need to notify your ISP that you have a new router and might have to give them the MAC address so they will allow it access. It should have a public IP then. Quoted:
You probably need to notify your ISP that you have a new router and might have to give them the MAC address so they will allow it access. It should have a public IP then. apparently, they won't do that : https://community.salt.ch/en/question/12094/is-it-possible-to-obtain-a-public-ip-on-salts-3g4g-network/ https://community.salt.ch/en/question/14638/public-ip-and-port-forwarding-for-a-4g-router/?answer=19415#post-id-19415 Hi Landros,
Thanks for your post on the Community. We’re pleased to hear that you’re successfully connecting to our 4G (LTE) network. Currently it’s not possible to perform inbound server-like connections for several reasons: Within Salt’s mobile network, all subscribers are granted a Private IP address (internal to Salt’s network) which goes out to the Internet via a NAT protocol while using a certain amount of public IP addresses. In other words, many subscribers are hidden behind the same public IP. This set up prevent any server-based system to be hosted behind a mobile Internet network. It helps us to grant all Salt’s customers a larger bandwidth on a single site while sustaining a seamless traffic flow. As for the M2M set-up environment, things might be different. I'll get back to you once I've got all the elements of answers. Thank you. Marc - See more at: https://community.salt.ch/en/question/12094/is-it-possible-to-obtain-a-public-ip-on-salts-3g4g-network/#sthash.DLMD0VTq.dpuf |
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When the issue happens, have you tried to ping: - your gateway (aka your router) - another device on your network - 8.8.8.8 If so, what are the results? nope, i havent. I doubt it would work though. As I have explained in my OP, when the problem happens, I am unable to access my router via its own local IP (192.168.0.2) when it should actually work. |
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Just a guess, but the state table is full , or you are running out of ports to use for NAT . Correct way to do this is to bridge over to the 4G AP . You should be getting your IP from it, not another router. I am not sure if that D-link supports it , but look for a "bridge" (IP network engineer since 1996) That was my first guess. The other thing I was guessing was some kind of DHCP conflict. As others have said, make sure only the first box is running DHCP. |
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I would look into changing ISPs. not an option. only ISP providing illimted 4G in my neck of the woods. no better solution in term of bandwith and data. thing is, i had none of these problems with my earlier set up (their provided mobile wifi modem/router with a range extender for LAN connections) |
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Quoted: nope, i havent. I doubt it would work though. As I have explained in my OP, when the problem happens, I am unable to access my router via its own local IP (192.168.0.2) when it should actually work. Quoted: Quoted: When the issue happens, have you tried to ping: - your gateway (aka your router) - another device on your network - 8.8.8.8 If so, what are the results? nope, i havent. I doubt it would work though. As I have explained in my OP, when the problem happens, I am unable to access my router via its own local IP (192.168.0.2) when it should actually work. ICMP is not TCP. Stateless versus statefull. Try it, as it will be the easiest way to determine what layer your connection is failing at. I would suggest even a packet capture, as that would be the no bullshit way of determining what is happening. However, it sounds like that may be a bit much for you. |
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That was my first guess. The other thing I was guessing was some kind of DHCP conflict. As others have said, make sure only the first box is running DHCP. Quoted:
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Just a guess, but the state table is full , or you are running out of ports to use for NAT . Correct way to do this is to bridge over to the 4G AP . You should be getting your IP from it, not another router. I am not sure if that D-link supports it , but look for a "bridge" (IP network engineer since 1996) That was my first guess. The other thing I was guessing was some kind of DHCP conflict. As others have said, make sure only the first box is running DHCP. im positive. no DHCP on the airport extreme. Even when its turned OFF the problem appears soon or later. |
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Quoted: not an option. only ISP providing illimted 4G in my neck of the woods. no better solution in term of bandwith and data. thing is, i had none of these problems with my earlier set up (their provided mobile wifi modem/router with a range extender for LAN connections) Quoted: Quoted: I would look into changing ISPs. not an option. only ISP providing illimted 4G in my neck of the woods. no better solution in term of bandwith and data. thing is, i had none of these problems with my earlier set up (their provided mobile wifi modem/router with a range extender for LAN connections) |
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ICMP is not TCP. Stateless versus statefull. Try it, as it will be the easiest way to determine what layer your connection is failing at. I would suggest even a packet capture, as that would be the no bullshit way of determining what is happening. However, it sounds like that may be a bit much for you. Quoted:
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When the issue happens, have you tried to ping: - your gateway (aka your router) - another device on your network - 8.8.8.8 If so, what are the results? nope, i havent. I doubt it would work though. As I have explained in my OP, when the problem happens, I am unable to access my router via its own local IP (192.168.0.2) when it should actually work. ICMP is not TCP. Stateless versus statefull. Try it, as it will be the easiest way to determine what layer your connection is failing at. I would suggest even a packet capture, as that would be the no bullshit way of determining what is happening. However, it sounds like that may be a bit much for you. Can you explain me how to perform it ? (im sorry, I wish i knew already) |
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I doubt they are going to allow a non-authorized router on their network then. You are probably stuck with theirs. Quoted:
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I would look into changing ISPs. not an option. only ISP providing illimted 4G in my neck of the woods. no better solution in term of bandwith and data. thing is, i had none of these problems with my earlier set up (their provided mobile wifi modem/router with a range extender for LAN connections) nah, they do. At least plenty of people use other routers and do no seem to have my issue. |
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ok, i've done that but then I had no way to connect to the internet..(even setting my windows 7 PC in automatic IP fields) i noticed my airport got given the same kind of private IP from the ISP but i couldnt connect to that either.. http://i1207.photobucket.com/albums/bb470/Shungito/921_IP_zpsjinm6qwo.jpg~original but maybe I needed to completely reconfigure my airport as a router as advised, with its own DHCP, and physically connect my PC directly to the airport.. damn, I think I understand what needs to be done.... but my question is.. what about those IP fields at my ISP ? can I still have a home network with its 192.168.0.xxx fields ? Quoted:
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Check that box that says "Transparent Bridge." FYI: I tried that with my Dlink (to my DSL modem) and it worked better, but still not solid. ok, i've done that but then I had no way to connect to the internet..(even setting my windows 7 PC in automatic IP fields) i noticed my airport got given the same kind of private IP from the ISP but i couldnt connect to that either.. http://i1207.photobucket.com/albums/bb470/Shungito/921_IP_zpsjinm6qwo.jpg~original but maybe I needed to completely reconfigure my airport as a router as advised, with its own DHCP, and physically connect my PC directly to the airport.. damn, I think I understand what needs to be done.... but my question is.. what about those IP fields at my ISP ? can I still have a home network with its 192.168.0.xxx fields ? If your airport got a private IP from the ISP but couldn't reach the internet, then I think you need to ask your ISP how to set your stuff up to work with their network. |
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Quoted: nah, they do. At least plenty of people use other routers and do no seem to have my issue. Quoted: Quoted: Quoted: Quoted: I would look into changing ISPs. not an option. only ISP providing illimted 4G in my neck of the woods. no better solution in term of bandwith and data. thing is, i had none of these problems with my earlier set up (their provided mobile wifi modem/router with a range extender for LAN connections) nah, they do. At least plenty of people use other routers and do no seem to have my issue. |
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Quoted: Can you explain me how to perform it ? (im sorry, I wish i knew already) |
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It wouldn't hurt to contact your ISP and tell them you have another router then. They know their network. At least they should. Quoted:
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I would look into changing ISPs. not an option. only ISP providing illimted 4G in my neck of the woods. no better solution in term of bandwith and data. thing is, i had none of these problems with my earlier set up (their provided mobile wifi modem/router with a range extender for LAN connections) nah, they do. At least plenty of people use other routers and do no seem to have my issue. Yeah, I could always try. thing is, I doubt the people you can reach through telephone have that kind of knowledge. and im not sure how to reach their technicians/engeneers. I can try their forum.. but. anyway, this would be trying to have it work in Transparent bridge mode. Which doesnt explain why it stop working in non transparent bridge mode once a day or so... |
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Read here as I assume you are running windows. Basically open up a command prompt and type ping <address>. Quoted:
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Can you explain me how to perform it ? (im sorry, I wish i knew already) got it. will try as soon as the problem appears again. thanks |
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got it. will try as soon as the problem appears again. thanks Quoted:
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Can you explain me how to perform it ? (im sorry, I wish i knew already) got it. will try as soon as the problem appears again. thanks Test if your router's gateway address (10.163.202.213 in one of the pics you posted, but this may change whenever you reboot your modem) replies to pings before the connection goes down. Then when it does go down, try pinging that address, your router's address, and something on the internet (8.8.8.8 should work, but test that while the connection is working too). |
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Test if your router's gateway address (10.163.202.213 in one of the pics you posted, but this may change whenever you reboot your modem) replies to pings before the connection goes down. Then when it does go down, try pinging that address, your router's address, and something on the internet (8.8.8.8 should work, but test that while the connection is working too). Quoted:
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Can you explain me how to perform it ? (im sorry, I wish i knew already) got it. will try as soon as the problem appears again. thanks Test if your router's gateway address (10.163.202.213 in one of the pics you posted, but this may change whenever you reboot your modem) replies to pings before the connection goes down. Then when it does go down, try pinging that address, your router's address, and something on the internet (8.8.8.8 should work, but test that while the connection is working too). Done while everything is currently working . I can ping 8.8.8.8 and it works. 4 packets out, 4 packets in. I can ping my router at 192.168.0.2 and it works. 4 packets out, 4 packets in. I can ping my current WAN address at 10.161.162.208 and it works. 4 packets out, 4 packets in. I CAN'T ping my current gateway address at 10.161.162.209. 4 packets out, 0 packets in, 4 losses. will do the same test as soon as my router/modem starts having the issue describe in OP again. |
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I'm going to join the D-Link haters club here and say it's probably the router. I had a D-Link DSL modem/router combo box, and it was shit. Seemed nice at first(especially compared to the old modem that had burned out and was dropping sync every few hours and had horrible speeds), but then I started noticing connection problems with certain services. One instance was IRC servers, something was being blocked in the router that was making the IRC server think I was no longer connected and I would get dropped after 2-3 minutes no matter what. Only thing that fixed the problem was switching to a new router and modem setup. Also noticed that support was somewhat lacking from D-Link and that they seem to prefer to release a new slightly different model instead of updating firmware on old models. I have had decent D-Link products, their basic ethernet switches aren't bad at all, but I will never buy another modem or router made by them. And I'm not sure about their IP cameras, I have one that after a year or so decided to stop working, only spits out runt frames. I haven't had a chance to do any detailed work on it, but without the ability to access the web interface I can't do much. So much like the modem/router, it worked great at first and then pooped on me. Too many times from one manufacturer, so I'm done with them. |
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So the problem showed again this morning. I was able to used my Ipad like last night using the same browser I was using before going to bed.. But when I turned my PC on this morning, it couldn't access the internet, or access the router admin menu via the router Ip (192.168.0.2)
I did the ping test from the PC which couldn't access the internet, and here are the results : I can ping 8.8.8.8 and it works. 4 packets out, 4 packets in. I can ping my router at 192.168.0.2 and it works. 4 packets out, 4 packets in. I can ping my current WAN address at 10.161.162.208 and it works. 4 packets out, 4 packets in. I CAN'T ping my current gateway address at 10.161.162.209. 4 packets out, 0 packets in, 4 losses. Same exact results as situation was normal and everything was working, Anybody understands anything ? |
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So the problem showed again this morning. I was able to used my Ipad like last night using the same browser I was using before going to bed.. But when I turned my PC on this morning, it couldn't access the internet, or access the router admin menu via the router Ip (192.168.0.2) I did the ping test from the PC which couldn't access the internet, and here are the results : I can ping 8.8.8.8 and it works. 4 packets out, 4 packets in. I can ping my router at 192.168.0.2 and it works. 4 packets out, 4 packets in. I can ping my current WAN address at 10.161.162.208 and it works. 4 packets out, 4 packets in. I CAN'T ping my current gateway address at 10.161.162.209. 4 packets out, 0 packets in, 4 losses. Same exact results as situation was normal and everything was working, Anybody understands anything ? Sunds like a DNA issue Ping google.com and post results Run ipconfig /all and post results |
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Sunds like a DNA issue Ping google.com and post results Run ipconfig /all and post results Quoted:
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So the problem showed again this morning. I was able to used my Ipad like last night using the same browser I was using before going to bed.. But when I turned my PC on this morning, it couldn't access the internet, or access the router admin menu via the router Ip (192.168.0.2) I did the ping test from the PC which couldn't access the internet, and here are the results : I can ping 8.8.8.8 and it works. 4 packets out, 4 packets in. I can ping my router at 192.168.0.2 and it works. 4 packets out, 4 packets in. I can ping my current WAN address at 10.161.162.208 and it works. 4 packets out, 4 packets in. I CAN'T ping my current gateway address at 10.161.162.209. 4 packets out, 0 packets in, 4 losses. Same exact results as situation was normal and everything was working, Anybody understands anything ? Sunds like a DNA issue Ping google.com and post results Run ipconfig /all and post results Sorry, but I have reverted back to my old setup and plugged the Dlink off so I can go back where I bought it, and exchange it for a new one (might take a couple of days) I figure, I would first eliminate the possibility of a defect product before bothering anyone else any longer. As soon as I get the new router back, i will plug it in again, set it up, and will report if the same problem appears, and if it does, with your permission, ill ask your help again. out of curiosity, what is a DNA issue ? |
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Sorry, but I have reverted back to my old setup and plugged the Dlink off so I can go back where I bought it, and exchange it for a new one (might take a couple of days) I figure, I would first eliminate the possibility of a defect product before bothering anyone else any longer. As soon as I get the new router back, i will plug it in again, set it up, and will report if the same problem appears, and if it does, with your permission, ill ask your help again. out of curiosity, what is a DNA issue ? Quoted:
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So the problem showed again this morning. I was able to used my Ipad like last night using the same browser I was using before going to bed.. But when I turned my PC on this morning, it couldn't access the internet, or access the router admin menu via the router Ip (192.168.0.2) I did the ping test from the PC which couldn't access the internet, and here are the results : I can ping 8.8.8.8 and it works. 4 packets out, 4 packets in. I can ping my router at 192.168.0.2 and it works. 4 packets out, 4 packets in. I can ping my current WAN address at 10.161.162.208 and it works. 4 packets out, 4 packets in. I CAN'T ping my current gateway address at 10.161.162.209. 4 packets out, 0 packets in, 4 losses. Same exact results as situation was normal and everything was working, Anybody understands anything ? Sunds like a DNA issue Ping google.com and post results Run ipconfig /all and post results Sorry, but I have reverted back to my old setup and plugged the Dlink off so I can go back where I bought it, and exchange it for a new one (might take a couple of days) I figure, I would first eliminate the possibility of a defect product before bothering anyone else any longer. As soon as I get the new router back, i will plug it in again, set it up, and will report if the same problem appears, and if it does, with your permission, ill ask your help again. out of curiosity, what is a DNA issue ? Sorry, autocorrect DNS Sounds like some internal services on the router are crashing Replacement may fix it If not, post here and I'm sure one of the IT crew can figure it out Or IM me if you want; you are a good guy and I don't have a problem helping you, I can even do a remote and help you |