 Hi there, welcome back to my YouTube channel. This is Daniel Rosal here. So a couple of nights ago. I did a demonstration failover failing from my primary internet connection over to my cellular Backup connection that I just got set up and I did a couple of videos on How to do that for anybody else interested in backup internet and how it actually works. So basically what I got was a TP link router. Now, this is something I picked up a couple of weeks back It's one of the more basic TP link routers, but it is a 4G cellular router It's got a SIM card slot in it got a couple of antennas and it picks up 4G onto that SIM card and the way I have this setup is as a as a backup or failover Router so the kind of network config as I described in the previous YouTube video is that my ISP's router is going into the one port of this cellular router and It's passing along the ISP ISP connectivity and it also changed a few settings so that it knows that it's running as a backup So that the cellular connection it can give is not the primary It's just a failover connection So if the ISP line your internet service provider your internet your home internet if that goes down The cellular will come in so I demonstrated that that worked which was nice And good, but it didn't work quite as swiftly as I kind of had pictured So I thought it was like an instant thing that one second you are Get you are just using your home internet then you took it out and then within a second and If you ask anybody who knows about home networking I've learned they'll tell you that it never works exactly that instantaneously So I thought it would be interesting as an experiment just to repeat that failover test Except this time to try to measure the length of time Now I did a previous take of this video that almost ended in disaster because I use the DNS Disabling switch on my router Which was not a good idea at all because so don't don't do that Don't disable the DNS button on your router because my ISP had to like Do something remotely to get it back. I think in any event it was not smart So what I'm going to do this time is as I did before like physically remove the DSL from the from the ISP router just to simulate a Complete drop-off and connectivity and we're going to see how long it takes to kick in now I have found a useful website and it's called my is my internet your internet is working Is my internet working comm so what I'm actually going to do Is I'm going to just take myself out of this here and I'm going to run over to the other side of the room Pull out the DSL cabling from the from a router and as soon as that has happened I'm going to come back here and hit start so it's not going to be a perfect process or be a couple of seconds of of You know that it'll be so we'll just have to take two seconds off the results to account for the time it took for me to Wheel across the room in my chair. So there is an auto test function So I go to now set that to two seconds so every two seconds it's going to check my internet to see that it's up and The second thing I'm doing here is what is my what is my browser.com has a what's your ISP? Testing facility and I'm going to just do a quick refresh just to show you guys It's refreshed that I'm with partner communications. That's my ISP so Internet's good internet stable internet's up and now You're listening to me wheel wheel wheel across the room And I don't want to take out the RJ 11 cabling the SL line to my ISP rather three two one Okay Speed is connected and they should start saying no indeed it does so We have we have done the big deed. Oh the timer the timer stop watch Well, I guess I can measure later in the video. So this is going to be like 10 seconds often for it's not late So, let's see right like let's see 15 seconds so far And we're still not having internet Let's see I think the last time I got like 30 seconds for the failover so that really wasn't bad I mean how often does this happen? Not that often But it's not like two seconds even even without that time where I was like forgot to start this on time So what should be happening now is the Here we go. Okay, so 35 seconds was what I recorded but I also Fail to start this on time, right? So I need to add it's very late in the morning My brain is not working so well. I need to add like a bit more time to To that to actually account so I would say about like 45 seconds for that failover to happen And if I do a refresh here, it should say something like I forget it. It's like X phone or X 0 18 It's not really the name of the phone company. It's like they're a pairing company X phone. There we go X phone 0 18 So now we know we are using the We're using the line of The cellular So I'm going to go what I'm going to go ahead and do now is repeat the process. So 40 let's say 45 seconds On failover to cellular. Now. Let's see how long it's going to take to get us back to the ISP line. So I'm going to now Do my wheelie trick again reset the stopwatch and Let's see how long this one takes so stopwatch is going to be clear zeroed and Weaving across the room again this time getting the DSL cable and I'll tell you the moment it's in. Oh, okay. It's safe. So this time let's get the stopwatch It's saying yes, but it's going to be saying yes anyway because there is internet So the more trying test is going to be or the more telling test will be when this switch is back to partner. So X phone Still X phone 14 seconds in Still X phone, I'm just going to turn the writer array back to its usual config still actual still X phone 30 seconds, so if it was 45 seconds on the way out, I wonder is that like just what it takes For the writer to detect these configuration changes and swap over. So I'm just checking the DSL is back up on the writer So the writer has it the writer's passed me along and now we're just waiting on the writer to actually take note of its shifted connectivity circumstances and This is actually taking longer. So it's taking me interestingly enough taking longer to fail back Over to ISP than it was to fail Across in the other direction Well, that's not really the right word fail I now I think we're gonna get we're gonna get partner because it's taking longer, but we're already into one minute and 20 seconds I'm gonna just open another one and I think this is what happened the last time is like it goes down for 15 seconds while it's doing its like change of network thing What is my browser calm? Or it could actually be the website I'm just going to another No, yes, okay. I'm on another website now and it's saying that I'm on Partners, so I think this is a coincident. There we go partner. Okay, so it was more like one minute and 30 seconds to fail back To the ISP from the sider So I guess this was like it's somewhat interesting test I guess the the what I've learned is that it takes give or take 40 seconds for From the time that your primary internet goes completely down or at least on this TP link device through to the point that it feeds in the cellular and you get your backup line running and When your primary internet comes that it comes back It's going to take like or on this on this particular configuration with my ISP my cellular And the way I wired and the TP router I'm using which again is the TP link 300 megabit per second TL MR 100 with all those variables It took approximately a little bit over a minute on the return site. So it actually took slightly longer to Provision the ISP line back than it did to do the failover. So that was interesting Anyway, that was the test of how long the failover took I hope this video is interesting if you'd like to get more videos from me Please feel free to subscribe to this YouTube channel