G+_Jason Brown Posted January 28, 2018 Share Posted January 28, 2018 I ran into an interesting issue with my Asus router. Without going into too much needless detail, I found out the network map feature only works with a Class C address scheme. I personally prefer Class A so I can keep devices in a more memorable space. If you're experiencing the same issue, there's your reason. If you know of a workaround, I'd love to hear it. I can ssh into the thing, but I'm not sure what I can do once I'm in it. Link to comment Share on other sites More sharing options...
G+_Travis Hershberger Posted January 29, 2018 Share Posted January 29, 2018 Why not use an application meant for network mapping rather than using a shoddy utility included in a generally under powered device? Like Fing. Link to comment Share on other sites More sharing options...
G+_Akira Yamanita Posted January 29, 2018 Share Posted January 29, 2018 What does the feature actually do? If it's a network scan, keep in mind that if a class C takes one minute to map, a class A would take roughly 41.5 days. Are you actually using a 255.0.0.0 mask? Link to comment Share on other sites More sharing options...
G+_Jason Brown Posted January 29, 2018 Author Share Posted January 29, 2018 Travis Hershberger I'm happy to use other tools. It's just nice when a feature that's pushed actually works as expected. It's a minor issue, but still an odd bug. I'll probably never really look at it. I do like the idea of having as few extra machines running as possible. Akira Yamanita I never really thought about the amount to time to map out. I guess that makes sense then. I didn't think it was a true network scan, but I couldn't say for sure. I assumed it would just look at it's MAC address table. I use a /8 mask mostly for keeping my various device types easier to remember. I'm constantly bringing in used machines, fixing people's machines, swapping in new(used) hard drives, and reloading Raspberry Pis playing with different packages. So keeping my cameras and servers in their own space keeps me from going nuts. 10.1.1.0 routers/dns/backup drives 10.10.1.0 servers 10.20.1.0 printers 10.30.1.0 workstations 10.40.1.0 cameras etc Link to comment Share on other sites More sharing options...
G+_Travis Hershberger Posted January 29, 2018 Share Posted January 29, 2018 Jason Brown? you want as few extra machines running, but use a class A? Can you understand my confusion. If you really want separate subnets for everything, you can use a class B and class C subnets. I highly recommend starting to stop thinking of subnets in terms of class A, B, and C anyway. For example, the server I rent has a /29 with 5 usable IP addresses. I agree with +akria yamanita, scanning a full class A will take a long time. Any too like this that relies on just an arp table wouldn't be worth much. Link to comment Share on other sites More sharing options...
G+_Akira Yamanita Posted January 29, 2018 Share Posted January 29, 2018 Jason Brown It probably uses the ARP table. Perhaps they disable the network map on the off-chance that you have thousands or millions of devices or there’s a limit to the ARP or MAC address tables and if you exceed that theoretical limit, they just disable the feature. Have you tried longer masks to see what the limit might be? Personally, I’d just break up the /24 or possibly use a /23, but a /20 would be pretty readable and would give you 16 numbers to use in the third octet. Link to comment Share on other sites More sharing options...
G+_Jason Brown Posted February 1, 2018 Author Share Posted February 1, 2018 Travis Hershberger Like I was saying, I find it more aesthetically pleasing to use a class A, that's all. I prefer to speak in subnet classes for the sake of anyone not subnet inclined. I felt like using / annotations might be confusing for some, especially since most people don't calculate subnets at home, they just stick with the hard A, B, C classes. I'd use a class B, but it would give me the same result. I think I'd need to use a /23 to make it work, if it even could. Akira Yamanita I might test it further to see if that'd work. But I just decided to redo my IP scheme. I'd love to indulge my idiosyncrasies, but my wife likes me to be more useful around the house. Ultimately, I was just hoping that this post might be helpful for anyone scratching their heads, because it took me a while to find the solution. Link to comment Share on other sites More sharing options...
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