One Cat5 two subnets

[Alfsu]

Hello everyone, I would appreciate your comments on the proposed network configuration attached.

I have a DSL and a 4G Router connection in two separate locations, mainly due to needing an external antenna for LTE signal gain.
Router 2 has dual WAN.
Can it be accomplished?
Thank you.

 

[thiggins]

If you have three WAN connections, you should have a router capable of handling 3 WANs. Otherwise you need to change the gateway and DNS on clients or manually set static routes on them.

 

[abailey]

The way you have your diagram right now, it will not work well (if at all). You really need managed switches(Layer 2) in place of the "Unmanaged Hub". That should be all you need if you don't want the .200 network to connect to the other networks, or to the internet. If you want the .200 network to see the other networks, and/or the internet, you will have to run that connection through a router, or a "Routing Switch" (layer 3). So you could put one Layer2 managed switch and one layer 3 managed switch in and it would work. Or you could put in two layer 2 managed switches and a router. It is hard to give you specific advise as you did not tell us much about what you are trying to do here. Also you did not tell us the make and models of your current routers.

 

[mervincm]

I think it can work as is. It's not ideal from a configuration or a security perspective, but I think it will work. Swapping your un-managed hubs for switches that can do VLANS will fix it. As long you either hard code all your IPs, or limit all DHCP to one address range, I think you will be OK.

Try it out and let us know.

 

[Alfsu]

Thank you all for your valuable comments. It appears like there is a split oppinion about this configuration though.

I realize the best solution would be to run a new cable from "Router-2"'s location to the location where "Comp" is, and segregate one of the unmanaged hubs to the new cable instead of both connected to the same cable.

I am still curious about this adea though, fortunately I will be home alone for a few days and have some time to try and find out if it works or not.

So, I will post my findings later.


PD: My main router is an RT-AC66U. The other two are just a DSL modem/router and a wireless 4G Huawei modem/router. Sorry for not providing these details before, but I thoght they were irrelevant for what I am trying to accomplish.

Cheers!

 

[fistv]

You can put as many subnets on a layer 3 switch as you want, you can use the netmask to control access to all or one as long as they are on the same net. I don't know if a consumer router will handle a Class A or B, never tried it.

 

[azazel1024]

You can put as many subnets on a layer 3 switch as you want, you can use the netmask to control access to all or one as long as they are on the same net. I don't know if a consumer router will handle a Class A or B, never tried it.

Not that I have seen. All consumer routers I have seen will handle a single x.x.x.1-254+multicast range and that is it.

 

[fistv]

Not that I have seen. All consumer routers I have seen will handle a single x.x.x.1-254+multicast range and that is it.

Pretty much my experience as well.

 

[chadster766]

Not that I have seen. All consumer routers I have seen will handle a single x.x.x.1-254+multicast range and that is it.

Most third party firmwares do support subnetting though.

I'm pretty sure the WRT1900AC support 255.255.x.x but I wouldn't recommend that router for business purposes especially if Active Directory is a requirement. At least not until a good third party firmware is available

 

[azazel1024]

True, but within reason (so long as no hardware limitations), the sky is the limit with alt firmwares.

In my, admittedly somewhat limited experience, stock firmware is sometimes better/more stable depending on the hardware and manufacturer even if you have much more limited features.

For instance, dd-wrt is overall nice, but on something like my TP-Link 841nd, the stock firmware is rock steady and has better wireless range and performance than dd-wrt seems to have on it (in testing I think I had to do 2 reboots in 2 weeks. Stock firmware 0 reboots in around 3 months of uptime and throughput is around 5-15% better with stock firmware).

On the other hand, Netgear 3500l, dd-wrt seems rock steady with better features, though again wireless performance is slightly less than the stock firmware which is why I eventually reverted back.