Unable to network to Printer

Numbnuts · 01-14-2019, 09:26 PM

See Attached Picture.
It explains pretty much everything.
List of Routers and their OS
Router 1 - Openwrt
Router 2 - Openwrt
Router 3 - OpenWrt
Router 4 - DD-Wrt
- The reason I have each IPv4 LAN (br-lan) set up as 192.168.x.1 is so that I can SSH from Laptop 1 to Router 4, for example.
LAN interface protocols on Routers 1, 2, and 3 are all static addresses with an I_v4 netmask of 255.255.255.0.
IPv4 gateway and IPv4 broadcast are blank

business_kid · 01-15-2019, 06:36 AM

As to what you're doing wrong, I think you're subnetting the laptops, requiring routes to each laptop. Are you trying to keep the laptops away from each other?

Why not put them all on the same subnet as router, and printer? Vary the last figure in the IPV4 address. Set them up, e.g.

192.168.1.1 Router
192.168.1.10 Laptop 1
192.168.1.11 Laptop 2
192.168.1.12 Laptop 3
192.168.1.5 Printer

So they're all on the 192.168.1.0/24 route set up by dhcpcd or suchlike. Also, make sure the default comes last. Presuming the table is read from the top, the system might pass EVERYTHING else to the default, ignoring lines in the routing table below it. Cisco routers are capable of it, I am told.

frankbell · 01-15-2019, 09:11 PM

I second what business_kid said. By putting each device on a separate router, you are effectively giving each device its own subnet. I think you would be better off replacing all those routers with a hub or, even better, a switch. That way they could see and communicate with each other easily.

I commend this tutorial to your attention. Don't be fooled by the HTML v. 3 look. It is the best thing on subnetting I've yet seen.

Numbnuts · 01-16-2019, 07:33 PM

frankbell

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I second what business_kid said.  By putting each device on a separate router,  
you are effectively giving each device its own subnet.  I think you would be better  
off replacing all those routers with a hub or, even better, a switch.  That way they  
could see and communicate with each other easily

>you would be better off replacing all those routers with a hub or, even better, a switch.
Wouldn't that negate the necessity of a wireless bridge then? I can't be laying new CAT5 all over the place.

business_kid

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Why not put them all on the same subnet as router, and printer? Vary the last figure in the IPV4 address. Set them up, e.g. 
    192.168.1.1 Router 
    192.168.1.10 Laptop 1 
    192.168.1.11 Laptop 2 
    192.168.1.12 Laptop 3 
    192.168.1.5 Printer

I tried that already - thanks though.

I have someone else saying that I should:

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1.)  Convert router 3 WAN interfaces to static IP and disable NAT 
2.)  Convert router 4 WAN interfaces to static IP and disable NAT 
3.)  Add static route on router 1 to 192.168.0.0/24 via router 3's WAN IP 
4.)  Add static route on router 4 to 192.168.4.0/24 via router 3's WAN IP. 
5.)  Add static route on router 3 to 192.168.4.0/24 via router 4's WAN IP.

I'm going to try that a bit later and see what happens.

If there is anyone else with a solution, please put it forward.
Much appreciated.