Ruida 8445 over LAN not connecting - subnet issue?

[StuMid (Stu)]

Hey all,
I can’t seem to connect Lightburn to my Ruida 8445 via LAN. They’re both on the same network and both connected. I can ping the controller from the PC, but Lightburn just doesn’t see it.

A bit of googling suggests that is may be a subnet issue, suggesting Ruida controllers only support 255.255.255.0 subnets, whereas I have a 255.255.254.0 subnet. Before I go to the trouble of creating a VLAN just for the laser and PC, can anyone confirm this, or suggest other things to try?

Thanks.

[ednisley]

@StuMid

Ruida controllers only support 255.255.255.0 subnets

That is, unfortunately, correct.

A previous discussion may be helpful:

Anyone Know: Has the Ruida Firmware ever been updated to fix their Network Limitation?

Rather than waiting for Ruida to fix their IP Stack, I purchased a tiny $70 Router to sit between the machine and my network. It works great. This effectively puts the Ruida controller on its own isolated Class-C network (192.168.2.0/24) underneath my own Class-B network (172.20.0.0/16). https://www.amazon.com/dp/B0BNPTW2L2 [Router] I was going to try this with a Raspberry Pi, but Pi’s only have a single ethernet port and this device is smaller and cheaper anyway. It appears to be the per…

[ClayJar (Nathaniel Klumb)]

Is your PC’s IP also 192.168.4.*?

If you’re in the same /24, both your computer (which knows it’s on a /23) and the ruida controller (which is stupidly coded and believes only /24 exists) would treat things as being in the directly-connected network segment.

Basically, there are two requirements:

1. For packets from the ruida, the PC’s IP must match the controller’s first three octets, i.e. a /24 netmask, 255.255.255.0.

2. For packets from the PC, the ruida controller’s IP must be within the directly-connected network segment, whatever netmask that may have.

If both of these are true, i.e. both IP’s are within whichever is the more restrictive configuration, the connection succeeds.

[NicholasL (Nicholas Leqeta)]

Interesting, I wasn’t aware of this issue of only /24, what happens if you relax/open up the mask to 255.255.0.0 ? (which I’m sure I have used before).

[StuMid (Stu)]

Thanks for the info.

The PC and controller are both on 192.168.4.X. Originally this wasn’t the case (controller assigned to 192.168.5.234) but I’ve forced it into 192.168.4.X to match the PC, thinking this would solve the problem as the first 3 octets match, but it didn’t. The PC and controller are on a mini unmanaged network switch which is connected to my main network.

[StuMid (Stu)]

I have now restructured my network to be on the 24/0 subnet and still no luck! The controller also has a hotspot mode. Turning this on and directly connecting from the PC still doesn’t work!

I’m going to try a different PC next just in case it’s insane

[StuMid (Stu)]

I’ve also installed Lightburn on my mac for the first time and it can’t connect. I’m beginning to think the controller doesn’t work

[StuMid (Stu)]

I’ve just spotted this thread about my controller… Does this mean Lightburn doesn’t actually support the 8445 over LAN?

Ruida 8445S - Ethernet

Any idea on when Ethernet functionality might debut for the Ruida 8445S, or is that not on the roadmap yet? I’m excited to jump off the USB cable. Thanks!

[Colin (Colin Worobetz)]

The 8445 is supported over LAN with LightBurn 2.1 RC - see more here: LightBurn 2.1.00 Release Candidate

[StuMid (Stu)]

THANK YOU! I thought I was going mad!

[StuMid (Stu)]

I can confirm this works fantastically on the pre-release.