Source
r/crestron•
therealroulette

Control Subnet Routing

What is the best way to handle a static route with Control Subnet?

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Basically I am talking to a Just Add Power system and the network switch is at 192.168.5.200, from what I understand, if I want to talk to one of the JAP receivers, then I must open a telnet connection to them (they are addresses at 10.0.3.xxx). I have been informed by tech support that I should change my default gateway to 192.168.5.200, so when I start that telnet connection the CS will route to the net switch.

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There has got to be a different way. Any suggestions?

Posted Jun 17, 2019, 8:13 PM UTC

02
crestron-ta3Throwaway3•

Not 100% sure I understand the scenario from the way you worded it. But sounds like you have a 3rd party network switch on the CS that you want to be able to establish a Telnet session with from the LAN side of the processor...

https://support.crestron.com/app/answers/answer_view/a_id/1000110/

Create a DHCP Reservation for the CS-side device you want to access (preferred to setting a static IP on the CS-side device because you'll be able to see it in the CS DHCPLEASES. Avoid having to hunt for a device when you don't know its static address and don't have physical access to the CS.). Then refer to the Manual NAT section at the bottom of the OLH. Specify an arbitrary LAN-side (external) port (ex. :50023) that maps to CS-side (internal) port :23.

1
parkthrowaway99•

Connect the client's network switch to the LAN section of the processor. Leave all your crestron stuff in the CS network (with your own layer 2 switch). The Lan section will 1) pick up the right address in the 192.168.5.xxx network (assuming its a /24 network). The CS, will pick up a different private class other than C (192.168.x.x is a private class c networks) so it will set itself either to a class A: 10.x.x.x or a class B: 172.16.x.x to 172.31.x.x.. Leave the CS alone and let it do it's thing. You will still going to be able to talk to the JAP through the LAN port, since the router will now the 10.0.3.xx network and route appropriately. If the CS decides to use a 10.0.3.xxx network you will have to manually set the CS to something different or the processor will not know how to reach the JAP receiver. (so you'd be better off by setting the CS manually if you know how to)

1