Using one network card to view office DVR

You should be fine as long as the Internet NIC is plugged in first. Your routing table will confirm you have done it correctly.

jobeard can expand.

 

Thanks for the reply. Would I need to reconnect the cables every time I turned on the computer or how would I guarantee that the internet card was the first one to be detected?

 

You describe this setup

Code:

(setup-1)
DSL -=- Modem/Router
		  |
		  | (path-a)
		  PC
		  | (path-b)
		  |
DSL -=- Modem/Router ---DVR

but I think you can see that this would be much easier

Code:

(setup-2)
DSL -=- Modem/Router --- some PC(s)
		  |
		  +--- switch -- DVR
 

Regardless of wired or wifi connections, setup-1 is complicated - - how does the PC determine to use path-a or path-b? It's in the routing table, but that depends upon which router is available first when the PC is booted (or connected). More than one PC is possible on setup-1 in either path-a or b by using a switch, so the lack of connections on a router is not the reason to choose setup-1.

 

Yeah, setup 2 is generally better. Although, I have worked in a small/med business and understand the need for a separate DSL connection.

You could always patch the adjacent wall port to the 2nd network, and just unplug network cables from your machine when you wanted to watch DVR. Tiresome, yes...

Also keep in mind a modem with teaming function.