Networking Question with a router and a gateway

April 4, 2013 at 13:26:15
Specs: Windows 7
Hello,

Let me start by explaining what I have.

I have a comcast business internet gateway with 5 static IP's.

I have a Netgear PROSafe VPN Firewall router under it that is utilizing one of the static IP's.
The Netgear is providing internet access to some workstations that get DHCP addresses from the Netgear. It also has a wireless access point on it.

I also have a Leviton Internet Gateway with a static IP that has a couple of workstations and HVAC equipment on it that have reserved IP's (in the 192.168.1.X range).

I would like to make it so one of the workstations on the Netgear can access the HVAC equipment on the Leviton. How can I do this?

Any help would be much appreciated.


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#1
April 4, 2013 at 13:59:58
What is the subnet range of the netgear dhcp scope?

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#2
April 4, 2013 at 14:03:48
Both the netgear and Leviton use 255.255.255.0 subnets for the Lans under them


(I think you might have meant what range does it give out?) 192.168.1.X - same as the Leviton


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#3
April 4, 2013 at 15:11:52
If all network appliances are part of the 192.168.1.0/24 then they should be able to communicate already.

The HVAC machine in question, how are you trying to connect to it?

If you know the HVAC machines IP address, try pinging it from the computer you wish to connect from. Keep in mind, any built in firewall on the HVAC could prevent any connections or ping responses if it is turned on and set to not allow connections or respond to ICMP requests (ping).

It matters not how straight the gate,
How charged with punishments the scroll,
I am the master of my fate;
I am the captain of my soul.

***William Henley***


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#4
April 4, 2013 at 15:59:36
There would have to be a cable between the netgear and Leviton lan ports for them to communicate.

This would cause issues with their dhcp servers overlap. Solution is to do ip reservations in each router or do static ip assignments being specific as to which router is used as gateway.

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#5
April 8, 2013 at 12:45:39
Hello and thank you for your suggestion. However, it seems as if I have two independent LANs, connected to each other with the Comcast modem. I cannot ping one computer from one LAN to the other. I could essentially put a computer on the Netgear network with an IP address of 192.168.1.100 and I could also put a computer on the Leviton with the same IP of 192.168.1.100 and would have no issues because it is two independent networks. Is there something in the router that I can use to accomplish what I am looking for? (Routing table or RIP?)

Currently, I have a computer on the Leviton network that has a 192.x address, and using Multi-DMZ in the Leviton, I can point one of my Comcast static IP's to the 192.x address. I would set everything up this way, but I am limited to 5 static IP's.

Sorry if this is confusing. I appreciate any help you all may have.

Thanks,

Aaron


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