Cisco VPN Router RV325 setting

[ckc18751]

I have a Cisco VPN Router RV325.

Below is our simplified network structure.
CCTV network--------------CCTV switch----------------A 2 NIC card NVR------------Cisco VPN Router----------(gateway to gateway)---------------Cisco VPN Router at other location
CCTV network

IP:172.16.2.145-148

GW:172.16.2.254

CCTV switch

IP:172.16.0.xxx

172.16.0.254

NVR NIC(1)

172.16.0.112

172.16.0.254

NVR NIC(2)

192.168.10.210

192.168.10.220

Cisco VPN Router

192.168.10.220

192.168.2.220

Cisco VPN Router at other location

192.168.3.193
192.168.3.193

The current situation is the NVR set default route as (1) so it is able to obtain data from CCTV cameras. However as (2) isn't its default selected NIC so it cannot communicate with devices from Cisco VPN Router at other location. We are hoping the devices from 192.168.3.xxx is able to obtain the data from the NVR. The NIC(2) can only communicate with the devices connected in CISCO VPN Router which is within the .10 network.
My question is since there is only one default gateway, could the VPN Router RV325 able to set the NIC(2) address to send/receive packets to the VPN tunnel to the 192.168.3.xxx. And how?

P.S. If I use a computer connected to the VPN Router (.10 network), I could access to the VPN Router at other location.

[balaji.bandi]

Do you have a rough diagram of how these are connected, what is the mean of NIC 1 and NIC 2 ? is it the from Camera ?

If RV do not have the visibility of the network, then the traffic is not passed.

you need to make an arrangement on the device to send the route to RV, and RV should send the route back to network IP which is aware.

[ckc18751]

NIC 1 and NIC 2 is from the NVR. NVR is a Dahua Video Recorder NVR608. It has two ethernet cards. NIC 1 is the default eth card which is to connect the camera network to obtain the camera signals. NIC 2 is connect to the VPN router to let other site to view camera image collected by NVR.

For the NVR, if I set the default card to 2. It can connect to other site, but cannot retrieve the camera images. The issue is only one gateway is allowed. 

https://www.ni.com/en-us/support/documentation/supplemental/11/best-practices-for-using-multiple-network-interfaces--nics--with.html 

Similar to case4 but this time the OS(that the NVR OS) does not able to set the route. So I am asking if I am able to set it from VPN Router to solve the issue?and How

[balaji.bandi]

never worked on that model of NVR, if only 1 NIC is required, why not RV and NIC 1 connected to the same switch, so all in one network ? is that works?

[ckc18751]

No. We want to separate the network. We want the other site can only view the images retrieved from the NVR.

[balaji.bandi]

Then on RV, you need to add a static route back to your 10 networks towards NIC 2 Interface at the same time NVR should have a route back towards RV for this work (not sure what capabilities NVR it has ?)

[Georg Pauwen]

Hello,

which Hypervisor are you running, Linux or Windows ? In case it is Windows, you could try and bridge both NICs. The link you provided talks about Windows XP as the host OS, not sure if you are really using that (as it is is obviously extremely outdated), but just in case, below are the links on how to set up a bridge in XP and in Windows 10:

XP

https://www.home-network-help.com/network-bridge.html

Windows 10

https://www.windowscentral.com/how-set-and-manage-network-bridge-connection-windows-10

If you are running Linux, you probably need to install a bridge utilities package first:

Linux

http://www.microhowto.info/howto/bridge_traffic_between_two_or_more_ethernet_interfaces_on_linux.html

[ckc18751]

The NVR should be running in Linux.

https://www.dahuasecurity.com/products/productDetail/6511

But I dont think I can install any package in the NVR.