Configuring a Gateway-to-Gateway VPN Tunnel Between RV0xx Series Routers

Other Design Considerations

D

one boat, so to speak, by obtaining a Fully Qualified Domain Name (FQDN) and registering at least one site with a Dynamic DNS service. This service associate tracks your dynamic IP address to ensure that your router is reachable even when the address changes.

As illustrated below, Dynamic DNS service ensures that traffic for the FQDN, MyBusiness.DynDNS.org, is routed to the dynamic IP address.

Figure 4 Gateway To Gateway Tunnel with a Dynamic IP Address

Outside

Site A 209.165.200.226

RV016 router

Inside

192.168.1.1

Printer

Personal

computers

Internet

Outside

MyBusiness.DynDNS.org

(dynamic IP address)

Site B

RV042 router

Inside

192.168.2.1

Printer

Personal

computers

199896

Free Dynamic DNS accounts are available through many providers. Examples are listed below.

-http://dyn.com/dyndns

-http://update.ods.org

-http://www.dhs.org

-http://www.3322.org

-http://www.no-ip.com

LAN Setup

The LAN setup pertains to the network that your router connects to inside your office. It should not be necessary to make any changes in your LAN setup, unless both sites have the same addressing. The two ends of the tunnel cannot be on the same subnet. For example, if the LAN IP address of the RV0xx router at Site A is 192.168.15.1, Site B must use a different subnet, such as 192.168.75.1.

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Cisco Systems RV042G, RV016 manual Gateway To Gateway Tunnel with a Dynamic IP Address, LAN Setup