Cisco Systems RV016, RV042G manual Other Design Considerations, WAN Setup

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

Other Design Considerations

Other Design Considerations

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Before you configure your VPN tunnels, consider the following points about your network setup.

WAN Setup

The WAN setup pertains to the network that your router connects to outside your office. The first consideration is the type of IP addresses that you received for your Internet service at your two sites. As when constructing a physical tunnel or bridge, you need to know where the VPN tunnel is going.

•If at least one site has a static IP address: A VPN tunnel easily can be established if at least one of the sites has a static IP address for the WAN connection. A static IP address is a publicly routable Internet address that does not change. In this scenario, establishing a VPN tunnel can be compared to building a bridge between two docks (two sites with static IP addresses), or even setting a gangplank between a dock and an unanchored boat (one site with a static IP address and one with a dynamic IP address).

Figure 3 Gateway To Gateway Tunnel with Static IP Addresses

Outside Site A 209.165.200.226/24

RV016 router

Inside 192.168.1.1/24

Printer

Personal

computers

Internet

Outside			Site B
209.165.200.236/24
		RV042
		router
	Inside
	192.168.2.1/24

	Printer
Personal	199468
computers

•If both sites have dynamic IP addresses: A dynamic IP address is a publicly routable IP address that is issued for your use when you connect to your service provider’s network. Dynamic IP addresses may change without warning. In this scenario, establishing a VPN tunnel is like trying to build a bridge between two unanchored boats. However, you can “anchor”

Cisco Small Business RV0xx Series Routers Administration Guide 173