Other Design Considerations - Cisco RV016 - Small Business - 10/100 VPN Router Administration Manual

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

Other Design Considerations

Other Design Considerations
Cisco Small Business RV0xx Series Routers Administration Guide
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
209.165.200.226/24
Site A
RV016
router
192.168.1.1/24
Printer
• 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"
Internet
Outside
Inside
Personal
computers
Outside
209.165.200.236/24 Site B
RV042
router
Inside
192.168.2.1/24
Printer
Personal
computers
D
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