dynamic routing
the router's dynamic routing feature can be used, so the router will automatically adjust to physical changes in the network's layout. using the dynamic rip protocol, the router calculates the most efficient route for the network’s data packets to travel between the source and the destination, based upon the shortest paths. the rip protocol regularly broadcasts routing information to other routers on the network. it determines the route that the network packets take based on the fewest number of hops between the source and the destination.
working mode. select gateway mode if the router is hosting your network’s connection to the internet. select router mode if the router exists on a network with other routers, including a separate network gateway that handles the internet connection. in router mode, any computer connected to the router will not be able to connect to the internet unless you have another router function as the gateway.
rip (routing information protocol). to use dynamic routing for communication of network data, click the enabled radio button. otherwise, keep the default, disabled.

receive rip versions. to use dynamic routing for reception of network data, select the protocol you want: none, ripv1, ripv2, or both rip v1 and v2.
transmit rip versions. to use dynamic routing for transmission of network data, select the protocol you want:
none, ripv1, ripv2 - broadcast, or ripv2 - multicast.
static routing
if the router is connected to more than one network or there are multiple routers installed on your network, it may be necessary to set up static routes. the static routing function determines the path that data follows over your network before and after it passes through the router. you can use static routing to allow different ip domain users to access the internet through the router.
static routing is a powerful feature that should be used by advanced users only. in many cases, it is better to use dynamic routing because it enables the router to automatically adjust to physical changes in the network's layout.
if you want to use static routing, the router's dhcp settings must be disabled. then add routing entries to the static routing table. these entries tell the router where to send all incoming packets. all of your network routers should direct the default route entry to the 10/100 16-port vpn router.
to create a static route entry, enter the following information:
1. in the destination ip field, enter the network address of the remote lan segment. for a standard class c ip domain, the network address is the first three fields of the destination lan ip, while the last field should be zero.
2. in the subnet mask field, enter the subnet mask used on the destination lan ip domain. for class c ip domains, the subnet mask is 255.255.255.0.
3. in the default gateway field, enter the ip address of your network’s gateway. if this router is used to connect your network to the internet, then the gateway ip is the router's internet ip address. if you have another router handling your network's internet connection, enter the ip address of that router instead.
4. in the hop count field, enter the appropriate value (maximum is 15). this indicates the number of nodes that a data packet passes through before reaching its destination. a node is any device on the network, such as a switch, pc, or router.
5. from the interface drop-down menu, select the appropriate interface. the interface tells you whether your network is on the lan or the wan (the internet). if you’re connecting to a sub-network, select lan. if you’re connecting to another network through the internet, select the appropriate wan port option.
6. click the add to list button, and configure as many static routing entries as you would like, up to a maximum of 30. to delete an entry, select it and click the delete selected ip button.
click the save settings button to save your changes or click the cancel changes button to undo your changes.
click the show routing table button to view the current routes and their settings.