ZyXEL Communications Prestige 100WH - Manual (Page 74)

Prestige 100WH Internet Access Router
5-6 Chapter 5 Remote Node TCP/IP Configuration
The comparison of the negotiated and configured IP network numbers (as opposed to IP
addresses) means that, as long as the resulting network numbers agree, you don’t have to
know the exact IP address of the remote gateway. On the other hand, the Prestige will
disconnect if the negotiated network number is different from the configured, since it implies
the routing information derived from the remote node is incorrect.
5.1.2 Static Route Setup
Static routes tell the Prestige routing information that it cannot learn automatically through
other means. This can arise in cases where RIP is disabled on the LAN or a remote network is
beyond the one that is directly connected to a remote node.
Each remote node specifies only the network to which the gateway is directly connected, and
the Prestige has no knowledge of the networks beyond. For instance, the Prestige knows
about network N2 in the following diagram through remote node R. However, the Prestige is
unable to route a packet to network N3 because it doesn’t know that there is a route through
remote node R. The static routes are for you to tell the Prestige about the networks beyond the
remote nodes.
Figure 5-4. Example of Static Routing Topology
N1 N2
N3
Router
R
Router
Prestige 100WH