ZyXEL P-100MH User Guide - Page 74

Prestige 100WH Internet Access Router 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. N1 Prestige 100WH N2 R N3 Router Router Figure 5-4. Example of Static Routing Topology 5-6 Chapter 5 Remote Node TCP/IP Configuration