ZyXEL ZyWALL USG 50 User Manual - Page 298

Chapter 14 Routing Protocols 14.2 The RIP Screen RIP (Routing Information Protocol, RFC 1058 and RFC 1389) allows a device to exchange routing information with other routers. RIP is a vector-space routing protocol, and, like most such protocols, it uses hop count to decide which route is the shortest. Unfortunately, it also broadcasts its routes asynchronously to the network and converges slowly. Therefore, RIP is more suitable for small networks (up to 15 routers). • In the ZyWALL, you can configure two sets of RIP settings before you can use it in an interface. • First, the Authentication field specifies how to verify that the routing information that is received is the same routing information that is sent. This is discussed in more detail in Authentication Types on page 309. • Second, the ZyWALL can also redistribute routing information from non-RIP networks, specifically OSPF networks and static routes, to the RIP network. Costs might be calculated differently, however, so you use the Metric field to specify the cost in RIP terms. • RIP uses UDP port 520. Use the RIP screen to specify the authentication method and maintain the policies for redistribution. Click Configuration > Network > Routing > RIP to open the following screen. Figure 180 Configuration > Network > Routing > RIP 298 ZyWALL USG 50 User's Guide