Chapter 13 Routing Protocols

13.2 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 295.

•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.

To access this screen, login to the web configurator. When the main screen appears, click Network > Routing > RIP to open the following screen.

Figure 199 Network > Routing > RIP

The following table describes the labels in this screen.

Table 94 Network > Routing Protocol > RIP

LABEL

DESCRIPTION

Authentication

 

 

 

Authentication

Select the authentication method used in the RIP network. This authentication

 

protects the integrity, but not the confidentiality, of routing updates.

 

None uses no authentication.

 

Text uses a plain text password that is sent over the network (not very secure).

 

MD5 uses an MD5 password and authentication ID (most secure).

 

 

Text

This field is available if the Authentication is Text. Type the password for text

Authentication

authentication. The key can consist of alphanumeric characters and the

Key

underscore, and it can be up to 8 characters long.

 

 

288

 

ZyWALL USG 100/200 Series User’s Guide