Installation guide

Wireless ADSL Modem User’s Manual 58
RIP Configuration
RIP (Routing Information Protocol) is a management protocol that ensures that all hosts
in a particular network share the same information about routing paths. In a RIP, a host
computer will send its entire routing table to another host computer every X seconds,
where X is the supply interval. The receiving host computer will in turn repeat the same
process by sending the same information to another host computer. The process is
repeated until all host computers in a given network share the same routing knowledge.
There are several components to RIP, including the authenticator, supplier, and listener.
Authenticator: Authentication is only available for RIPv2. When it is disabled, RIPv2
messages containing authentication entries are discarded. When it is enabled, all RIPv2
messages must have proper authentication entries, and all RIPv2 messages without
verified authentication entries and all RIPv1 messages are automatically rejected.
Supplier: The RIP Supplier has two functions:
• It transmits route updates over every RIP Supplier interface at the interval
specified by Supply Interval (see below).
• It transmits route updates in response to specific requests from other routers.
Listener: The RIP Listener listens and processes all RIP messages it receives from other
RIP routers and updates the host routing tables accordingly. The RIP Listener is always
enabled when RIP is enabled. By default, RIP is disabled.
The announcement messages RIP sends are based on two configuration parameters: RIP
Version number and Multicast:
Version Multicast Announcements Sent
1 OFF V1
2 ON V1
2 OFF V2-BC
2 ON V2-MC
The RIP messages that can be received and processed are based on two configuration
parameters: RIP Version number and Multicast:
Version Multicast RIP Messages Received
1 OFF V1
2 ON V1
2 OFF V1 & V2-BC
2 ON V2-BC VC-MC
The RIP Configuration page allows you to set the configuration for the system wide
configuration of RIP. The actual RIP configuration is in the RIP Per Interface
Configuration.