Configuring Rip - 3Com 7700 Configuration Manual

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The whole process of RIP startup and operation can be described as follows:
1 If RIP is enabled on a router for the first time, the router broadcasts a request
packet to adjacent routers. When they receive the request packet, adjacent routers
(on which RIP is also enabled) respond to the request by returning the response
packets containing information about their local routing tables.
2 After receiving the response packets, the router that sent the request modifies its
own routing table.
3 RIP broadcasts its routing table to adjacent routers every 30 seconds. The adjacent
routers maintain their own routing tables after receiving the packets and elect an
optimal route, then advertise the modification information to their adjacent
network to make the updated route globally available. Furthermore, RIP uses the
timeout mechanism to handle the timed-out routes to ensure the timeliness and
validity of the routes. With these mechanisms, RIP, an interior routing protocol,
enables the router to learn the routing information of the entire network.
RIP has become one of the most popular standards of transmitting router and host
routes. It can be used in most campus networks and t regional networks that are
simple, yet extensive. For larger and more complicated networks, RIP is not
recommended.

Configuring RIP

Only after RIP is enabled can other functional features be configured. But the
configuration of the interface-related functional features is not dependent on
whether RIP has been enabled. It should be noted, however, that after RIP is
disabled, the interface-related features also become invalid.
The RIP configuration tasks are described in the following sections:
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Route tag — The indication whether the route is generated by an interior
routing protocol or by an exterior routing protocol.
Enable RIP and Enter the RIP View
Enable the RIP Interface
Configure Unicast RIP Messages
Specify the RIP Version
Configure RIP-1 Zero Field Check of the Interface Packet
Specify the Operating State of the Interface
Disable Host Route
Set RIP-2 Route Aggregation
Set RIP-2 Packet Authentication
Configure Split Horizon
Configure RIP to Import Routes of Other Protocols
Configure Default Cost for the Imported Route
Set the RIP Preference
Set Additional Routing Metric
Configure Route Filtering
RIP 67