Configuring Rip; Rip Startup And Operation - H3C SecPath F1800-A Operation Manual

Operation Manual - Network and Routing Protocol
H3C SecPath F1800-A Firewall

4.1.2 RIP Startup and Operation

The whole process of RIP startup and running can be described as follows.
When RIP is just enabled on a router, request packet is forwarded to a neighbor
router in broadcast mode. After the neighbor router receives the packet, it will
respond to the request and resend a response packet containing information in
the local routing table.
When the router receives the response packet, it will modify its local routing table
and meanwhile send a modification triggering packet to the neighbor router and
broadcast the route modification information. Upon receiving the modification
triggering packet, the neighbor router will send it to all its neighbor routers. After a
series of modification triggering broadcast, each router can get and keep the
updated routing information.
At the same time, RIP broadcasts its routing table to the adjacent routers every
30 seconds. The adjacent routers will maintain their own routing tables after
receiving the packets and will select an optimal route, and then advertise the
modification information to their adjacent networks so as to make the updated
route globally known. Furthermore, RIP uses the timeout mechanism to handle
the timeout routes so as to ensure the real time and validity of the routes.
RIP is adopted by most of IP router suppliers. It can be used in most of the campus
networks and the regional networks that are simple yet extensive. For larger and more
complex networks, RIP is not recommended.

4.2 Configuring RIP

You must enable RIP before configuring other functions and features, except
configuring interfaces. You should note that the interface parameters related to RIP
will become invalid when you close RIP.
The PIP configurations include:
Enabling RIP and entering RIP view
Enabling RIP interface
Configuring unicast of a packet
Specifying RIP version of an interface
Configuring zero field checking over interface packets
Specifying the operating state of the interface
Disabling host route
Configuring route aggregation
Configuring packet authentication
Configuring split horizon
Importing routes of other protocols
Configuring default routing metric
Setting the RIP preference
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Chapter 4 RIP Configuration