Overview of Dynamic Routing
Dynamic routing based on a routing protocol to achieve
Dynamic routing features
(1) advantages: reducing administrative tasks
(2) Disadvantages: take up a broadband network
Language used to exchange information between routers
(1) metric: the number of hops, bandwidth, load, delay, reliability, cost,
(2) convergence: all routers have reached a consistent state of the process
Dynamic routing table is formed router
(1) a direct route to the router learn
(2) update cycle to the 30s, the router sends a routing table to neighbors
(3) a few 30s, the second update cycle to again transmit routing table
RIP protocol
(. 1) hop count metric of RIP, the maximum hop count of 15 hops, hop unreachable 16
(2) RIP update time, every 30s sends a routing update message, UDP520 port
(3) RIP routing update message, sending the entire routing table information
The difference between RIP v1 and RIP v2 of
Experiment
according to the following topology, dynamic routing the router to the PC1 and PC2 communicate 
1, set the IP address of the PC
2, provided R1, R2, R3 IP address of each port 
3, the RIP protocol using dynamic routing to the router 
4, the test whether the interworking PC1 and PC2 
were successfully