Before jumping right into configuring Routing Information Protocol (RIP), you need to take a look at routing and make sure that you have a clear understanding of the differences between static and dynamic routing. You should also understand default routes and administrative distances. This section familiarizes you with all of these topics.
Routing is taking a packet from one device and sending it through the network to another device on a different network. If your network has no routers, then you are not routing. Routers are used to direct and transmit traffic to all the networks in your internetwork. To be able to route packets, a router must
have, at a minimum, knowledge of the following:
Destination address
Neighbor routers from which it can learn about remote networks
Possible routes to all remote networks
The best route to each remote network
How to maintain and verify routing information
Exam Essentials
Understand how RIP works in an internetwork. RIP uses hop counts to determine the best route to a network. It has an upper hop-count limit of 15.
Go through the commands to add RIP to your router. To add the RIP routing protocol to your router, go into global configuration mode and type router rip. You then need to add the number(s) of the network(s) for which your router will advertise.
Know how to view the routing table. To view routing tables, you can use the command show ip route or show ip route rip.
Understand what the routing table shows. You must know how to read a routing table. Make sure you can find the hop count, destination network, and next hop router address.
Remember what the arguments are in a static route. To create a static route, use the ip route command followed by the destination network, subnet mask, next hop address, and the metric.
Key Terms and Concepts
distance-vector
A routing algorithm that typically uses hop counts to find the best path to a network. Some of the newer distance-vector algorithms use other variables such as bandwidth, delay, and line speed. RIP uses only hop count.
dynamic routing
Using a routing protocol to discover routes through the network.
hold-downs A method of stopping routing loops by not sending out updates about networks that have gone down.
route poisoning with poison reverse Sets a downed link to the maximum number of valid hops or to infinity.
Routing Information Protocol (RIP)
A routing algorithm that uses the distance-vector method of finding the best path to a network (hop count).
split horizon
A method of stopping routing loops by not sending updates out the same interface through which they were received.
static route
A route manually entered into the router’s configuration
Related posts:
- IGRP Routing Protocol
- Problems in Routing Topology
- Problems that Each Routing type Encounters When Dealing with Topology changes and Techniques to Reduce the Number of Problems
- Benefits of Network Segmentation With Routers
- Function of the MAC Address
- Full and Half-Duplex Ethernet
- TCP-IP Network-layer protocol Exam Points
- TCP-IP Network-layer protocol
- key Frame Relay Terms and Features
- Commands to Monitor Frame Relay Operation in the Router
