Interior gateway protocols (IGPs) are used to dynamically configure routers in an autonomous system (AS). Exterior gateway protocols (EGPs) are used to communicate between IGPs; one example is Border Gateway Protocol (BGP).
The two IGPs discussed in this book are Routing Information Protocol (RIP) and Interior Gateway Routing Protocol (IGRP), which is a Cisco proprietary dynamic routing protocol. To pass the CCNA exam, you must know the protocols discussed in this objective.
Exam Essentials
Remember what an AS is.
An autonomous system (AS) is a group of routers that share the same routing information.
Understand the difference between RIP and IGRP.
RIP uses only hop counts in determining the best route to a destination network. IGRP can look at bandwidth, load, reliability, MTU, and hop count to find the best route to a destination network.
Key Terms and Concepts
Interior Gateway Routing Protocol (IGRP)
A proprietary Cisco distance-vector routing algorithm.
metric
The distance or weight of a link. This value can be used to find the best path to a remote network.
Related posts:
- Problems that Each Routing type Encounters When Dealing with Topology changes and Techniques to Reduce the Number of Problems
- RIP Routing Protocol
- Problems in Routing Topology
- Functions Performed By ICMP
- Benefits of Network Segmentation With Routers
- TCP-IP Network-layer protocol
- Configure Standard Access Lists to Figure IP Traffic
- Access List Operations on the Router
- Function of the MAC Address
- TCP-IP Network-layer protocol Exam Points
