Tag Archives: CCNA

OSPF Part IV

Overview In part 1 and part 2 of this chapter, we looked at the basic configuration of OSPF and further learnt more OSPF concepts such as redistributing the static routes and the metric, in part three, we looked at multi-area OSPF. In part four, we will look at OSPF and multi-access networks, we will conclude […]

EIGRP part II

Overview In part 1 of EIGRP, we explored some of the EIGRP concepts, we saw how it works and how routes are learnt, we also looked at the tables in EIGRP as well as the algorithm used and the different packet types. We also configured EIGRP and verified operation using the various show commands. in […]

Dynamic routing protocols

Overview In the previous chapter, we looked at static routing. We saw how the router finds the best path to a network. We configured static routes and traffic was able to flow between two points. In this chapter, we will give an overview of dynamic routing protocols. We will define them and learn how they […]

Data link layer, Ethernet and physical layer

Overview In the previous chapters, we learnt about the application layer and transport layer port communication, we also looked at the network layer and IPv4 addressing for remote delivery of packets. In this chapter we look at the data link layer and discuss how it prepares packets for transport over different types of media and […]

Application layer

Overview As I am sure, most of you use the internet in a number of ways; be it browsing the web, downloading movies, financial transactions, blogging, IM messaging among others. We are most likely oblivious of what it is that makes this communication possible. In this chapter, we will look at the first layer of […]

TCP/IP and the OSI Model

Overview In the previous chapter we were introduced to computer networks and we got to know their importance in everyday lives. In this chapter, we will look at the layered models that are used in communication over networks. We will discuss the TCP/ip model and the OSI model to better understand how communication works. This […]