Overview Ip addressing is a very important job network administrators have to accomplish, configuring ip addresses on routers, and other devices can be a challenge especially when the number of devices is many. In this chapter, we will discuss a solution to ip addressing of hosts which is DHCP. We will look at the concepts […]
Overview In part one of this chapter, we looked at the ACL concepts, we discussed how they worked and we topped it off with configuration of standard ACLs. In part 2, we will discuss extended ACLs and other ACL concepts, we will then configure extended ACLs and finish off with troubleshooting ACLs. Extended ACLs With […]
Introduction In the last chapter, we discussed some of the concepts that make the WAN work, we briefly described some of the protocols in the WAN. In this chapter, we will discuss serial links and the physical connections we use. We will then explore the default encapsulation on CISCO routers which is HDLC and finally […]
Introduction In the previous chapters, we have been primarily focused on LAN technologies, however, as an enterprise grows, so does its networking needs. Consider company ABC, they formed in 2010 in New York, however, over the last couple of years they have grown rapidly and they now have three branches, one in Los Angeles, Miami […]
Overview In the previous chapter, we looked at how we can segment a network using VLANs. In this chapter, we will discuss redundancy and how the end devices in the switched network are able to recover from a failure. We will discuss the role of STP in making sure that there are no loops as […]
Overview Welcome to the world of EIGRP. In this chapter, we will look at CISCO’s proprietary routing protocol which is EIGRP. In part 1, we will look at the foundation concepts into distance vector routing protocols operation. We will then look at the EIGRP concepts and get to know how it works as well as […]
Overview In our previous chapters, we have looked at the OSI and TCP/IP models in detail and explained how they aid in communication. All these concepts lead up to this chapter and beyond. In this chapter, we will learn how to plan our networks and look at the various cabling options to use in our […]
Introduction Communication has evolved greatly. Traditional communication methods such as mail have been overtaken by more sophisticated forms. Electronic Communication methods offer higher speeds; more efficiency, reliability, integrity, security; scale across larger geographical areas and require less resources to use. Tools and services such as e-mail, blogs, podcasts, instant messaging, and social networks among other […]