![]() The speed of the ports on a device may influence the decision to install a particular device. These factors may affect network performance and may be influenced by the factors shown below.Ĭost – the various models of CISCO routers and switches, the choice of router or switch may be influenced by the budget that the organization may have. In our networks, there are several factors that will affect which devices we will install. The image shown below shows a 48 port CISCO switch. ![]() The switch is connected to the router using one of its interfaces so that other networks can be reached through the router. These may be PCs, notebooks, IP phones among others. The switch will be used to connect to the various end user devices in our network. The power button on a router is used to turn on and off the router.The auxiliary port shown as aux port is used as an alternative to the console port. The console port is the main configuration port on a router, and it is where we will connect to the router and issue configuration commands through.The fast Ethernet interface will be used to connect to our LAN networks while the serial interface will be used to connect to the WAN.The figure shown below shows the various ports that can be found on a router as well as explanations on their use. The router should also have interfaces that connect to outside interfaces such as to an ISP. Therefore, when choosing a router, you should consider the number of LANs in your global network. The router has various LAN interfaces that it connects to these segments. Each LAN is usually connected to others using an interface on the router. The routers in our networks are used to interconnect the various LAN networks. The internetwork devices that we will be using in this course will be primarily routers and switches. The choice of which router to deploy is determined by the Ethernet interfaces that match the technology of the switches at the center of the LAN. In this section we will consider the LAN connections and the WAN. There are many considerations to make when planning the network. In this chapter, we will learn how to plan our networks and look at the various cabling options to use in our networks at the end of this chapter, we should also learn how to plan for the IPv4 addressing we will use in our networks. All these concepts lead up to this chapter and beyond. In our previous chapters, we have looked at the OSI and TCP/IP models in detail and explained how they aid in communication. ![]()
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