ccna 200 301 book

ccna 200 301 book.Router Interface Any IP-enabled device Serial Serial EthernetProtocol Any IP-enabled device Frame Relay Frame Relay EthernetWAN service commitment Send IP packets Send FR frames Send Ethernet framesVSAT.Finally, note that all of the private WAN services discussed so far in this chapter happen to use some sort of cable. However, in some cases, the sites that need WAN connectivity happen to be in locations where no service provider offers WAN service. Perhaps the site is located in a remote area, such as on a sparsely populated island, where laying an underwater cable would be prohibitively expensive; or perhaps the terrain happens to be in a place where cable is not permitted.316 Chapter 15 Identifying Other WAN TypesIn these cases, a company can establish a private WAN that uses satellite communications and VSAT terminals.VSAT, also known as small-aperture terminals, refers to a satellite receiver, like the ones we typically see that are one meter wide and used for home satellite television. The VSAT receiver is located outside, pointed at a specific satellite and connected to a specific router interface, and the router is located inside the building. Figure 15-5 shows an example of a VSAT receiver on top of a building.Setting up a private WKN with VSAT is a bit like using a leased line and meets an important requirement to connect to a location where there are connection difficulties.SatelliteFigure 15-5 VSAT