new ccna certification 2020

new ccna certification 2020.Point-to-MultipointFigure 4-9 Point-to-Multipoint Wireless Bridge TopologyFor the endpoints of a point-to-multipoint topology to communicate with each other, they must do so through a hub. Cisco offers the Cisco Aironet 1300 Series Wireless Bridge and the Cisco Aironet 1400 Series Wireless Bridge. When using the 1400 Series, only the network can be bridged, but with the 1300 Series, in addition to bridging the network; clients can also be connected. The 1300 series is used in the 2.4GHz range and the 1400 series is used in the 5GHz range.4. outdoor meshWe can see that a bridge is a good way to connect remote sites. However, suppose that in a point-to-multipoint topology, congestion is occurring at the central site. Who will be harmed? Just the central site? Only the remote sites? Neither; the answer is all sites. The central site is very important when two remote sites are communicating through the central site.Figure 4-10 shows the scenario assuming a failure at the central site. Figure 4.10 Wireless Bridge ProblemFigure 4-8 Point-to-point wireless bridge topologyThe main problem that needs to be addressed now is that the remote sites cannot communicate with each other, or with the central site. The solution is to deploy a mesh, as shown in Figure 4-11. The mesh solution is suitable for situations where connectivity is critical, due to the fact that multiple paths can be used. IEEE is currently working on making46 Chapter 4 Wireless LAN Technologies and Topologies mesh standard (802.11s). However, discussed here is the Cisco solution using wireless controllers4:3 Pro Forma Tasks 45