Background: Know: Recognize:
Choice of MediumEdit
- This slide defines about the choices of mediums we have available in the physical layer layout.
- There are two mediums discussed here, wireless & wired medium.
- Illustrates the communication stack review step by step.
1. Wired Mediums:
Usually involves the wires or fibre optics.
Affects the management system due to some factors opex, capex etc.
Involves some initial cost and some heavy equipment that makes the system a bit saturated and complex. (A lot of connections/points/connectors)
Wired mediums need access to services in order to support the NM, for example topology.
2. Wireless Mediums:
Good to install.
Uses radio frequency bands. Mostly 2.5 & 5 GHz industrial, scientific, medical radio bands.
Provides good broadcast but peer to peer connection is needed most of the time.
Some problems with these wireless medium can be reported such as , noise, interference , obstacles etc.
Omni directional antennas can also be a good example to illustrate transmitting/receiving bugs in wireless medium.