Understanding Types of Interference
Recall from Chapter 3, “RF Signals in the Real World,” that APs can interfere with each other. If two APs are configured to use the same channel and are in close proximity to each other, co-channel interference results. If the APs are set to use adjacent or overlapping channels, adjacent channel interference occurs.
While those types of interference can certainly be destructive, they involve devices that are based on the 802.11 standard. For example, each access point (AP) transmits on a specific channel (possibly the wrong one!), uses a standardized channel width, and always transmits frames in the 802.11 format. As well, each AP should also follow the 802.11 rules for clear channel assessment (CCA) to maintain ...
Get CCNA Wireless 640-722 Official Cert Guide now with the O’Reilly learning platform.
O’Reilly members experience books, live events, courses curated by job role, and more from O’Reilly and nearly 200 top publishers.
