CWAP- Channel Switch Announcement
The Channel Switch Announcement element is used by an AP in a BSS, a STA in an IBSS, or a …
Monthly Archives: October 2014
CWAP – Reassociation Req/Response
Reassociation Request frame sent only by a STA to an AP & used when the STA already associated to the …
802.11 Mgmt : Association Req/Response
When 802.11 authentication (not the RSN-WPA/WPA2 authentication) completes, a STA move to Association phase to the BSS. The purpose of …
CWAP 802.11- Probe Request/Response
Discovering the network by scanning all possible channels & listening to beacons is not considered to be very efficient (passive …
CWAP – 802.11 Ctrl : RTS/CTS
RTS (Request to Send) & CTS (Clear to Send) frames are used to enhance the virtual carrier sense process. It …
CWAP – MAC Header : Duration/ID
Duration/ID field is 2 bytes(16bits) long field in the 802.11 MAC header. Here is the 16 bit of Duration/ID fieldIn …
Free CCIEW Study Materials
I originally started my blog as a place to keep my CCIEW study notes. Since then I started blogging about …
CWAP – HT Control Field
The 802.11n amendment add a 4 byte HT control field to the 802.11 MAC header. With this HT Control field …
CWAP – HT Capabilities IE
802.11n introduces 4 new information elements which can be seen in 802.11n (HT) beacon frames. HT STAs declare themselves as …
CWAP – 802.11n Introduction
802.11n-2009 (HT-Clasue 20) amendment was ratified on September 2009, essentially a list of enhancement to improve the performance & throughput …
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