CCIEv.3 Wireless

July 2015 Study Plan

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It is day one of the month, hence the best time to plan my study hours. Here is the study plan for July. You can watch my progress as the days go by.

The Red days indicates days when I did not study at all. Let’s face it, we are all human and we have a tendency of being lazy 🙂. Yellow is for days when I did actually study but did not meet the planned number of hours. Finally,Green symbolizes the days when I actually studied the planned number of hours. Dark green (which is no where right now), will indicate the days when I did more than was expected of me.

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Half way through 2015

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We are half way through the year but It feels like the year has just begun. The plans remain unaccomplished, the dreams get bigger by the day but reality is a sad little story :). When I think that am a tad wiser, I get slapped back and realize that am actually stupidier than I thought I was initially. But then again, there is still hope. We are only half way through the year. Giving up is definitely not an option. Head held high. Eyes on the price. It’s time for my mid-year revolution.

Capturing WLAN Packets using WireShark

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If you are studying for CCNP Wireless or CWNP Certification, an essential part of the study process is actually getting to lab it all out so as to understand the concepts. I noticed that my Wireshark output lacked the 802.11 management or control packets while trying to capture Open System Authentication process. This blog will explain how to set up Wireshark for WLAN Capturing so that you do not miss the vital packet exchanges.
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June 2015 Study Plan

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This study plan was inspired by Rasika. Check out his blog. Very informative.

The Red days indicates days when I did not study at all. Let’s face it, we are all human and we have a tendency of being lazy :). Yellow is for days when I did actually study but did not meet the planned number of hours. Finally, Green symbolizes the days when I actually studied the planned number of hours. Dark green (which is no where right now), will indicate the days when I did more than was expected of me. Will that day ever come :(?? Sigh Read the rest of this entry »

CCIE version 3.0 Wireless Summary Notes 1 : IEEE 802.11 Primary MAC Layer Functions Part 2

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Connectivity

To connect, the client must go through the following:

Scanning for networks

Includes passive or active scanning mode (or both). Many vendors use both.

Passive scanning:

  • Client tunes to each channel, listens for a period of time, and monitors 802.11 beacon frames (AP transmits beacons by default every 100 milliseconds on a specific RF)
  • Client records the RSS of the frame and continues scanning other channels.
  • After scanning all RFs, the client decides which AP to join (usually highest RSS or more information eg SNR)

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