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Wanna have some tips ? CCO is your friend!

A lot of people are asking me about some hints and tips for the wireless lab exam.
I can summarize some tips/hints, but those are personal and tt’s possible those tips won’t work for you.
All the tips below are general ones and hopefully you’d read them already somewhere on the Internet.

Preparation tips :
– Read the recommended reading list serveral times.
– Configure every wireless technote you can find. (See links)
– Know every command of the AP and WLC without using the “?” at the CLI.
– Try to know everything what’s described at the Blueprint.
– Yes, VLAN and QOS are at the blueprint, so you’ll have to know this.
– Start with “clean” configuration each day, so you will have to configure everything over and over and over again.
– Write a blog. It’s easy to find something when you can’t remember something.
– Don’t think you know something…. Just configure it, configure it and configure it again. If you can reproduse it three times without any fault, there is a possibility you know the stuff.
– CCO is your friend.
– Don’t trust any configuration ! Verify it and then when it’s working, trust it….

Some general tips :
– Make sure you get enough rest before the lab.
– Timemanagement is also very important. Try to have a strategy in advance and stick to it.
– Don’t worry about the Open Ended Question. Know the books of the reading list and make sure you got enough experience with the devices.
– Redraw the topology at layer 2 and layer 3 in a way it’s easy for you.
– Read the whole exam before you start. Try to find some connections between some questions.
– Ask the proctor about clarification if you don’t understand a question.
– Save your configuration frequently. (In my case, very very often…..)
– Try to enjoy your lunch… It can be a very expensive one.. 😉

It doesn’t matter if you fail a lot of times for the lab… The only thing that counts is when you pass the lab…
If I can pass the lab, so can you !
Be very very motivated…. That’s the most important thing to succeed.

Is it possible to pass for the lab ?

Well… It’s possible ! Why I know this ? Because I just passed for the lab..
Finally CCIE Wireless…

Some good tips :
– Don’t rely on this blog. There are some mistakes at the articles, but hey.. This blog was for my own purpose…
– Make sure you know the CLI.. For automous and WLC…
– Technotes are your friend.
– Read every recommended book…. Several times….
– Practise, practise and… errr… practise….

What is TSN / RSN

I found a nice page about introduction of 802.1x.

http://tldp.org/HOWTO/8021X-HOWTO/intro.html

Quotes of that page :

WPA is not the long term solution. To get a Robust Secure Network (RSN), the hardware must support and use CCMP. RSN is basically CCMP + 802.1X.

RSN, which uses TKIP instead of CCMP, is also called Transition Security Network (TSN). RSN may also be called WPA2, so that the market don’t get confused.

Basically:

TSN = TKIP + 802.1X = WPA(1)

RSN = CCMP + 802.1X = WPA2

IOS : Configure Replace

Where have I been ????
I didn’t know the command : configure replace, but that’s working fine.

First, save your config to flash:
copy run flash:running_dec.txt
the do your thing on the switch/router
conf t
int g 2/1
Desc ROLLBACK

and if you want to revert back to the old config, without rebooting :

Wifi_6503#configure replace disk0:running_dec.txt
This will apply all necessary additions and deletions
to replace the current running configuration with the
contents of the specified configuration file, which is
assumed to be a complete configuration, not a partial
configuration. Enter Y if you are sure you want to proceed. ? [no]: yes

00:25:30: Rollback:Acquired Configuration lock.
Total number of passes: 1
Rollback Done

Small tips 01

For the lab you’ll have to practise, practise and ofcourse practise….
A good way is to start over and over again on every device.

Erase the devices, make sure you got layer 3 connection (If needed) and then save the config to flash or a tftp server (You can use the WCS for this.)
When the WCS is empty, create a backup which you can use to restore the empty config if needed.

When you want to start with a “clean” AP or WLC, just replace the startup with the file saved at the flash and now you can start over and over again..

This saves you time to reconfigure layer 3 over and over again.. (Yes it’s part of the lab, but this should be known already….)

This site is only for study purpose.

Although I setup this site just for me, there are a lot of people who are looking at my posts…

A Big Thank you to you all, but….

This site is only for studypurpose… It’s possible that there are some faults at configs etc.. But I will change this site with only correct information… Gonna take some time, so please be patient..

1252 and Power

The 1252 can work with 15.4 Watt, but then you got some limitations :

Only single spatial streams, so not faster then 72 mb. (MCS 7)

With full power you can have double spatiel steams, so 144 Mb (MCS 15)

To have the max out of the 1252, make sure you got enough power….