SCCM CDP to WMI version out

Sorry for the lack of progress until recently but I’ve recently had a lot of more important priorities in life so working on this had to go on hold for a little while. I am hoping in the next few months to release version 1.0 but as on now this is still experimental so should only be used in a lab environment.

Please use the ticketing system on sourceforge to report any issues and add feature requests.

You can get it here:


See here: (work in progress)

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Setting up a Cisco network for video developers Part 2


Welcome to Part 2, this part will provide the background and current topology that is to be replaced, the real fun will start in Part 3. I know you are all impatient to get started configuring switches, routers and servers but I think that the design and the reasons behind the design are as important (if not more so) than the actual configuration. As always I know I am not perfect and all knowing so if from the background and the following tutorials you think I have missed something or could have done something better then please speak up, send me a message via the contact page or leave a comment.


NINet has grown since the last series and now has a floor of approximately 40 developers developing video solutions. The current solution was put together in bits and pieces and is resulting in poor performance and frequent outages. It must be stressed that this is a development network and as such cannot be locked down developers need to be able to connected unmanged switches (much to my irritation) and connect devices at will.

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Setting up a Cisco network for video developers Part 1


This series of tutorials will be similar to my posts on a wireless setup, where I take a real world requirement of mine and fit it to a tutorial about


This series will take an existing flat topology with mixed switches running in L2 and convert it to a Cisco Switch Topology mixing L3 and L2. Then we’ll take a bit of step into the sysadmin side of things where we setup infrastructure servers to support the end users. At the time of this writing, in the real world, this network is up and running however the supporting infrastructure is a lower priority than other work items so it may take a while to filter through to here.

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Capture CDP packets and populate WMI for SCCM

This little gem I wrote will listen to all interfaces on a computer for CDP packets. Once it has looped all the interfaces any packets it has captured are processed and added to WMI.

Using the attached SMS_DEF.mof we can extract that information and place it in SCCM. Anyone who knows what CDP is will see the benefit immediately. For the rest; CDP (Cisco Discovery Protocol), Cisco devices send out CDP packets every 60seconds each packet contains information about the port it was sent from and the sender. In a nutshell if my computer receives a packet then I can tell which switch I am connected to, what port on that switch and a few other bits and bobs about the switch. e.g. In a test environment I have a Cisco switch which connects to a Cisco IP phone which then connects to my computer, when exe runs I get two entries in WMI, one for the phone and one for the Switch.

The use case is that helpdesk  may not know where a user is physically or where they are connected to the network and the user may be experiencing network issues, this would allow a helpdesk tech to locate the switchport  the user is connected to and pass that info to the network team for troubleshooting saving both parties the hassle of tracing cables and also allowing reporting on where a user is plugging in over a period of time.

There is still a bit to be done for this but it does generally work.

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Cisco Wireless AP – VLANs and Multiple SSIDs Part 2


UPDATED 2010-11-23: There were a couple of typos in the code & a few lines in the wrong order. Thanks to Vic for letting me know about them.

Hopefully after reading Part 1 you have a general idea of what is going on. In this part we will do the configuation needed on CS1 and start to configure wlan1. I strongly recommend connecting via the console for this but it should be possible (if you are careful in which order you enter the commands that you could do this over ssh/telnet). During this period wlan1 will be unavailable to the users but wlan2 will be running fine so they shouldn’t notice any down time.

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Cisco Wireless AP – VLANs and Multiple SSIDs Part 1


The purpose of this document is to explain how to setup and Cisco Aironet 1130ag with two SSIDs one for internal users which will authenticate via a radius server and the other for visitors that will use a wpa pass-phrase and will restrict users to Internet access only. This has (hopefully) been written in such a way that even someone with virtually no knowledge of Cisco should be able to read it and deploy a system successfully.

I should add at this point that I am not a Cisco guru in any way shape or form (though I am intending to get a CCNA & CCNP). So (I got my CCNA on the 20th August 2010) If you are and are reading this and happen to notice any bits that could be done better or are just plain wrong please leave a comment.

This is all based on some work that I have done recently, so I’ll give an example infrastructure and match the config to that example.

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