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Showing posts from November, 2012

Useful Win 7 Command for Wireless

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This probably falls into that category: "stuff that everyone else already knows, but I don't", but I thought it was worth jotting down a few notes about.

I recently saw someone tweet about the command: "netsh show wlan <various options>", which I had never heard of before.

After having had a look through the command help screens, it seems an incredibly useful command if you want to quickly find out about the wireless networks and the wireless capabilities of a Windows 7 machine you're working on. Much of the information can be found by poking around in various GUI pages, but this command line utility is much quicker to use and gives a greater depth of information.

I'll just run through a few useful examples and then leave you to poke about in the help pages yourself if you want to know more.

A great way to get a summary of the wireless networks that a Win 7 client can hear is to open a command window (...or a DOS box as I like to call it) and ente…

Your system does not support long mode

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Just a quick note for anyone who may come across a similar issue when trying to deploy server images on to their VMWare environment.

I've been lucky enough to get a new server recently to test various virtual WLCs and management packages that are being put out by various wireless vendors. But after installing ESXi and deploying a couple of server images, when I tried to start the virtual servers up, I kept getting the following messages popping up in vShere:


(For search engine benefit: This virtual machine is configured for 64-bit operating systems. However, 64-bit operation is not possible. Longmode is not possible. Longmode is disabled for this virtual machine)
Also, in the console of the server (Cisco MSE & NCS), I was getting the following reported: "Your CPU does not support long mode. use a 32 bit distribution"
I was concerned that maybe there was an issue with my server CPU, in terms of support for virtualization. 
I rebooted the server and dropped in to the B…

Cisco DTLS License

The whole area around the free DTLS license that can be obtained for Cisco WLCs has always been a bit of a head-scratcher for me.

I'm never sure whether I need the additional license or I already have it to be honest. Anyhow, today on my home lab I tried to have a look at some features which required DTLS between the AP & WLC, only to find that my 2504 did not support the option (the option was grayed out).

After some digging around on the Cisco forums, I found that the following licensing link can be used to obtain the DTLS entitlement license with very little fuss at all:

https://tools.cisco.com/SWIFT/LicensingUI/loadDemoLicensee?FormId=4090

The information to be entered can be found on the WLC inventory page. Only the model number & serial number are required.

Within seconds, I had the license (which can be downloaded directly or sent by email) and applied it to my 2504 (Management > Software Activation > Commands > Install License)