Category Archive: Tips

Aug 01 – Don’t change your primary email address and how to revert back if you already did

A lot of excitement surrounding the launch of replacing hotmail however if you are too excited you might have used the option of changing you primary email address from to Nothing wrong with it but you will find that

i. when you try to login to or, it will only …

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Jun 24

Best Email App for Android ICS

Well, since I moved form IPhone to Galaxy S3 , I was in constant pursuit to get an email app which shows html emails and can work with Hotmail exchange active sync. The benefit of active sync is that it syncs you calendar, contacts and email at the same time. The problem with native email …

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May 22

Fedora ARM Image Installer–SD Card Selection

I was trying to follow this guide ( to put Fedora ARM image to my SD card which needs to be at least of 2GB capacity. However in image installer window I was not getting the exact option to selection SD as destination device for image. I was getting harddisk1 (8G) instead of anything …

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Mar 18

Connect GNS3 Network to Real Networks / Other GNS3 Network

This posts details how to connect GNS3 network to real networks. you can use this post for various scenarios, in fact whatever you can think of. So, say for example you have a physical router connected to your home network and you want to configure VPN between your router and  ASA (or any other device) …

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Mar 18

Windows 7 as Router

Here is quick way to make work Windows 7 as Router.


1. Click on Start button and Search for ‘regedit’ which a short name of Register Editor in Windows.

Click on picture below see it in bigger size.


2. Once found, click on it to open it.

3. In the newly …

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Mar 15

Cisco MDS 9000 Series AAA Configuration

Here is a sample for Cisco MDS 9000 Series AAA Configuration. There are two parts of it, one is to config ACS Server and Second is to configure the Switch itself. First I am detailing the switch configuration and then the ACS Config.


Switch Configuration

We need some basic knowledge of the setup before …

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Mar 15

Cisco MDS 9000 Key Mismatch Error for SAN-OS Version 3.1 – AAA Config

Though 3.1 is quite old version but still maybe in use on Fabric Switches somewhere on your network. While configuring AAA on these switches you specify Shared Secret key which matches with what you had configured on your ACS / Radius Server. The product documentation states that you can any secret key within certain length …

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Jan 19

Cisco 6500 Ignores NTP Requests

I faced an issue with one of our 6500 series switches where 6500 acting as NTP server was not replying to some NTP client which access the switch on a certain port. The clients accessing the switch on a different port were able to sync OK. The version used on the switch is quite quite old but this …

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Aug 31

E1 Crossover Cable

E1 Crossover I made this cable for my CUCME SRST Lab ( after looking around on web with following config. This cable is used to connect two E1 cards such that CME router will treat this link as an E1 connection from service provider.

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Feb 02

Cisco 3560 IOS Issue

The following IOS version has issue connecting Cisco 7940 phones on it ports. The switch ports were getting error disabled with warning message of 'loopback detected'. The initial thinking was that its being caused by some inline power misconfig but with nothing much to configure power related on switch, it was ruled out. A …

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