Category Archives: Cisco Networking

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Mnemonics to help you memorize Network exam trivia

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A mnemonic for remembering the Cisco Syslog levels

If you, like me, find that you are struggling with all the Cisco nutty details that you are required to learn from heart for your exam, then of course having a mnemonic can help you achieve just that. So I … Continue reading

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Subnetting 101

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Calculating DeciBels for eg Wi-Fi networks and the conversion to mW

When calculating DeciBels, bear in mind that it is always a comparative number, eg output as compared to input power. This can be used to compare aerial’s etc. Here are examples of typical dB values: 0dB  =   same power 3dB =      2 *  power … Continue reading

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Configuring an VMPS server with FreeRadius

Note: this setup is probably the WORST documented peace of Open Source software I have come across and all forums times I have found on it are of people struggling with it. So here goes.. “how do I use Freeradius as … Continue reading

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To configure a freeradius server for a cisco switch with DOT1X

0. First make you have a working FreeRadius server running and all is jolly. For details, see my previous post “To configure a freeradius server for a cisco switch”. 1. On the FreeRadius server, add a Dot1X Port-user in /etc/freeradius/users … Continue reading

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A simple overview of OSPF Area Types

For some reason or another.. I never came across a simple overview of the different OSPF areas. So I made one.. if you like it (or NOT!) feel free to respond.

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Cisco IOS and Configuration Archiving

If you were under the impression that only Juniper has a nice revision system for archiving configurations… think again and behold a not very well known feature in IOS: configuration archiving…

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TDR functionality within Cisco IOS high-end Switches

  This document introduces a nice features in IOS that is not very commonly know: a time domain reflectometer functionality on the SwitchPorts!

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A fresh look on Anycast Addressing..

explanation-anycast

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