Category Archives: Cisco Networking

For courses, entertainment and educational purposes.

A study in EIGRP wide-metrics

Posted on 20 November 2020 by pim
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Meraki Wireless 802.1X authentication with RADIUS / Freeradius

Posted on 11 November 2020 by pim
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Mnemonics to help you memorize Network exam trivia

Posted on 18 March 2020 by pim
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A mnemonic for remembering the Cisco Syslog levels

Posted on 10 March 2020 by pim

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

Posted on 25 July 2019 by pim
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Calculating DeciBels for eg Wi-Fi networks and the conversion to mW

Posted on 2 July 2019 by pim

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

Posted on 5 April 2016 by pim

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

Posted on 5 April 2016 by pim

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

Posted on 20 February 2016 by pim

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

Posted on 11 December 2015 by pim

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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