Category Archives: CCNP

Create hosts file for script on linux

Posted on 9 October 2024 by Robert

When creating a script to retrieve information from network nodes, you need a list of node to retrieve information from. Maintaining a hostfile manually is tedious and cumbersome work. Therefore I choose to get information from dns. Provided dns is … Continue reading →

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Fietsen in Amsterdam

Posted on 15 July 2023 by Robert

Fietsen in Amsterdam, dan heb je een deathwish. Mensen ‘uit de polder’ zijn gemakkelijk te herkennen die stoppen voor stoplichten. Amsterdamse kamikaze fietsers weten dat ze voor de wet de meeste bescherming genieten. Om van ebike’s nog te zwijgen. De … Continue reading →

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SFP Optic values on Juniper

Posted on 28 June 2023 by Robert

ninja@someswitch> show interfaces diagnostics optics ge-1/2/0   Physical interface: ge-1/2/0    Laser bias current                        :  8.132 mA    Laser output power                        :  1.0960 mW / 0.40 dBm    Module temperature                        :  26 degrees C / 78 degrees F    Module voltage                            :  3.3800 V … Continue reading →

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TCL/Expect read from file (executing custom config in bulk)

Posted on 16 June 2022 by Robert

At this point in time I need a nifty little tool to configure some ports on network devices. But the challenge is that the ports differ from device to device. In order to do this I have to create a … Continue reading →

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PDF tools on Ubuntu

Posted on 4 May 2022 by Robert

Ubuntu is my preferred operating system. I even use this OS on my work computer. This choice has some minor down sides. Most business software is developed for windows environments. But fortunately most commercial software on windows has an opensource … Continue reading →

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European situation – Special military operation

Posted on 7 April 2022 by Robert

My father was born in 1935. He lived his childhood in Rotterdam. As a 5 year old he expirienced firsthand the invasion of German troops of his beloved city. The expirience of the entire war that followed, hunted him for … Continue reading →

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Laptop battery status

Posted on 7 April 2022 by Robert

Recently the battery of my laptop is play up. It is constantly hungry for a powercord. And this is not the reason why I am using a laptop. The battery health was rapidly declining. So I installed a new laptop … Continue reading →

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lstty: list tty interfaces on linux

Posted on 7 March 2022 by Robert

I found this little script on internet to get a list of all the usb connected devices. Unfortunaltly this script provides too much information for what I need it to do. Original script can be found on : https://unix.stackexchange.com/questions/144029/command-to-determine-ports-of-a-device-like-dev-ttyusb0 Pay … Continue reading →

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Bash: IF shorthand

Posted on 22 February 2022 by Robert

We all know how to make an if then else decision in programming or scripting languages. In bash , and most other languages it is possible to reduce several lines of code to a one-liners. Lets call that short-hand. A … Continue reading →

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First Hop Redundancy Protocol – HSRP

Posted on 22 December 2017 by Robert

Cisco proprietary HSRP protocol is a protocol for enabling a first hop fault tolerant router. Enabling your default gateway ip address to ‘live’ on more than one router. Back in the old days you had one router to exit a … Continue reading →

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