Udemy offline

Here’s another cool and helpful thing I just discovered that might help you stranger of the internet. Recently I joined a class on Udemy.com, and because I have other tasks at the moment and can’t dedicate 100% to it, I wanted to download the videos so I started looking for ways how to do it. The official answer is that they don’t have anything against it, but it depends on the instructors....

December 5, 2017 · 2 min · 283 words · costin

Quagga

After having some interviews where I’ve been asked about routing on linux solutions, I’ve decided to playaround with Quagga. As always, you can find all the info already on the internet. And in my case Brian Kletter had all the necessary info to setup the environment. Here’s the link on how to setup a linux server with quagga software. And here the initial setup for quagga. For this lab I’ve decided to get familiar with the syntax first and capabilities and then to test a quick ospf scenario....

December 1, 2017 · 2 min · 392 words · costin

How to create text files on Cisco routers

In case you will need it, here’s a thing that helped me out once. In case you want to append some config lines that you have stored in a file and if you can’t copy it through SFTP, you can make it locally. To do this you need to start tclsh and create the file puts [open "flash:filename" w+] { now don’t press enter but just paste in your config lines and then } and ENTER....

August 7, 2017 · 1 min · 132 words · costin

Password recovery procedure on Cisco Catalyst 3500-XL

Just got a used Catalyst 3500-XL switch and don’t have credentials? Did you forget your auth credentials or you just want to have fun? Accessing a Cisco switch when you don’t have the right credentials is hard but not impossible. If you have issues connecting the console cable, try to install the drivers first. This will work only if you have access to the box itself. If so, you’ll need to connect a rollover cable and follow the instructions:...

August 7, 2017 · 4 min · 680 words · costin

Cisco guest shell

So, it seems that finally Cisco decided to introduce a shell for their routers. I know this already exists for their FirePower plaform, but from my knowledge, they just made it available for routers. Enabling the shell To enable the feature we simply have to enable iox and then we can enter linux land with guestshell CSR01(config)#iox CSR01(config)#do guestshell [[email protected] ~]$ Dohost command dohost permits you to run IOS commands from your shell terminal....

July 7, 2017 · 2 min · 305 words · costin