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Collaboration Engineer

All things Technology – Posts to save for when you need them

Category: Uncategorized

Written by Andres SarmientoNovember 8, 2015February 15, 2017

Install CUCM 9.1 Boot error (Make any Cisco UC CD/DVD Bootable)

Originally posted on The Networker:
Recently I got an ISO image for CUCM 9.1(UCSInstall_UCOS_9.1.2.12900-11.sgn.iso) and I intend to play around with it cause I have a project with a customer and he need to install CUCM on a UCS server. I tried to install it in my VMWare Workstation but I get the following error…

Written by Andres SarmientoAugust 26, 2015February 15, 2017

Multicasting with GNS3 and Virtualbox

Originally posted on Baba AweSam:
There were many times during my CCIE Lab preparation that I wanted to have an actual Multicast server to lab up multicasting but I had always been left with ping to test and troubleshoot multicasting. There were 2 problems to it. The first is that it is a dull and…

Written by Andres SarmientoDecember 30, 2014

2014 in review – Really nice Year report for collabengineer.com

The WordPress.com stats helper monkeys prepared a 2014 annual report for this blog. Here’s an excerpt: A New York City subway train holds 1,200 people. This blog was viewed about 5,700 times in 2014. If it were a NYC subway train, it would take about 5 trips to carry that many people. Click here to […]

Written by Andres SarmientoNovember 13, 2014February 15, 2017

Shellshock-ed

Originally posted on Cisco Collab Engineering Tips:
A vulnerability in bash is affecting all kinds of *nix systems and some Cisco collaboration products are affected.  Cisco has identified the vulnerable software and has either patched or is in the process of building patches. The PSIRT is by far the best place to look for vulnerable…

Written by Andres SarmientoSeptember 11, 2014February 15, 2017

Network backup with Rancid

Originally posted on Garry's notepad:
Introduction One of the most commonly overlooked aspects of network management is the failure to backup network device configurations. Sadly it is only viewed as being a priority after disaster strikes. Fortunately there is a Linux / Unix open source package called Rancid that can get the job done…

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