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Collaboration Engineer

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

Author: Andres Sarmiento

Hi there, just a bit about myself, I have been in the IT business for the last 10 Years. Started my way up as a Help Desk Technician, studied really hard since then and moved up a bit to a Jr. Network Administrator to a Sr. Network Administrator. Few years later started with this obsession to star working for a IT services company and for the last 3 years I have worked for couple Cisco IT Resellers, and now I work for Cisco as a contractor (Red Badge), for the Advanced Services Team. I have learned from basic network design to high scale network designs, I started on the networking side, with a bit of Security, some Wireless and Data center technologies. However my main focus has always been Voice/UC/Collaboration. I think that these technologies are cool to implement and very challenging from time to time, which makes them very enjoyable. The main idea of this blog is to be able to post useful information that someone like me on the field can use to their advantage, without having to spend too much time trying to figure stuff up.
Written by Andres SarmientoAugust 3, 2018August 3, 2018

Zero Downtime Upgrades – An upgrade approach to avoid late nights

Let’s see, it has been a while since the last time you heard from me, but this time I will spare you the excuse! What is a Zero Downtime Upgrade? This is an upgrade where no matter from which version of VOS (CUCM, UNITY, and UCCX) you are coming from can be done with very […]

Written by Andres SarmientoMarch 30, 2018May 29, 2018

Consuming the “Cloud” – How are you doing it?

Before leaving my previous company there was an interesting trend in the market and industry I have worked for the past few years, and that is that multiple verticals out there are considering moving their traditional premises workloads to the cloud. That is a beautiful thing, but from my standpoint as an Engineer/Architect, I’m thinking […]

Written by Andres SarmientoFebruary 9, 2018May 29, 2018

The Anatomy of a Call Recording Service – Cisco Unified Communications Manager

Call recording is an interesting topic for me and it’s sometimes hard to understand, but It’s easy when you break it down to get what it is all about. My experience varies from different vendors and most of it comes to the same place, at least when preparing CUCM for Recording services. This post is […]

Written by Andres SarmientoJanuary 23, 2018January 21, 2018

CCNP Security 300-206 (SENSS) – Implement NetFlow IOS-XE with NBAR Discovery

I’m pretty sure that there are many examples out there to create NetFlow configuration and very well documented as well, however, I wanted to give my config a crack and also wanted to share. I’m adding one more bit of information as it is very useful to keep your network on-check, and that is the […]

Written by Andres SarmientoJanuary 22, 2018January 21, 2018

CCNP Security 300-206 (SENSS) – Denial of Service Attack Prevention (IOS)

As part of the CCNP Security 300-206 (SENSS) – I have found interesting topics along the ways and this one catches my attention. So here is a quick high-level overview + some configuration examples on IP TCP Intercept What TCP Intercept is looking to prevent? This feature looks to prevent Denial of Service Attacks, by […]

Written by Andres SarmientoJanuary 22, 2018February 8, 2018

CCNP Security 300-206 (SENSS) – The After Math of the Exam – Useful Links

I finished last year with an incomplete challenge and lots of things in my to-do list. This exam was one of them, so I ended up moving lots of my objectives to 2018 I presented this exam at the beginning of November-17 and failed with few or a lot of incorrect questions. It really took […]

Written by Andres SarmientoDecember 28, 2017May 29, 2018

CUCM – Moving CUCM Publisher – Change IP address

Where do we begin with this one? – Here is your ticket and before you go to the next section of this post, make sure you have a quick answer. The Ticket/Challenge **Trying not to call it a problem! Your client needs to move from a Datacenter to a new location. You need to move […]

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