Overlay MPLS over provider backbone

Imagine that you have two or more sites which you want to connect together using MPLS technology. You cannot afford dark fiber and your Service Provider cannot offer you L2 connections of any kind. The only thing your SP can offer is L3 transport. Still, you want to build your own MPLS environment and there … Continue Reading ››

MSFC, PFC and DFC on Cisco 6500 series

If you are in routing and switching industry, it's almost impossible not to hear words like MSFC, PFC and DFC in relation with Cisco Catalyst 6500 series, chassis, supervisor and modules. If you didn't yet, you're not almost there, working with large enterprise environments. Even if I see an increasing use of … Continue Reading ››

[Twitter IT] Cisco Live 365 – Cornerstones of CCIE Success

Cisco Live 365 describe this as:
"Anthony Sequeira, CCIE, CCSI educates students on four key cornerstones for success in the journey to CCIE. These cornerstones include technical knowledge, study and lab strategies, proper mindset, and physical wellness."
I can tell you it's not essentially a technical knowledge session, and Anthony Sequeira mention this couple … Continue Reading ››

[Solution] Speed / Duplex auto-negotiation fails between Cisco and Tandberg

In the last weeks I was working closely with a Cisco Telepresence team to identify a issue regarding poor performance of the video systems. We did find pretty quickly the issue as being the failure of auto-negotiation of Speed and Duplex on the connection between Cisco switch port and Tandberg endpoint devices. This was the … Continue Reading ››