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I am very glade to return back after pausing posting for a while. Actually we were very busy the last few months evaluating, designing and preparing for our company’s backbone migration, a little C Vs J with all its fun
Anyway, while going through the low level design we faced a little confusion when [...]

In this post we are going to cover a nice tool, actually I’ve never used it in production, but I was fully testing it during my CCIE SP lab preparations and wish to share it with you. It’s nice to have such a tool in your tool box when dealing with complex designs.
The VRF Selection [...]

Load-sharing is one of the clumsy areas that is full of confusing parts. In this post we should be covering its ABCs, and latter on we should be covering more parts in details. We chose the name “CEF and load sharing” as the post name due to the main role that CEF plays when talking [...]

Been a while since my last post, I was extremely busy doing a lot of things, anyway I am glade to be back.
This post I am going to cover a nice tool for enhancing IS-IS convergence, I am really amazed by the ideas that the guys out there pop up. Inventing such wonderful tools requires [...]

Team working is all about producing results with a group of people you love working with … Being part of the same team, working together all day long we decided to extend this level of team working from being members of the same team and writing in the same blog to even write this post [...]

Lets continue our BGP performance tuning discussion. Sorry for the long delay but I was deeply busy in some other stuff.
During the last couple of days I’ve attended Cisco Expo 2009, and during the SP – IP Core Technical Breakout, the breakout speaker highlighted Cisco’s high availability features, while focusing on BGP he introduced to [...]

Draft Martini and Draft Kompella were the starting points toward standardizing the Layer2 VPN architectures using pseudowire emulation, both drafts addressed setting up pseudowire emulation over MPLS-based networks in order to offer Layer 2 VPN services, but each draft proposed a different approach. Members of the networking community divided themselves into two camps based on [...]

In this post we are going to discuss both CSC options that we have highlighted in the previous post in details. The two available options are either an ISP customer carrier, or a BGP/MPLS VPN customer carrier.
We are going to conquer the control plane and data plane separately, in order to well understand the complete [...]

After I’ve completely illustrated the Inter-AS MPLS VPN solution with all its options, I’ve decided to cover the Carrier Supporting Carrier with all its options as well.
It was described as Carriers’ Carriers in draft-ietf-2547bis section 9 and followed in the final RFC 4364, and was named Carrier Supporting Carrier by Cisco, and Carrier of Carriers [...]

While doing the final preparations for my CCIE SP track written exam, I reviewed my Inter-AS MPLS VPN posts and I found out that they needed some modifications to be more organized and comprehensive, please revisit the updated posts:
Inter-AS MPLS VPN – The whole story (1)
Option 1(10A): Back-to-Back VRF – Inter-AS MPLS VPN – The [...]