A few years ago, I took an SE role covering Higher Education accounts. I quickly realized one of the deficits Cisco has in the CCNA program as it pertains to networks with a certain set of requirements. While the program is jam-packed with great information, there are a few concepts that an administrator may have to deal with that catch them by surprise. Three related topics that aren’t covered in CCNA Routing and Switching are shown below.
This article is meant to serve as a starting point for those who may be very strong with routing and switching but lack the exposure to VRFs, Layer 3 Segmentation, and MPLS. It is a good starting point for new employees that might face this challenge and it will certainly help them gain perspective on these topics.
Introduction to VRFs
- Where to Use a VRF
- VRFing 101, Understing VRF Basics
- VRFing 102, Providing Internet Access With Dynamic PAT
- VRFing 103, Using NAT Virtual Interfaces for Global Reachability
Segmenting Layer 3 Networks with VRFs
- Article 1 – Basic L3 Segmentation with VRFs
- Article 2 – Extending L3 Segmentation with VRF-lite
- Article 3 – Creating a Shared Services VRF
- Article 4 – VRF-lite in a DMVPN Network
- Article 5 – Stateful Inter-Vrf connectivity
Introduction to MPLS
- MPLS Intro Series – Destination Routing
- MPLS Intro Series – Understanding a Simple LSP
- MPLS Intro Series – Introduction to VPNv4
- MPLS Intro Series – VPNv4 Packet Walk
- MPLS Intro Series – Customer Connection with BGP
- MPLS Intro Series – Route Reflectors
Disclaimer: This article includes the independent thoughts, opinions, commentary or technical detail of Paul Stewart. This
may or may does not reflect the position of past, present or future employers.