I am currently studying for the CCDE exam. Elaine Lopes is the program manager for the CCDE and CCAr certification. I’ve had the pleasure of interacting with her online and meeting her at Cisco Live as well. The CCDE is
Service Provider IPv6 Deployment
These are my study notes regarding IPv6 deployment in SP networks in preparation for the CCDE exam. Drivers for implementing IPv6 External drivers SP customers that need access to IPv6 resources SP customers that need to interconnect their IPv6 sites
Design Considerations for North/South Flows in the Data Center
Traditional data centers have been built by using standard switches and running Spanning Tree (STP). STP blocks redundant links and builds a loop-free tree which is rooted at the STP root. This kind of topology wastes a lot of links
Introduction to Storage Networking and Design
Introduction Storage and storage protocols are not generally well known by network engineers. Networking and storage have traditionally been two silos. Modern networks and data centers are looking to consolidate these two networks into one and to run them on
CCDE – Next Generation Multicast – NG-MVPN
MVPNs have been lacking support for MPLS encapsulation. NG-MVPN supports the use of MPLS encapsulation and provides a lot of different profiles. When is a profile suitable and which one should you choose?
OSPF Design Considerations
Introduction Open Shortest Path First (OSPF) is a link state protocol that has been around for a long time. It is geneally well understood, but design considerations often focus on the maximum number of routers in an area. What other
A Quick Look at Cisco FabricPath
Cisco FabricPath is a proprietary protocol that uses ISIS to populate a “routing table” that is used for layer 2 forwarding. Whether we like or not, there is often a need for layer 2 in the Datacenter for the following
Network Design Webinar With Yours Truly at CLN
I’m hosting a network design webinar at the Cisco Learning Network on Feb 19th, 20.00 UTC+1. As you may know, I am studying for the CCDE so I’m focusing on design right now but my other reason for hosting this
STP Notes for CCDE
These are my study notes for CCDE based on “CCIE Routing and Switching v5.0 Official Cert Guide, Volume 1, Fifth Edition” and “Designing Cisco Network Service Architectures (ARCH) Foundation Learning Guide: (CCDP ARCH 642-874), Third Edition“, “INE – Understanding MSTP”
QoS Design Notes for CCDE
Trying to get my CCDE studies going again. I’ve finished the End to End QoS Design book (relevant parts) and here are my notes on QoS design. Basic QoS Different applications require different treatment, the most important parameters are: Delay: