The objective in network design is security availability, scalability and manageability. To achieve these objectives the following needs evaluation in the process of migrating to ECNM:
Replacement of hubs and legacy switching gear to new switching technology at the Building Access layer. Important factors include port density (current and expected), inline power and QoS (IP Telephony).
The Cabling Plant from the Building Access to the Buidling Distribution Layer will carry agregate traffic from end nodes to Building Distribution Switches.
At Building Distribution Layer switches must be Multilayer (Layer-2/Layer-3) switches and selected so that they can handle current Building Access Layer load they can be either fixed or modular chassis. Plan port density for additional Access Layer devices. Plan for redundancy in chassis and connections to Access Layer and Core Layers.
The Campus Backbone must support high-speed data communications between other modules. Size the backbone accordingly and plan on redundancy.
Notes and Notices:
This is a part of my personal BCMSN notes and research to assist myself in learning and understanding the concepts and theory for the BCMSN exam. I learn by making notes reading and writing things down and wish to file them where I can’t lose them. These notes are not to be seen, judged or mistaken for replacements to Cisco recognized and authorized training which I personally support and attend and suggest you undertake if you are going for the BCMSN Certification.
