The CCDP certification indicates advanced or journeyman knowledge of network design.
With a CCDP, a network professional can design routed and switched networks involving LAN, WAN, and dial access services, applying modular design practices and making sure the whole solution responds optimally to the business and technical needs and is designed to be highly available.
This certification is intended for mid-level network engineers involved in the network design, planning and implementation.
Valid CCNA and CCDA or any CCIE Certification can act as a pre-requisite.
CCDP certifications are valid for three years. To re-certify, pass any 642 exam that is part of the professional level curriculum after 01/01/06. Or pass any current CCIE written exam.