Certification Overview

Cisco positions Cisco Certified Design Expert Specialist – Large Scale Networks as evidence that a candidate can translate technical or business knowledge into repeatable workplace performance. Its scope centers on expert architecture for very large networks, emphasizing scale, convergence, resiliency, hierarchy, segmentation, control planes, operations, and evolution. The active requirements are deliberately tied to Cisco's current technology and service portfolio, so preparation should combine conceptual study with configuration practice, scenario analysis, or workflow rehearsal as appropriate. Key coverage includes Business strategy, design methodology, and requirements, Control, management, data-plane, security, and service design, Network architecture analysis, trade-offs, evolution, and validation, Scenario-based analysis of complex network requirements, Architecture choices, constraints, trade-offs, and design evolution, Core design content plus one selected elective area.

The credential is most relevant to senior network architects, principal design engineers, and technical strategy leaders specializing in large scale networks. It can support entry into a new discipline, formalize experience already gained on the job, or document a specialization inside a broader Cisco certification path. Employers can use it as one signal that a practitioner understands Cisco terminology, recommended operating models, and the trade-offs involved in delivering reliable outcomes. It does not replace hands-on experience, but it supplies a structured benchmark against a published exam or program blueprint.

The earning rule is straightforward: Pass the 400-007 CCDE v3.1 written exam, then pass the CCDE v3.1 practical exam with the Large Scale Networks elective. No formal prerequisites. Cisco nevertheless recommends that candidates build the practical background described in this document before attempting the requirement. Preparation should begin with the active blueprint, then proceed through Cisco training or equivalent study, guided labs, documentation review, and timed practice. Candidates should verify the exam appointment details in the registration system because taxes, currency conversion, local delivery availability, and version transitions can affect the final booking.

From a career perspective, the certification maps to Networking, Enterprise & Governance and the selected level is Expert Level. After earning it, holders should retain their score report, monitor the credential in Cisco's certification tracking system, and understand any expiration or renewal rule before the renewal window becomes urgent. Cisco updates exams as technologies evolve; therefore, candidates close to a published transition date should compare the active and announced blueprints and schedule against the version they intend to take.

Track Details & Exam Requirements

Certification provider: Cisco

Credential type: Expert specialist certification

Current status: Active

Research currency: Checked against Cisco-controlled certification and exam information on 25 August 2026

Official earning rule: Pass the 400-007 CCDE v3.1 written exam, then pass the CCDE v3.1 practical exam with the Large Scale Networks elective

Formal prerequisites: No formal prerequisites

Recommended background: Cisco recommends five to seven years of network architecture, design, or senior pre-sales experience

Exam 1 — 400-007 CCDE: Cisco Certified Design Expert Written Exam

Path position: Required qualifying written exam

Exam version: v3.1

Exam status: Active

Duration: 120 minutes

Price: US$450

Languages: English

Delivery: Secure, proctored exam through Pearson VUE, online or at an authorized test center where available

Number of questions: 90–110 multiple-choice questions

Passing score: Not officially specified

Skills measured: The active Cisco blueprint covers:

• Business strategy, design methodology, and requirements
• Control, management, data-plane, security, and service design
• Network architecture analysis, trade-offs, evolution, and validation

Exam 2 — CCDE Practical: Cisco Certified Design Expert Practical Exam

Path position: Required practical exam with the Large Scale Networks elective

Exam version: v3.1

Exam status: Active

Duration: 8 hours

Price: US$1,600

Languages: English

Delivery: Eight-hour Cisco expert lab or practical examination delivered at a Cisco-designated testing location

Number of questions: Not officially specified

Passing score: Not officially specified

Skills measured: The active Cisco blueprint covers:

• Scenario-based analysis of complex network requirements
• Architecture choices, constraints, trade-offs, and design evolution
• Core design content plus one selected elective area

Additional requirement details

• The specialist award is tied to selecting and successfully completing the Large Scale Networks elective during the CCDE practical.
• The minimum listed examination fees are US$2,050 before travel, taxes, regional adjustments, or retakes.

Registration, results, and tracking

• Create or use a Cisco account and keep the legal name aligned with the government-issued identification used for the appointment.
• Register through Cisco's authorized delivery workflow; Pearson VUE administers Cisco proctored written exams, while expert practical exams use Cisco-designated lab delivery.
• Grading is pass/fail. Cisco states that results for proctored written exams are generally available online within 48 hours; practical result timing follows the applicable lab program.
• Use Cisco's certification tracking environment to confirm exam history, credential status, expiration dates, and available digital certification records.
• A failed entry, associate, professional, specialist, or CCDE written exam normally requires a five-calendar-day wait; expert lab/practical retakes normally require 30 days. A passed exam generally cannot be repeated for 180 days.

Current update

No announced retirement or replacement was identified on Cisco's current certification pages as of the research date.

Validity & Recertification

Validity period: Three years from the date the certification is earned

Continuing Education requirement: 120 Continuing Education credits, or another eligible Cisco expert recertification route

Renewal method: Renew before expiration by meeting Cisco's current eligible examination or Continuing Education requirements

Renewal timing: Complete all eligible requirements before the credential expiration date; no extension should be assumed

If the credential expires: Complete the full current earning process again unless Cisco's rules for this specific credential state otherwise

Reminder and recordkeeping: Keep the Cisco account email current and monitor the certification tracker; reminder delivery is helpful but remains the holder's responsibility