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Cisco professional level certifications (CCNP, CCNP Wireless, CCDP, CCSP, CCNP Voice, and CCIP) are valid for three years. To recertify, pass ONE of the following before the certification expiration date:
Pass any current 642-XXX Professional level exam, or
Pass any current CCIE Written Exam,
Pass the current CCDE Written Exam, or CCDE Practical Exam, or
Pass the Cisco Certified Architect (CCAr) interview AND the CCAr board review to extend lower certifications.