{"id":17506,"date":"2026-11-10T18:23:01","date_gmt":"2026-11-10T18:23:01","guid":{"rendered":"https:\/\/dmsretail.com\/RetailNews\/safeguard-your-wan-from-quantum-threats-part-2-the-cnsa-2-0-blueprint\/"},"modified":"2026-11-10T18:23:01","modified_gmt":"2026-11-10T18:23:01","slug":"safeguard-your-wan-from-quantum-threats-part-2-the-cnsa-2-0-blueprint","status":"publish","type":"post","link":"https:\/\/dmsretail.com\/RetailNews\/safeguard-your-wan-from-quantum-threats-part-2-the-cnsa-2-0-blueprint\/","title":{"rendered":"Safeguard Your WAN from Quantum Threats, Part 2: The CNSA 2.0 Blueprint"},"content":{"rendered":"

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Encrypted data traversing your WAN today is already vulnerable to future quantum decryption. Cisco\u2019s new CNSA 2.0 blueprint for Cisco 8000 Series Secure Routers delivers a practical, standards-based path to safeguard your routing infrastructure against harvest now, decrypt later (HNDL) attacks.<\/p>\n

In his Cisco Live keynote, Chuck Robbins noted, \u201cQuantum is the next major technology disruption.\u201d In almost every post-quantum cryptography (PQC) session I lead with network architects, that reality dominates our discussion: the security risks are arriving before the actual rewards of quantum.<\/p>\n

In Part 1 of this series<\/span>, we explored how threat actors are executing HNDL attacks\u2014stealing encrypted data today and waiting for the day when a cryptographically relevant quantum computer (CRQC) can break it, often called \u201cQ-Day\u201d. The goal for enterprise networks must be a full transition to PQC.<\/p>\n

Under the National Security Agency\u2019s Commercial National Security Algorithm Suite 2.0 (CNSA 2.0)<\/span> mandate, national security systems must ensure all new purchases are quantum-safe by 2027, with a full transition by 2031. While this mandate directly governs federal networks, it sets the de facto<\/em> timeline for commercial enterprises\u2014especially across finance, healthcare, utilities, and transport where data confidentiality and hardware longevity must span decades.<\/p>\n

Your blueprint for quantum resilience<\/h2>\n

To help organizations navigate this transition, Cisco is introducing the industry\u2019s first comprehensive blueprint for quantum resilience on Cisco 8000 Series Secure Routers (Figure 1).<\/p>\n

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Figure 1. Cisco multilayered quantum defense: Hardware root of trust \u2192 control and data plane communications across secure WAN<\/h6>\n

Every network layer that relies on classical public-key cryptography (RSA and elliptical curve) must modernize. Our blueprint delivers an unbroken chain of trust across three core pillars:<\/p>\n

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  1. Hardware root of trust:<\/strong> Securing the foundational bootloader and operating system from initial device power-on.<\/li>\n
  2. Control and data plane encryption:<\/strong> Protecting transit traffic against passive eavesdropping and HNDL interception.<\/li>\n
  3. Crypto-agility and visibility:<\/strong> Practical phased migration and end-to-end visibility to audit, track, and verify cryptographic posture in real time.<\/li>\n<\/ol>\n

    Built strictly on open NIST and IETF standards, this architecture delivers market-leading quantum protection with full multivendor interoperability across the entire enterprise routing stack covering platforms, products, protocols, and applications.<\/p>\n

    Comprehensive post-quantum capabilities in IOS XE<\/h2>\n

    Starting in Cisco IOS XE software releases 26.1 and 26.2, we have integrated the latest NIST-standardized algorithms directly into the protocols your WAN relies on every day:<\/p>\n

    ML-KEM (FIPS 203) encryption for data in transit<\/em><\/strong>\u00a0<\/em><\/h3>\n

    To protect data in transit against HNDL attacks, Cisco has implemented the Module-Lattice-Based Key-Encapsulation Mechanism (ML-KEM). This ensures quantum-safe key exchanges across a comprehensive suite of WAN and management protocols, including:<\/p>\n