What is the minimum Red Hat Enterprise Linux version required for Cisco SD‑WAN controller deployment via KVM?
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Correct answer: RHEL 7.5.
Why this is the answer
Cisco SD-WAN controllers, when deployed as virtual machines on KVM, require a minimum of Red Hat Enterprise Linux (RHEL) version 7.5. This specific version ensures compatibility with the necessary KVM features, kernel modules, and libraries that the Cisco SD-WAN software relies on for stable and efficient operation. Older RHEL versions like 4.4, 6.5, and 6.7 lack the required kernel versions, virtualization enhancements, and updated packages necessary to support the modern architecture and resource demands of Cisco SD-WAN controllers. Using an unsupported RHEL version would lead to installation failures, instability, or performance issues.
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