This section explains how headless mode enables Cisco NCS 1004 to maintain traffic forwarding during control plane disruptions.
A headless mode is a feature that
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allows the Cisco NCS 1004 to continue forwarding traffic even when the control plane is disrupted,
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provides uninterrupted traffic for up to 72 hours during issues like process restarts, CPU reload, or CPU removal, and
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temporarily limits provisioning capabilities and disables performance monitoring data collection.
Fault propagation continues to operate for failures on client and trunk ports. However, you cannot provision anything nor view operational data with a non-functional CPU. Performance monitoring data based on 15-minutes and 24-hour intervals is not supported with a non-functional CPU.