The SDN controllers must be configured as a cluster in active/active mode to preserve any information necessary to determine cause of a system failure and to maintain network operations with least disruption to workload processes and flows.

From SDN Controller Security Requirements Guide

Associated with: CCI-001665

SRG-NET-000236-SDN-000365_rule The SDN controllers must be configured as a cluster in active/active mode to preserve any information necessary to determine cause of a system failure and to maintain network operations with least disruption to workload processes and flows.

Vulnerability discussion

Failure in a known state can address safety or security in accordance with the mission needs of the organization. Failure to a known secure state helps prevent a loss of confidentiality, integrity, or availability in the event of a failure of the SDN controller. Preserving network element state information helps to facilitate continuous network operations minimal or no disruption to mission-essential workload processes and flows.

Check content

Review the SDN controller configuration to determine if it is configured to peer with one or more controllers in an active/active failover mode. If the SDN controller is not configured to be deployed as a cluster in active/active mode, this is a finding.

Fix text

Configure the SDN controller to peer with one or more controllers in an active/active failover mode.

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