Cisco ASA Audit Event: 210005

210005: LU allocate connection failed

Cisco ASA is a security device that provides the combined capabilities of a firewall, an antivirus, and an intrusion prevention system. It also facilitates virtual private network (VPN) connections.It helps to detect threats and stop attacks before they spread through the network.

Message: %ASA-3-210005:LU allocate secondary (optional) connection failed for protocol[TCP|UDP] connection from ingress interface name:Real IP Address/Real Port to egress interface name:Real IP Address/Real Port.

Event 210005 is generated when Stateful Faliover is unable to allocate a new connection on the standby unit. This might be caused by insufficient available RAM memory.

How could you resolve this situation?

Check the available memory using the 'show memory'command. If there is no available memory, add more physical memory to the ASA.

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