Cisco FLASR1-FWNAT-RED Firewall/nat Stateful Inter-Chassis Redundancy License

Overview
The Cisco FLASR1-FWNAT-RED is a Firewall/NAT Stateful Inter-Chassis Redundancy License that enables high availability for Cisco firewall and NAT deployments. By allowing two chassis to share stateful connection information, this license eliminates single points of failure and ensures uninterrupted traffic flow during hardware or software failover events.

Key Features

• Seamless stateful failover between primary and secondary chassis
• Supports active-active and active-standby redundancy modes
• Preserves NAT translations and security policies during failover
• Integrated with Cisco IOS XE and Cisco Secure Firewall platforms
• Reduces downtime and improves service level agreements

Technical Specifications

• License type: Per-chassis redundancy
• Compatible hardware: Cisco ISR, ASR and Catalyst firewall appliances that support stateful inter-chassis redundancy
• Software requirement: Cisco IOS XE version 16.9 or later, Cisco Secure Firewall software version 7.0 or later
• Maximum concurrent connections supported: 1 million per chassis
• Redundancy protocol: Cisco proprietary stateful failover protocol
• License activation: Smart Licensing or traditional license file

Applications
This license is ideal for enterprises, data centers and service providers that require continuous network security and NAT services. Typical use cases include:

• Branch office connectivity with guaranteed firewall uptime
• Data center front-end security where traffic must never be interrupted
• Service provider edge devices that need to meet strict SLA requirements
• Critical infrastructure environments such as finance, health care and government

By deploying the Cisco FLASR1-FWNAT-RED license, organizations can achieve resilient security posture, maintain session continuity, and protect their networks against unexpected hardware failures.