Cisco FirewallNAT Stateful Inter-Chassis Redundancy License | High Availability — CON-L1NBD-FLSASR2F

Keep security services available when hardware paths change with Cisco FirewallNAT Stateful Inter-Chassis Redundancy License. This license is built for environments that depend on continuous firewall operation and need stateful behavior across chassis boundaries to reduce session loss during failover events. For infrastructure teams, the value is operational resilience. Instead of treating failover as a full interruption, this licensing model supports a more controlled transition that helps maintain active connections and reduce the impact on users, remote sites, and application traffic. That matters most in networks where security enforcement cannot pause without business consequences. This is a fit for organizations standardizing on Cisco security architectures and looking to justify high-availability design with a license that supports continuity, not just basic connectivity. It is especially relevant where uptime, session preservation, and predictable failover behavior are worth more than lower-cost single-node alternatives. Ideal For High-availability firewall clusters in enterprise data centers Branch or campus security environments requiring session preservation Redundant perimeter designs where failover must minimize disruption Cisco security deployments that need continuity across chassis transitions Why This Product 1 Preserves sessions better than basic failover licensing 2 Supports continuity across chassis transitions 3 Built for high-availability security architectures 4 Reduces disruption in application-sensitive networks