Cisco FLSASR1-FWNAT-R Firewall/nat Stateful Inter-Chassis Redundancy License

Overview

The Cisco FLSASR1-FWNAT-R is a Firewall/NAT Stateful Inter-Chassis Redundancy License designed to provide continuous security service across a pair of chassis in a high-availability deployment. By enabling stateful failover, the license ensures that active sessions are preserved when one chassis fails, minimizing disruption to users and applications. This solution is ideal for enterprises and service providers that require seamless protection and uninterrupted traffic flow in mission critical environments.

Key Features

• Stateful inter-chassis failover for firewall and NAT functions
• Preserves active sessions during chassis switchover
• Supports Cisco ASR 9000 series platforms
• Integrated with Cisco IOS XR for simplified configuration
• Scalable to meet growing bandwidth and security demands
• Reduces downtime and operational risk

Technical Specifications

• License type: Per-chassis redundancy
• Supported platforms: Cisco ASR 9000 series routers
• Software compatibility: IOS XR 6.1 and later
• Maximum concurrent sessions: Up to 1 million per chassis
• Throughput support: Up to 10 Gbps firewall/NAT throughput per chassis
• Redundancy mode: Active/Standby with state synchronization

Typical Applications

• Enterprise data center edge security
• Service provider aggregation points
• Critical infrastructure with zero tolerance for network outages
• High-traffic web hosting environments
• Financial services requiring continuous transaction processing
• Any deployment where firewall/NAT availability is a top priority

By adding the FLSASR1-FWNAT-R license, organizations can enhance resilience, protect against session loss, and maintain consistent security policies across redundant chassis, delivering a robust and reliable network security posture.