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Cisco ISR 4431 Integrated Services Router – High-Performance Branch Connectivity with Advanced Security
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The Cisco ISR 4431 (ISR4431/K9) is a high-performance integrated services router for medium to large branch offices and enterprise edge deployments. It supports advanced routing, VPN, stateful firewall, SD-WAN, and modular NIM expansion with Cisco IOS XE for enterprise-grade connectivity.
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Description
What is the Cisco ISR 4431 Integrated Services Router?
The Cisco ISR 4431 Integrated Services Router is a modular enterprise router built for branch and edge networks. It provides secure WAN and LAN connectivity with advanced routing, VPN, firewall, and Cisco IOS XE SD-WAN support. Its modular design allows easy expansion while delivering reliable performance in a compact 1RU form factor.
Cisco ISR4431/K9 Integrated Services Router Key Features
- To begin with, high-throughput WAN and LAN routing with multiple NIM expansion slots
- Furthermore, advanced security: stateful firewall, IPsec/SSL VPN, and intrusion prevention
- In addition, Cisco IOS XE with automation, SD-WAN, and programmability support
- Additionally, modular NIMs for voice, WAN, and additional interface expansion
- As a result, scalable throughput for medium to large branch and enterprise edge sites
- Moreover, support for OSPF, EIGRP, BGP routing protocols and advanced QoS
- Finally, 1 RU rack-mount chassis – compact and easy to deploy in branch racks
Typical Use Cases
- To begin with, large branch office WAN connectivity with integrated security services
- Furthermore, enterprise edge SD-WAN hub site with high throughput requirements
- Additionally, VPN aggregation and encryption for distributed enterprise branches
- Finally, converged voice, data, video, and security at regional branch sites
FAQ
Q: What is the throughput of the Cisco ISR 4431?
A: The Cisco ISR 4431 delivers higher aggregate throughput than the ISR 4321 and 4331, targeting medium to large branch deployments. With performance licensing, throughput scales significantly for demanding WAN workloads.
Q: Does the Cisco ISR 4431 support SD-WAN?
A: Yes. Running Cisco IOS XE, the ISR 4431 supports Cisco SD-WAN (Viptela) for centralized policy-based routing, WAN optimization, and application-aware traffic management across distributed branch networks.
Q: How does the ISR 4431 compare to the ISR 4331?
A: The ISR 4431 offers higher throughput, more NIM slots, and greater processing power than the ISR 4331, making it better suited for larger branch offices or sites with higher concurrent user loads and security requirements.
Q: What expansion modules are compatible with the ISR 4431?
A: The Cisco ISR 4431 supports a wide range of Cisco NIM modules including additional WAN interfaces (T1/E1, DSL, fiber), voice interface cards, and service modules for security or wireless LAN controllers.
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