ISR4431K9 Cisco ISR4431/K9 ISR 4431 Routers Modular Gigabit Ethernet New

Name: ISR4431K9 Cisco ISR4431/K9 ISR 4431 Routers Modular Gigabit Ethernet New
Brand: Cisco
SKU: ISR4431K9
Price: 345.00 USD
Availability: InStock
Rating: 5 (13 reviews)

Mfr. Part #: ISR4431K9

Brand: Cisco

Condition: Refurbished

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Was: $375.00

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Warranty: 90-day return/replacement

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ISR4431/K9

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overview

specifications

faqs

reviews

overview

ISR4431K9 Overview

CISCO - 4431 Router - 4 Ports - 8 Slots - Rack-mountable, Wall Mountable (ISR4431/K9).

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specifications

Specifications

Overview

Condition	Refurbished
Brand	Cisco
Stock	In Stock

Key Features

Ethernet Technology	Gigabit Ethernet
Form Factor	Wall Mountable
Network Technology	10/100/1000base-t
Number Of Total Expansion Slots	8
Product Family	4000
Product Type	Router

faqs

Frequently Asked Questions

What is the primary throughput capacity of the Cisco ISR4431/K9 router? +

The Cisco ISR4431/K9 is designed for performance-demanding branch offices, offering a base aggregate throughput of 500 Mbps. This capacity can be further scaled up to 1 Gbps through performance licenses, allowing the device to adapt as your network traffic requirements grow without needing to replace the underlying hardware platform.

How many integrated network ports are available on the ISR4431/K9? +

This router comes equipped with four built-in GE ports. Three of these ports are dual-mode, supporting either RJ-45 or SFP connections. This flexibility allows network administrators to easily integrate the device into various physical environments, whether connecting to copper-based local infrastructure or fiber-optic service provider handoffs.

Does the ISR4431/K9 support modular expansion for WAN connectivity? +

Yes, the ISR4431/K9 features two integrated Network Interface Module (NIM) slots and one Service Module (SM) slot. These modular slots provide significant investment protection by allowing you to add specialized modules for WAN aggregation, high-density switching, or voice connectivity as your specific enterprise branch requirements evolve.

What type of management interface does the Cisco ISR4431 support? +

Management is handled through a dedicated console port, an auxiliary port, and two USB ports for easy configuration loading. It supports standard Cisco IOS XE management protocols, including CLI access, SNMP, and NETCONF, ensuring it integrates seamlessly with existing enterprise management frameworks and orchestration tools for efficient network oversight.

Is the ISR4431/K9 suitable for branch office SD-WAN deployments? +

Absolutely. The ISR4431/K9 is a cornerstone of Cisco’s SD-WAN solution. Its architecture supports application-aware routing, centralized control, and deep packet inspection, making it an ideal choice for businesses looking to modernize their branch connectivity, optimize multi-cloud access, and ensure secure, reliable application delivery across the enterprise.

How do I upgrade the performance capabilities of the Cisco ISR4431? +

Performance upgrades are achieved through Cisco’s software licensing model. By applying the appropriate throughput licenses, you can increase the router's base 500 Mbps capacity to 1 Gbps. This software-defined approach eliminates the need for hardware swaps, providing a straightforward path to scaling your branch routing infrastructure as bandwidth demands increase.

What is the architectural advantage of the multi-core CPU design in the ISR4431? +

The ISR4431 utilizes a multi-core processor architecture that decouples the control plane from the data plane. This design ensures that high-speed packet forwarding is not negatively impacted by management tasks or control-plane processing, resulting in consistent, high-performance routing even during periods of heavy network utilization or when running intensive security services.

Does the ISR4431/K9 support hardware-based encryption? +

Yes, this platform includes embedded hardware acceleration for IPsec encryption. By offloading cryptographic processing from the main CPU, the router maintains high throughput speeds even when handling encrypted VPN tunnels, ensuring that your branch office traffic remains secure without sacrificing the speed and efficiency of your WAN connections.

Can BuyRouterSwitch.com provide pricing for large volume orders of the ISR4431? +

Certainly. We specialize in supporting large-scale enterprise rollouts. If you are planning a massive infrastructure refresh and require bulk pricing, our sales team is ready to provide a competitive quote. Simply reach out to us with your bill of materials to discuss volume-based discounts and logistics planning for your specific project needs.

Why should I choose BuyRouterSwitch.com for my Cisco enterprise hardware? +

BuyRouterSwitch.com is a dedicated partner for procurement professionals who demand high-quality, authentic Cisco hardware. We prioritize a secure ordering process and provide direct access to expert product specialists who can assist you in selecting the correct modules and licenses for your ISR4431 deployment, ensuring your network procurement is seamless and professional.

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