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ISR4451-X-K9

The Cisco ISR4451-X-K9 is a high-performance Integrated Services Router designed for enterprise-grade branch offices, offering modular scalability, multi-gigabit throughput, and integrated security features to support demanding WAN and application-aware networking requirements.

SKU: ISR4451-X-K9 Brand: Product ID: 342521

Description

Cisco ISR4451-X-K9 Technical Overview

The Cisco ISR4451-X-K9 is a modular enterprise-grade integrated services router designed for high-performance WAN edge and branch network environments. As a cornerstone of the Cisco 4000 Series, the ISR4451-X-K9 utilizes a multi-core architecture to decouple the control plane from the data plane, ensuring consistent throughput even under heavy traffic loads. This platform supports high-density service integration, providing the necessary compute resources for advanced security, application visibility, and network virtualization.

The ISR4451-X-K9 chassis features three network interface module (NIM) slots and two enhanced service module (SM-X) slots, offering significant flexibility for interface expansion and service-level upgrades. Its internal architecture supports pay-as-you-grow performance licensing, allowing engineers to scale throughput from 1 Gbps to 2 Gbps without replacing the physical hardware. This modular design ensures long-term investment protection while maintaining the high availability required for mission-critical enterprise connectivity.

Cisco ISR4451-X-K9 Technical Specifications

  • Throughput Scalability: Supports field-upgradable performance tiers up to 2 Gbps to accommodate growing bandwidth requirements.
  • Modular Architecture: Features three NIM slots and two SM-X slots to provide versatile connectivity options and service integration.
  • Integrated Services: Enables concurrent deployment of security, SD-WAN, and voice services without compromising primary routing performance.
  • Redundancy Support: Includes dual internal power supply slots to ensure high availability and continuous operation in critical infrastructure deployments.

Buy or Sell Cisco ISR4451-X-K9

  • For Buyers: ROC Telecom provides rigorously tested, Cisco-compatible hardware for rapid network expansion or as a mission-critical spare. Our field-tested units ensure uptime without OEM lead times.
  • For Sellers: We offer competitive buyback quotes, instant payment, and prepaid shipping for decommissioned ISR4451-X-K9 units and other Cisco surplus.
Who We Are
 
ROC Telecom is a family-owned, Texas-based company specializing in helping businesses unlock value from their networking and telecom equipment. From routers and switches to optical gear and more, we provide a seamless solution for businesses looking to sell, recover assets responsibly, or buy quality-tested equipment at competitive prices.
 
What We Do
 
We make it easy to:
  • Sell Used Equipment: Get a quick, hassle-free quote and maximize the value of your old IT gear.
  • Buy Certified Networking Equipment: Access affordable, quality-tested equipment from top brands like Cisco, Juniper, Ciena, Fujitsu, Infinera and more.
Why Choose ROC Telecom?
  • Expertise You Can Trust: 15 years of experience in asset recovery and resale.
  • Sustainable IT Solutions: Reduce waste and support environmentally responsible practices.
  • Competitive Pricing: Fair, fast, and accurate valuations for all your equipment.
  • Free Shipping Logistics: Fast, secure, and hassle-free shipping or pickup options for buyers and sellers.
Our Process
  1. Submit a Request: You can use the “Buy” or “Sell” buttons above to get started — or fill out a form, call us at 585-406-1248, or email bailey@roctelecom.com. Whatever’s easiest for you, we’ll make it quick and hassle-free.
  2. Quick Evaluation: We’ll assess your equipment—whether you’re looking to sell it or find the right gear for your needs—and provide a fair offer.
  3. Simple Logistics: Fast, secure, and straightforward shipping or pickup solutions.
  4. Value Delivered: Recover funds from unused equipment or save on quality-tested networking and telecom gear.
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