ISR4321K9 Cisco ISR4321/K9 4321 Integrated Service Router 2 ports Ref

Name: ISR4321K9 Cisco ISR4321/K9 4321 Integrated Service Router 2 ports Ref
Brand: Cisco
SKU: ISR4321K9
Price: 189.75 USD
Availability: InStock
Rating: 5 (10 reviews)

Mfr. Part #: ISR4321K9

Brand: Cisco

Condition: Refurbished

Skip to the end of the images gallery

Skip to the beginning of the images gallery

-13%

Was: $218.21

You Save: $28.46 13% OFF

$189.75 In Stock - Ships Worldwide Order by 2:00 PM ET for Overnight Shipping
Warranty: 90-day return/replacement

Click here to read our Return Policy for returns/replacements.

ISR4321/K9

Quantity:

Extra 5% Off at Checkout

Genuine Guarantee
Volume Pricing Available

Request a Custom Quote

Free ground shipping within the

United States

Government, Federal & Education Procurement

We support quotes, POs, stock docs, and compliance invoicing.

Email: support@buyrouterswitch.com SAM.gov Registered Vendor CAGE Code : 23P86

overview

specifications

faqs

reviews

overview

ISR4321K9 Overview

CISCO - 4321 Router - 2 Ports - 4 Slots - Rack-mountable, Wall Mountable (ISR4321/K9).

Need help with ISR4321K9?

Get pricing, availability, lead time, and compatible options from our team. Chat with us live or email support@buyrouterswitch.com

specifications

Specifications

Overview

Condition	Refurbished
Brand	Cisco
Stock	In Stock

Key Features

Brand Name	CISCO
Ethernet Technology	Gigabit Ethernet
Form Factor	Wall Mountable
Network Technology	10/100/1000base-t
Number Of Total Expansion Slots	4
Product Family	4000
Product Type	Router

faqs

Frequently Asked Questions

What are the primary throughput capabilities of the Cisco ISR4321/K9 router? +

The Cisco ISR4321/K9 is designed for small to medium-sized branch offices, offering a base forwarding throughput of 50 Mbps. This performance is scalable up to 100 Mbps through software-based performance licenses, allowing your network to grow alongside your business requirements without needing to replace the physical hardware chassis immediately.

How many WAN/LAN ports does the Cisco ISR4321/K9 include? +

This router features two built-in 10/100/1000 Ethernet ports, which can be configured as either WAN or LAN interfaces. Additionally, it includes two Enhanced Service Module (SM) slots and one Integrated Services Card (ISC) slot, providing modular flexibility to add specific network interface modules or high-density port adapters to suit your branch office connectivity needs.

Does the ISR4321/K9 support Cisco Software-Defined WAN (SD-WAN) deployments? +

Yes, the ISR4321/K9 is fully compatible with Cisco SD-WAN solutions. By deploying this router, organizations can benefit from centralized management, enhanced application visibility, and optimized traffic routing across hybrid WAN environments, ensuring that critical business applications receive priority and high-quality performance across your distributed enterprise network infrastructure.

Can I use the Cisco ISR4321/K9 for secure remote site VPN connectivity? +

Absolutely. This platform includes integrated hardware-accelerated encryption, making it an excellent choice for securing branch-to-headquarters communications. It supports various IPsec VPN protocols, providing robust data protection and secure site-to-site connectivity while maintaining high performance levels for encrypted traffic flows across your private or public WAN links.

How do I manage the ISR4321/K9 within a large enterprise network? +

The ISR4321/K9 supports versatile management options, including the industry-standard Cisco IOS XE command-line interface (CLI) for granular configuration. It is also compatible with Cisco DNA Center and other network orchestration platforms, enabling streamlined provisioning, automated software updates, and centralized monitoring of multiple branch routers to reduce manual administrative overhead.

What type of memory and storage does the Cisco ISR4321/K9 provide? +

The base configuration includes 4 GB of DRAM and 4 GB of flash memory. This memory architecture is sufficient for running complex routing protocols, advanced security services, and multiple concurrent applications. The modular design allows for future storage upgrades, ensuring the device remains capable of hosting newer, more resource-intensive software images over its operational lifecycle.

Is the ISR4321/K9 rack-mountable for data center or server room environments? +

Yes, the ISR4321/K9 features a compact 1RU (rack unit) form factor, making it ideal for standard 19-inch rack installations. Its shallow depth is specifically engineered to fit comfortably into space-constrained branch wiring closets or equipment racks, ensuring efficient use of physical space while maintaining standard hardware footprint compliance.

What licensing model does the Cisco ISR4321/K9 use? +

The platform utilizes a feature-based licensing model via Cisco IOS XE. You can start with the base IP Base license and upgrade to security-focused or performance-boosting licenses as needed. This approach allows enterprise IT teams to align their spending with specific branch requirements, ensuring that you only invest in the advanced features and throughput levels that your infrastructure currently necessitates.

How can I obtain a bulk quote for the Cisco ISR4321/K9 for a large project? +

For large-scale deployments or enterprise-wide refresh projects, BuyRouterSwitch.com offers specialized volume pricing. Simply add your desired quantity to your cart or contact our dedicated sales team directly. We leverage our deep industry relationships to provide competitive quotes and procurement solutions tailored to satisfy the requirements of large-scale infrastructure rollouts.

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

BuyRouterSwitch.com is a trusted provider of authentic enterprise networking equipment. When you purchase from us, you receive genuine, reliable hardware sourced through legitimate channels. We focus on providing a secure, streamlined ordering process for IT professionals, ensuring your enterprise receives exactly what is needed for critical network deployments with the transparency and efficiency expected in modern procurement.

Reviews