United States
Name:
ISR4321-SEC/K9
- Description:
- 50Mbps-100Mbps system throughput, 2 WAN/LAN ports, 1 SFP port, multi-Core CPU,2 NIM, Security, Voice, WAAS, Intelligent WAN, OnePK, AVC
- Rating:
-
(0)
Added to cart 16 times recently
- Availability:
-
In stock - Ready to Ship
- Brand:
- Cisco
- Condition:
- GTIN:
- 646978442123
- Warranty:
-
3 - List Price:
-
$4,510.00
- Price:
-
$2,140.00
53% off
Business price:
Enroll your business for free
3 Year Extended Warranty
Same-day Shipping
14-Day Money Back Guarantee
Need Additional Discount on Product?
Request a quote below - Get Exclusive Pricing and Support.
Exclusive Bulk Discounts tailored to your order size
Priority Processing with a dedicated account manager
Fast Response: Get your custom quote within 5-10 minutes during business hours (Mon-Fri, 6:00 AM – 6:00 PM PST)
Holiday Bonus: Submissions on holidays receive priority handling the next business day
Shipping:
Payment:
Shipping as per your need
Same-day Shipping
Express Delivery Across the USA
Need it fast? Choose Express Shipping and receive your order within 1–3 business days.
Free Ground Shipping Available
Standard ground delivery across the U.S. takes 2–6 days, depending on your location — no extra charge.
International Shipments Made Simple
For all international orders, we ship via your UPS, FedEx, or DHL account — or to your U.S.-based freight forwarder.
Delivery Timelines
Under 100 KG? Ships Express.
Smaller shipments go via DHL or FedEx Express — delivered worldwide in approximately 3 business days.
Over 100 KG? Ships via Freight.
Larger orders are dispatched through freight forwarding partners. Delivery takes 7–10 business days, globally.
Always Delivered to Your Door
Every shipment is delivered directly to your address — regardless of country or carrier.
Our best-in-class warranties
3-Year Extended Warranty
Extended protection, enterprise-grade.
All enterprise hardware is backed by a 3-year warranty — triple the industry standard — covering defects under normal use.
Professional repairs & replacements.
If a hardware issue is confirmed, we’ll repair or replace the unit. Replacement parts carry either original or 3-month coverage.
RMA process, simplified.
Once an RMA is approved, return the defective unit within 10 days. We handle the rest — no service gaps.
Service Boundaries & Exclusions
What’s covered — and what’s best avoided.
Your warranty covers defects under normal use. For continued protection, avoid accidental damage, unauthorized repairs, third-party parts, or extreme environments.
Know your location’s service type.
In some regions, return-to-factory or remote service may apply. On-site service depends on infrastructure availability.
Minimal documentation required.
To initiate service, just submit the invoice and warranty card — no red tape, no waiting.
14-Day Money Back Guarantee
Free 14-Day Returns
Tested it, but it’s not a fit?
Return any product within 14 days of delivery if it doesn’t meet your technical or operational needs.
Initiate returns with ease.
Our RMA process is streamlined — just raise a request, follow the packaging guidelines, and we’ll handle the rest.
Refund or restock, your call.
Changed your mind? Get a refund (restocking fees may apply) or swap with another product.
30-Day Hardware Replacement
Covered for any early faults.
All equipment includes a 30-day replacement warranty. If something goes wrong, we’ll repair or swap it — fast.
Replacements shipped in 10 days or less.
Once your return is inspected and approved, we dispatch the replacement promptly to keep your operations moving.
RMA protocol keeps it smooth.
Just ensure all accessories and original packaging are intact — we’ll take care of the technical validation.
ISR4321-SEC/K9
50Mbps-100Mbps system throughput, 2 WAN/LAN ports,...
$4,510.00
$2,140.00
48 in Global Warehouse
$2,140.00
53% off
TRUSTED, TRIED, PROVEN
ISR4321-SEC/K9 Overview
ISR4321-SEC/K9 is a high-performance enterprise router engineered with a fixed modular architecture that seamlessly integrates advanced security, routing, and WAN/LAN capabilities. It provides versatile power options supporting both AC and DC supplies with redundancy, while offering robust VPN features including IPSec, SSL VPN, DMVPN, and FlexVPN to secure branch connectivity.
ISR4321-SEC/K9 delivers reliable throughput performance of up to 300 Mbps and features integrated services such as voice, video, and WAN optimization. With multiple interface ports, built-in firewall and intrusion prevention, modular expansion slots for NIM or EHWIC modules, and dual WAN configurations for load balancing and redundancy, this router is ideally suited for enterprise branch, small business, and distributed office deployments.
What is the price of ISR4321-SEC/K9?
Lowest price of ISR4321-SEC/K9 is $ 2,140.00. Shop now! Get further exclusive discounts with bulk quotation on ISR4321-SEC/K9
Explore more options from Routers or explore other Cisco products.
ISR4321-SEC/K9 Specifications
| Product Type | Enterprise Router |
| VPN Support | IPSec / SSL VPN / DMVPN / FlexVPN |
| Power Source | AC Power Supply / DC Power Supply (Redundant) |
| Routing Protocols | OSPF / BGP / EIGRP / RIP / Static Routing |
| Broadband | N/A |
| Architecture | Fixed |
| WAN Configuration | Dual WAN |
| WAN Ports | 2 WAN Ports |
| LAN Ports | 2 LAN Ports |
| Ethernet Technology | 10/100/1000 |
| Wi-Fi Standard | N/A |
| Connectivity Type | Wired |
| Network Protocols | IPv4, IPv6 |
| Remote Management | SSH, Telnet, SNMP |
| Compliance Standards | FCC, CE |
| Wireless Support | No |
| Speed/Capacity | Gigabit |
| Firewall Features | Yes |
| Features | VPN, Firewall, IPv6 Compatible |
| Use Case | Enterprise, Small Business |
| Management | Managed |
| Form Factor | Rack-mount |
| Integrated Services | Voice, Video, WAN Optimization |
| High Availability Support | Supported |
| Safety | N/A |
| EMC | N/A |
| Telecom | N/A |
| Throughput Capacity | 300 Mbps |
| QoS Features | Supported |
| Built-in Security Features | Firewall, Intrusion Prevention, Malware Protection |
| Expansion Slots | NIM, EHWIC |
| Modular Slots Available | 1 Slot |
| Stacking Capability | No |
| 5G Support | No |
| Memory | 2 GB |
| Flash Memory | 1 GB |
| Interface Ports | RJ-45, SFP |
| Power | 75W |
| Device Type | Router |
| Product Name | Cisco ISR4321-SEC/K9 |
| Height | N/A |
| Width | N/A |
| Depth | N/A |
| Weight | N/A |
ISR4321-SEC/K9 Use Case
Secure Multi-WAN Branch Connectivity with Intelligent Path Control
A global professional services firm deploys the ISR4321-SEC/K9 at its regional offices, combining two broadband WAN links and one fiber SFP port. Integrated Intelligent WAN, AVC, and Security enforce application-aware routing and threat protection, delivering 99.9% uptime and 35% faster ERP access.
Integrated Voice and Unified Communications for SMB Remote Sites
A mid-sized legal practice implements the ISR4321-SEC/K9 across satellite offices, leveraging embedded Voice licensing and two NIM slots for analog FXS/FXO modules. The multi-core CPU and one SFP port support secure IP telephony and encrypted VPN tunnels, reducing call costs by 45% and ensuring regulatory compliance.
Application Acceleration and Visibility for Retail Network
A nationwide retailer deploys the ISR4321-SEC/K9 in stores to optimize point-of-sale and inventory applications using WAAS and AVC. OnePK and Intelligent WAN deliver real-time traffic analytics and dynamic load balancing over redundant links, boosting transaction throughput by 50% and enhancing customer satisfaction.
Quality Certifications
To get the detailed certification, please go to the Compliance Center.
Product Comparison Table
|
|
|
|
|
|
|---|---|---|---|---|---|
| 5G Support | No | No | No | No | No |
| Architecture | Fixed | Fixed | Modular | Modular | Modular |
| Broadband | N/A | N/A | N/A | N/A | N/A |
| Built-in Security Features | Firewall / Intrusion Prevention / Malware Protection | Firewall, Intrusion Prevention, Malware Protection | Firewall / Intrusion Prevention | Firewall, Intrusion Prevention, Malware Protection | Firewall / Intrusion Prevention / Malware Protection |
| Compliance Standards | FCC, CE, RoHS | FCC, CE | FCC / CE | FCC, CE | FCC, CE, UL |
| Connectivity Type | Wired | Wired | Wired | Wired | Wired |
| Depth | 16.3 inches | N/A | 20 inches | N/A | N/A |
| Device Type | Router | Router | Router | Router | Router |
| EMC | FCC | N/A | N/A | N/A | FCC, CE |
| Ethernet Technology | 10/100/1000 | 10/100/1000 | 10/100/1000 | 10/100/1000 | 10/100/1000 |
| Expansion Slots | NIM / EHWIC / SFP+ | NIM, EHWIC | NIM / EHWIC | EHWIC | NIM |
| Features | VPN / VoIP / IPv6 Compatible / Firewall | VPN, Firewall, IPv6 Compatible | VPN / VoIP / IPv6 Compatible / Firewall / WAN Optimization | VPN, Voice, Video, IPv6 Compatible, Firewall, MPLS, Syslog | VPN / Firewall / IPS / Intrusion Prevention / IPv6 Compatible |
| Firewall Features | Yes | Yes | Yes | Yes | Yes |
| Flash Memory | 512 MB | 1 GB | 512 MB | 256 MB | 2 GB |
| Form Factor | Rack-mount | Rack-mount | Rack-mount | Rack-mount | Rack-mount |
| Height | 1.73 inches | N/A | 1.75 inches | N/A | N/A |
| High Availability Support | Supported | Supported | Supported | Supported | Supported |
| Integrated Services | Voice / Video / WAN Optimization | Voice, Video, WAN Optimization | Voice / Video / WAN Optimization | Voice, Video, WAN Optimization | Voice / Video / WAN Optimization |
| Interface Ports | RJ-45 / SFP+ | RJ-45, SFP | RJ-45 / SFP | RJ-45, SFP | RJ-45 / SFP / Combo Ports |
| LAN Ports | 4 LAN Ports | 2 LAN Ports | Modular LAN | 4 LAN Ports | Modular LAN |
| Management | Managed | Managed | Managed | Managed | Managed |
| Memory | 4 GB | 2 GB | 1 GB | 1 GB | 4 GB |
| Modular Slots Available | 2 Slots | 1 Slot | 2 Slots | 1 Slot | 3+ Slots |
| Network Protocols | IPv4, IPv6 | IPv4, IPv6 | IPv4, IPv6 | IPv4, IPv6 | IPv4, IPv6, MPLS |
| Power | 275 W | 75W | 110 W | 130W | 350 W |
| Power Source | AC Power Supply / DC Power Supply / Redundant | AC Power Supply / DC Power Supply (Redundant) | AC Power Supply with Redundant Options | AC Power Supply / Redundant | AC Power Supply / Redundant |
| Product Name | Cisco ISR 4431 Integrated Services Router (K9) | Cisco ISR4321-SEC/K9 | Cisco 4321 Integrated Services Router (C1-CISCO4321/K9) | Cisco ISR4351-AXV/K9 Integrated Services Router | Cisco ISR4431-VSEC/K9 |
| Product Type | Enterprise Router | Enterprise Router | Enterprise Router | Enterprise Router | Enterprise Router |
| QoS Features | Supported | Supported | Supported | Supported | Supported |
| Remote Management | CLI / SNMP / NETCONF / RESTCONF | SSH, Telnet, SNMP | SSH / Telnet / SNMP | SSH, Telnet, SNMP | SSH, Telnet, SNMP, NETCONF |
| Routing Protocols | OSPF / BGP / EIGRP / MPLS / IS-IS / RIP / Static Routing | OSPF / BGP / EIGRP / RIP / Static Routing | OSPF / BGP / EIGRP / RIP / Static Routing | OSPF / BGP / EIGRP / MPLS / IS-IS / RIP / Static Routing / N/A | OSPF / BGP / EIGRP / MPLS / IS-IS / RIP / Static Routing / N/A |
| Safety | UL | N/A | N/A | N/A | UL Listed |
| Speed/Capacity | Gigabit | Gigabit | Gigabit | Gigabit | Gigabit |
| Stacking Capability | No | No | No | No | Yes |
| Telecom | N/A | N/A | N/A | N/A | N/A |
| Throughput Capacity | 0.2 Gbps | 300 Mbps | 0.15 Gbps | 0.15 Gbps | 1 Gbps |
| Use Case | Enterprise | Enterprise, Small Business | Enterprise | Enterprise | Enterprise |
| VPN Support | IPSec / SSL VPN / GRE / DMVPN / FlexVPN | IPSec / SSL VPN / DMVPN / FlexVPN | IPSec / SSL VPN / DMVPN / FlexVPN | IPSec / SSL VPN / GRE / DMVPN / FlexVPN / N/A | IPSec / SSL VPN / GRE / DMVPN / FlexVPN / N/A |
| WAN Configuration | Dual WAN | Dual WAN | Dual WAN | Dual WAN | Dual WAN |
| WAN Ports | 2 WAN | 2 WAN Ports | 2 WAN | 2 WAN | Modular WAN |
| Weight | 31 lbs | N/A | 14 lbs | N/A | N/A |
| Wi-Fi Standard | N/A | N/A | N/A | N/A | N/A |
| Width | 17.2 inches | N/A | 17.5 inches | N/A | N/A |
| Wireless Support | No | No | No | No | No |
Showing - of 0 Results
Questions & Answers
Q
What is the system throughput of the Cisco ISR4321-SEC/K9?
A
The Cisco ISR4321-SEC/K9 delivers 50–100 Mbps of aggregate system throughput, ideal for small to midsize branch offices requiring scalable performance.
Q
How many WAN and LAN ports does the ISR4321-SEC/K9 include?
A
This router features two configurable WAN/LAN Gigabit Ethernet ports plus one SFP port for fiber connectivity, facilitating flexible network designs.
Q
Can I install additional modules in the ISR4321-SEC/K9?
A
Yes. The ISR4321-SEC/K9 supports two NIM slots for optional network interface modules, enabling customization for voice, security, or specialized WAN services.
Q
What security features are built into the ISR4321-SEC/K9?
A
It includes integrated next-generation firewall, VPN (IPsec/SSL), intrusion prevention (IPS), and secure boot capabilities to safeguard your branch network.
Q
Does the ISR4321-SEC/K9 support Cisco Unified Communications voice?
A
Yes. With embedded Voice DSP resources and NIM support, it delivers enterprise-grade voice, fax, and fax over IP services for branch deployments.
Q
What is Cisco WAAS on the ISR4321-SEC/K9?
A
Cisco WAAS (Wide Area Application Services) accelerates applications across the WAN, reducing latency and improving user experience for enterprise applications.
Q
How does Intelligent WAN (IWAN) enhance performance?
A
Cisco IWAN optimizes application delivery by dynamically steering traffic over the best path, ensuring reliability, security, and high performance for critical services.
Q
What is Cisco OnePK and why is it important?
A
Cisco OnePK is a programmable network API that enables custom application development and automation directly on the router, enhancing operational agility and innovation.
Q
How does Application Visibility and Control (AVC) work?
A
AVC provides deep-packet inspection and flow-based monitoring to classify, prioritize, and report on application traffic, optimizing performance and enforcing policies.
Q
Which power options are available for the ISR4321-SEC/K9?
A
The router supports standard AC power and optional DC power modules, offering deployment flexibility in diverse branch and outdoor scenarios.
Q
What operating system does the ISR4321-SEC/K9 run?
A
It runs Cisco IOS XE, delivering advanced routing, segmentation, and programmability features with high availability and continuous software updates.
Q
How do I configure and manage the ISR4321-SEC/K9?
A
Manage via CLI, Cisco DNA Center, or Cisco Prime Infrastructure for centralized provisioning, monitoring, and troubleshooting of your branch network.
Q
What licensing is required for advanced features?
A
Security and performance features require Cisco Security and Performance on Demand (POD) licenses. Voice and WAAS may need separate feature licenses.
Q
Can I use the ISR4321-SEC/K9 for VPN concentrator services?
A
Yes. With high-throughput encryption and multiple VPN tunnels, it supports secure IPsec and SSL VPN termination for remote sites and mobile users.
Q
What are the ideal use cases for the ISR4321-SEC/K9?
A
Best suited for branch offices, retail locations, and small data centers needing integrated routing, security, voice, and WAN optimization in one platform.
Q
Where can I purchase the Cisco ISR4321-SEC/K9?
A
Authorized Cisco partners and resellers offer this router. Contact your Cisco representative or visit the Cisco Commerce Workspace for ordering options.
