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ISR4451-X-AX/K9, Cisco ISR4451 Integrated Services Router, 1Gbps-2Gbps throughput/4 WAN-LAN ports/4 SFP ports

Name: ISR4451-X-AX/K9, Cisco ISR4451 Integrated Services Router, 1Gbps-2Gbps throughput/4 WAN-LAN ports/4 SFP ports
SKU: ISR4451-X-AX/K9
Price: 20869 USD
Availability: InStock
Rating: 4.8 (12 reviews)

Brand: Cisco
Model: ISR4451-X-AX/K9
In Stock
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- Hong Kong

Rating:

95%

4.8/5.0

12 Reviews

21 Questions

List Price: $34,123.00

39% OFF

$20,869.00

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ISR4451-X-AX/K9, Cisco ISR4451 Integrated Services Router, 1Gbps-2Gbps throughput/4 WAN-LAN ports/4 SFP ports

100% Genuine Ready to Ship

$34,123.00

39% OFF

$20,869.00

Overview

End-of-Life Notice

ISR4451-X-AX/K9 is officially EOL. Service support ends on 2028-11-30.

For full lifecycle details, see ISR4451-X-AX/K9 EOL.

Recommended Replacement

Official replacement model. Aligned with current deployment environments.

C8300-2N2S-6T

Cisco ISR4451-X-AX/K9 Overview

The Cisco ISR4451-X-AX/K9 is a high-performance enterprise router built for secure branch and regional networks across Asia, Europe, Africa, and North America. Delivering 1 Gbps to 2 Gbps aggregate throughput, it supports demanding VPN, MPLS, and application services on a single integrated platform. With 4 onboard 10/100/1000 RJ-45 ports, 4 SFP ports, and flexible NIM and service-module slots, this Cisco router is ideal for distributors, SMB integrators, and end users needing scalable, services-rich WAN connectivity.

Product Highlights

2 Gbps

High Speed

4xGE

RJ-45 Ports

4xSFP

Fiber Uplks

Product Applications Scenarios

Enterprise Network

The ISR4451-X-AX/K9 consolidates routing, VPN, and services to simplify enterprise WAN, reducing branch complexity and up to 30% operating costs.

Cloud Services

High throughput and MPLS support enable secure, reliable cloud access, improving multi-region application performance and user experience.

Edge & IoT

Flexible GE and SFP interfaces allow secure aggregation of IoT and edge traffic, optimizing backhaul bandwidth and service availability.

Product Features Comparison


Model	ISR4451-X-AX/K9	C2811-VSEC-CCME/K9	ASR1002X-10G-SECK9	ASR1002X-10G-VPNK9
Brand	Cisco	Cisco	Cisco	Cisco
Routing Throughput	1 Gbps to 2 Gbps	n/a	Max Throughput: 36 Gbps	Throughput: Up to 10 Gbps
Interface Configuration	4 RJ-45 10/100/1000, 4 SFP, 2 SM, 3 NIM	Digital Ports Quantity: 16	Ports: 6 x SFP+ ports; 6 SPA slots	Interfaces: 6 x Gigabit Ethernet, 4 x 10 Gigabit Ethernet
Supported Protocol	Description: Cisco ISR 4451 AppX Advanced services router (MPLS, OTV)	Network / Transport Protocol: IPSec	Operating System: IOS XE	Routing Protocols: OSPF, BGP, EIGRP, RIP
VPN Capability	n/a	Network / Transport Protocol: IPSec	VPN: Yes	Security Features: Integrated VPN; Licensing: VPN, AES license included
Integrated Features	OIR, ISC slot, PoE options, USB, serial console/aux	Features: Cisco IOS, firewall, MPLS, VLAN, URL filtering	Security Features: Built-in encryption; QoS: Advanced QoS	AAA Support: TACACS+, RADIUS; Redundancy: Yes

Optional Add-ons

Model Number	Description
NIM-2GE-CU-SFP	Cisco dual-port GE combo copper/SFP network interface module for ISR 4000 routers
PVDM4-64	Cisco PVDM4-64 voice DSP module for rich unified communications on ISR4451 platforms
ISR4451-PWR-AC	Cisco AC power supply option for ISR4451 Integrated Services Routers in enterprise deployments

Quality Certifications

Specification

Cisco ISR4451-X-AX/K9 Specification

Model

ISR4451-X-AX/K9

Brand

Cisco

Description

Cisco ISR 4451 AppX Advanced services router (2GE, 2NIM, 1SM, 8G FLASH, 4G DRAM, MPLS, OTV)

Aggregate Throughput

1 Gbps to 2 Gbps

Total Onboard WAN or LAN 10/100/1000 Ports

RJ-45-Based Ports

SFP-Based Ports

Enhanced Service-Module Slots

Doublewide Service-Module Slots

1 (assumes no singlewide SM-X modules installed)

NIM Slots

OIR (All I/O Modules)

Yes

Onboard ISC Slot

Default DDR3 ECC DRAM (Combined Control/Services/Data Planes)

Maximum DDR3 ECC DRAM (Combined Control/Services/Data Planes)

Default DDR3 ECC DRAM (Data Plane)

2 GB

Maximum DDR3 ECC DRAM (Data Plane)

2 GB

Default DDR3 ECC DRAM (Control/Services Plane)

4 GB

Maximum DDR3 ECC DRAM (Control/Services Plane)

16 GB

Default Flash Memory

8 GB

Maximum Flash Memory

32 GB

External USB 2.0 Slots (Type A)

USB Console Port (Type B Mini, up to 115.2 kbps)

Serial Console Port (RJ-45, up to 115.2 kbps)

Serial Auxiliary Port (RJ-45, up to 115.2 kbps)

Power-Supply Options

Internal: AC, DC and PoE

Redundant Power Supply

Internal: AC, DC and PoE

AC Input Voltage

100 to 240 VAC autoranging

AC Input Frequency

47 to 63 Hz

AC Input Current Range (Maximum, AC Power Supply)

7.1 to 3.0 A

AC Input Surge Current

<50 A

Typical Power (No Modules)

158 W

Maximum Power with AC Power Supply (No PoE)

450 W

Maximum Power with PoE Power Supply (Platform Only)

1000 W with PoE redundant; 1450 W with PoE boost, no redundancy

Maximum Endpoint PoE Power Available

500 W with optional redundancy

Maximum Endpoint PoE Power Capacity with PoE Boost

950 W, no redundancy

Weight

25.37 kg

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Customer Reviews

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Q&A

Questions & Answers

How does the ISR4451-X-AX/K9 compare to similar products?

The ISR4451-X-AX/K9 offers higher throughput and more advanced features like AVC and OnePK compared to lower-end ISR models.

What are common troubleshooting steps for the ISR4451-X-AX/K9?

Common steps include checking power connections, verifying port configurations, and updating firmware.

What are the benefits of the multi-core CPU in the ISR4451-X-AX/K9?

The multi-core CPU allows concurrent processing of control, data, and services without performance degradation.

Are the products sold on router-switch.com authentic?

Yes, router-switch.com only sells 100% genuine products from authorized brands. As a multi-brand authorized distributor, all items are sourced through official channels and include valid manufacturer warranties. Customers may verify authorization via brand websites or request certification documents.

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How cost-effective is the ISR4451-X-AX/K9?

The ISR4451-X-AX/K9 offers robust performance with 1Gbps-2Gbps throughput and features such as dual-power and security for high value in its price range.

What are the unique features of the ISR4451-X-AX/K9?

The ISR4451-X-AX/K9 features 4 WAN/LAN ports, 4 SFP ports, multi-core CPU, dual-power, and supports technologies like WAAS, AVC, and intelligent WAN.

What are the application scenarios for the ISR4451-X-AX/K9?

The ISR4451-X-AX/K9 is ideal for enterprises demanding high-security, voice support, and high throughput up to 2Gbps.

How do you install the ISR4451-X-AX/K9?

Installation is straightforward; mount the device, connect power, and configure through the Cisco CLI or web interface following the user manual.

Does the ISR4451-X-AX/K9 require upgrades?

The ISR4451-X-AX/K9 may require periodic software upgrades to ensure optimal performance and security compliance.

Are there alternative products to the ISR4451-X-AX/K9?

Alternative Cisco routers include the ISR4351 and ISR4431, depending on specific throughput and feature requirements.

What are common troubleshooting steps for the ISR4451-X-AX/K9?

Common steps include verifying power connections, checking interface configurations, and reviewing system logs for error messages.

What accessories are available for the ISR4451-X-AX/K9?

Accessories include additional SFP modules, power supplies, and rack mount kits for enhanced functionality and deployment flexibility.

How does the ISR4451-X-AX/K9 compare with similar products?

The ISR4451-X-AX/K9 offers higher throughput and advanced features like separate control and services CPUs compared to its peers.

What is the benefit of having separate control and service CPUs in the ISR4451-X-AX/K9?

The separate CPUs enhance performance by dedicating resources to management tasks and service operations independently, ensuring smoother operation under load.

How cost-effective is the ISR4451-X-AX/K9?

The ISR4451-X-AX/K9 offers high performance with 1Gbps-2Gbps throughput and multiple functionalities, making it a cost-effective solution for enterprise needs.

What are the key features of the ISR4451-X-AX/K9?

Key features include 4 WAN/LAN ports, 4 SFP ports, a multi-core CPU, dual-power capability, and extensive security and voice functions.

What application scenarios is the ISR4451-X-AX/K9 suited for?

The ISR4451-X-AX/K9 is ideal for high-performance branch offices requiring integrated services with robust security and intelligent WAN capabilities.

How do I install the ISR4451-X-AX/K9?

Installation involves mounting the router, connecting power supplies, and configuring initial settings through the console port.

Does the ISR4451-X-AX/K9 need regular upgrades?

Yes, regular firmware updates are recommended to ensure optimal performance and security.

Are there alternative products to the ISR4451-X-AX/K9?

Alternatives include other Cisco ISR 4000 series routers, such as the ISR4321/K9 or ISR4431/K9, depending on throughput and feature requirements.

What accessories are available for the ISR4451-X-AX/K9?

Available accessories include additional power supplies, SFP modules, and mounting kits.

How does the ISR4451-X-AX/K9 compare to similar products?

The ISR4451-X-AX/K9 offers higher throughput and more advanced features like AVC and OnePK compared to lower-end ISR models.

What are common troubleshooting steps for the ISR4451-X-AX/K9?

Common steps include checking power connections, verifying port configurations, and updating firmware.

What are the benefits of the multi-core CPU in the ISR4451-X-AX/K9?

The multi-core CPU allows concurrent processing of control, data, and services without performance degradation.

Are the products sold on router-switch.com authentic?

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