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ISR4431/K9 WAN Edge Router with NIM Expansion and IOS XE
Product Overview The Cisco ISR4431/K9 is a modular, high-performance Integrated Services Router in the Cisco 4000 Series, designed for mid-sized branch offices and enterprise WAN edge deployments. It delivers secure, application-aware services, supports modular interface expansion, and provides up to 1 Gbps system performance, upgradable via a performance license. The ISR4431/K9 is SD-WAN ready, powered by Cisco IOS XE, and offers high availability, QoS, IPsec VPN, and voice/video support with optional licenses.
Product Details
Specification
Description
Product Code
ISR4431/K9
Series
Cisco ISR 4000 Series
Form Factor
1RU rack-mountable
Base Performance
500 Mbps (upgradable to 1 Gbps)
Built-in Interfaces
4 x 1G RJ45 (2 routed, 2 switched)
NIM Slots
2 x Network Interface Module slots
SM Slots
1 x Service Module slot
DRAM
4 GB (expandable to 16 GB)
Flash Storage
8 GB (expandable)
Power Supply
Optional dual redundant AC/DC
Software
Cisco IOS XE
SD-WAN Support
Yes (via IOS XE SD-WAN image)
Security Capabilities
IPsec VPN, ZBFW, SSL VPN (with SEC license)
Voice/UC Support
Available (with UC license)
High Availability
NSF, ISSU, redundant PSU/fans supported
Product Features
Delivers modular routing performance up to 1 Gbps via performance-on-demand licensing
2 NIM slots and 1 SM slot for expansion with voice, WAN, LTE, or switching modules
Powered by Cisco IOS XE, enabling SD-WAN, automation, and application visibility
Voice and video capabilities enabled with optional UC license
Designed for secure, intelligent WAN edge with support for advanced routing and QoS
Supports redundant power supplies for increased branch reliability
Similar Models Comparison
Model
Base Performance
Max Performance
NIM/SM Slots
Voice Capable
SD-WAN Ready
Form Factor
ISR4431/K9
500 Mbps
1 Gbps
2 NIM / 1 SM
Optional
Yes
1RU
ISR4451/K9
1 Gbps
2 Gbps
3 NIM / 2 SM
Optional
Yes
2RU
ISR4351/K9
200 Mbps
400 Mbps
2 NIM / 2 SM
Optional
Yes
2RU
ISR4331/K9
100 Mbps
300 Mbps
2 NIM / 1 SM
Optional
Yes
1RU
Latest ISR 4000 Series Models Comparison
Model
Performance Range
Ports
Target Use Case
ISR4431/K9
500 Mbps – 1 Gbps
4 x 1G RJ45
Mid-sized branches, WAN edge router
ISR4451-X/K9
1 – 2 Gbps
4 x 1G RJ45
Large branches needing more capacity
ISR4331/K9
100 – 300 Mbps
4 x 1G RJ45
Small-to-medium offices with flexibility
Sinanova specializes in supplying ICT networking equipment from leading brands such as Cisco, Huawei, and Juniper. Our product range includes switches, routers, firewalls, wireless access points and controllers, IP phones, video conferencing solutions, and more. We are committed to delivering original and reliable hardware along with professional ICT solutions—all at competitive prices. Our high-quality service ensures a smooth and hassle-free purchasing experience for our clients.
Company Details
Bronze Gleitlager
,
Bronze Sleeve Bushings
and
Graphite Plugged Bushings
from Quality China Factory
Business Type:
Distributor/Wholesaler,Exporter,Seller
Year Established:
2025
Total Annual:
50000-3000000
Employee Number:
50~100
Ecer Certification：
Verified Supplier
Sinanova began as a domestic distributor of Cisco products and an ICT integrator. Over time, the company expanded its portfolio to include Huawei data communication equipment as well as networking solutions from Juniper and Fortinet.
Today, Sinanova specializes in providing a wide range of networ... Sinanova began as a domestic distributor of Cisco products and an ICT integrator. Over time, the company expanded its portfolio to include Huawei data communication equipment as well as networking solutions from Juniper and Fortinet.
Today, Sinanova specializes in providing a wide range of networ...
