United States
Name:
ISR4331-V/K9
- Description:
- 100Mbps-300Mbps system throughput, 3 WAN/LAN ports, 2 SFP ports, multi-Core CPU,1 service module slots, Security, Voice, WAAS, Intelligrnt WAN, OnePK, AVC
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$7,528.00
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ISR4331-V/K9
100Mbps-300Mbps system throughput, 3 WAN/LAN ports...
$7,528.00
$3,564.00
17 in Global Warehouse
$3,564.00
53% off
TRUSTED, TRIED, PROVEN
ISR4331-V/K9 Overview
ISR4331-V/K9 is a high-performance integrated services router designed for enterprise branch environments. It features a modular architecture with flexible power options, multiple WAN and LAN interfaces, and integrated services supporting voice, video, and WAN optimization, while delivering robust VPN features to secure data traffic.
The router’s design incorporates modular capabilities and redundancy options to ensure high reliability and efficient throughput performance. With support for advanced routing protocols, built-in firewall and intrusion prevention, and scalable expansion modules, this device is ideally suited for enterprise branch offices and remote deployments that demand secure, uninterrupted connectivity.
What is the price of ISR4331-V/K9?
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ISR4331-V/K9 Specifications
| Product Type | Enterprise Router |
| VPN Support | IPSec / SSL VPN / DMVPN / FlexVPN / N/A |
| Power Source | AC Power Supply / Redundant |
| Routing Protocols | OSPF / BGP / EIGRP / RIP / Static Routing |
| Broadband | N/A |
| Architecture | Modular |
| WAN Configuration | Dual WAN |
| WAN Ports | 2 WAN |
| LAN Ports | 4 LAN Ports |
| Ethernet Technology | 10/100/1000 |
| Wi-Fi Standard | N/A |
| Connectivity Type | Wired |
| Network Protocols | IPv4 / IPv6 / MPLS |
| Remote Management | SSH / Telnet / SNMP |
| Compliance Standards | CE / FCC / UL |
| Wireless Support | No |
| Speed/Capacity | Gigabit |
| Firewall Features | Yes |
| Features | VPN / Voice / Video / IPv6 Compatible / Firewall / MPLS |
| Use Case | Enterprise / Branch |
| 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 | 0.15 Gbps |
| QoS Features | Supported |
| Built-in Security Features | Firewall / Intrusion Prevention / Malware Protection |
| Expansion Slots | EHWIC / NIM / SM-X |
| Modular Slots Available | 3+ Slots |
| Stacking Capability | Yes |
| 5G Support | No |
| Memory | 4 GB |
| Flash Memory | 2 GB |
| Interface Ports | RJ-45 / SFP |
| Power | 250 W |
| Device Type | Router |
| Product Name | Cisco ISR 4331 Integrated Services Router |
| Height | 4.33 inches |
| Width | 17.4 inches |
| Depth | 13.9 inches |
| Weight | 19 lbs |
ISR4331-V/K9 Use Case
Secure SD-WAN Branch Connectivity for Financial Services
In a branch office of a financial services firm, the ISR4331-V/K9 delivers up to 300 Mbps of secure SD-WAN connectivity using 3 WAN/LAN ports, 2 SFP ports, a multi-core CPU, and Intelligent WAN. Integrated security (NGFW, IPS), Cisco WAAS acceleration, and AVC optimize encrypted transaction data, while the service module slot supports optional Wi-Fi or hardware encryption and OnePK APIs automate network orchestration. Outcome: sub-10 ms transaction latency, PCI DSS compliance, and 99.999% uptime.
High-Availability Retail POS and Voice Integration
A national retail chain deploys the ISR4331-V/K9 at over 200 stores to unify POS systems, voice communications, and inventory management over bonded broadband links (3 WAN ports) and fiber uplinks (2 SFP ports). The multi-core CPU combined with a service module slot hosts voice DSP and application-level firewall modules, while WAAS and Intelligent WAN prioritize real-time credit card authorizations and VoIP calls. Outcome: 30% faster checkout processing, 24/7 voice support availability, and WAN cost savings of 40%.
Cloud Application Acceleration and Secure Onramp for Global Teams
Global enterprises leverage the ISR4331-V/K9 to accelerate SaaS and cloud-hosted applications across multi-branch sites by deploying Intelligent WAN, Cisco WAAS, and AVC on a 100–300 Mbps multi-core CPU platform. Integrated VPN and NGFW services secure data in transit, while OnePK APIs enable dynamic SDN-driven bandwidth provisioning. Outcome: 50% improved Office 365 responsiveness, seamless video conferencing, and on-demand network scalability.
Quality Certifications
To get the detailed certification, please go to the Compliance Center.
Product Comparison Table
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|---|---|---|---|---|---|
| 5G Support | No | No | No | No | No |
| Architecture | Modular | Modular | Modular | Fixed | Fixed |
| 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 / Malware Protection | Firewall / Intrusion Prevention | Firewall / Intrusion Prevention / Malware Protection |
| Compliance Standards | CE / FCC / UL | FCC / CE / UL | IEEE / FCC / CE | FCC / CE / UL | FCC, CE |
| Connectivity Type | Wired | Wired | Wired | Wired | Wired |
| Depth | 13.9 inches | 11.5 inches | N/A | 12 inches | 15 inches |
| Device Type | Router | Router | Router | Router | Router |
| EMC | N/A | N/A | N/A | N/A | N/A |
| Ethernet Technology | 10/100/1000 | 10/100/1000 | 10/100/1000 | 10/100/1000 | 10/100/1000 |
| Expansion Slots | EHWIC / NIM / SM-X | EHWIC | EHWIC / NIM / SFP+ | EHWIC / NIM | EHWIC |
| Features | VPN / Voice / Video / IPv6 Compatible / Firewall / MPLS | VPN / VoIP / IPv6 Compatible / Firewall / MPLS | VPN / Firewall / VoIP / IPv6 Compatible / MPLS / Integrated Services | VPN / Firewall / IPv6 Compatible | VPN / IPv6 Compatible / Firewall / MPLS |
| Firewall Features | Yes | Yes | Yes | Yes | Yes |
| Flash Memory | 2 GB | 2 GB | 512 MB | 256 MB | 512 MB |
| Form Factor | Rack-mount | Rack-mount | Rack-mount | Rack-mount | Rack-mount |
| Height | 4.33 inches | 1.73 inches | N/A | 1.75 inches | 1.75 inches |
| High Availability Support | Supported | Supported | Supported | Not Supported | Supported |
| Integrated Services | Voice / Video / WAN Optimization | Voice / Video / WAN Optimization | Voice / Video / WAN Optimization | Voice / Video / WAN Optimization | Voice / Video |
| Interface Ports | RJ-45 / SFP | RJ-45 / Combo Ports | RJ-45 / SFP | RJ-45, SFP | RJ-45 / SFP |
| LAN Ports | 4 LAN Ports | 4 LAN Ports | 4 LAN Ports | 4 LAN Ports | 4 LAN Ports |
| Management | Managed | Managed | Managed | Managed | Managed |
| Memory | 4 GB | 4 GB | 4 GB | 1 GB | 4 GB |
| Modular Slots Available | 3+ Slots | 2 Slots | 3+ Slots | 1 Slot | 3+ Slots |
| Network Protocols | IPv4 / IPv6 / MPLS | IPv4 / IPv6 | IPv4, IPv6, MPLS | IPv4, IPv6, MPLS | IPv4, IPv6 |
| Power | 250 W | 65 Watt | 150 W | 70 Watt | 200 Watts |
| Power Source | AC Power Supply / Redundant | AC Power Supply / Redundant | AC Power Supply / DC Power Supply / Redundant | AC Power Supply | AC Power Supply |
| Product Name | Cisco ISR 4331 Integrated Services Router | C1-CISCO4351/K9 | ISR4431-DNA | Cisco ISR 4221 Integrated Services Router | ISR4321-DNA |
| Product Type | Enterprise Router | Enterprise Router | Enterprise Router | Enterprise Router | Enterprise Router |
| QoS Features | Supported | Supported | Supported | Supported | Supported |
| Remote Management | SSH / Telnet / SNMP | SNMP / CLI / NetConf | SSH / Telnet / SNMP / NETCONF | SSH, Telnet, SNMP | Cisco DNA Center, CLI, Web UI |
| Routing Protocols | OSPF / BGP / EIGRP / RIP / Static Routing | OSPF / BGP / EIGRP / IS-IS / RIP / Static Routing | OSPF / BGP / EIGRP / MPLS / IS-IS / RIP / Static Routing | OSPF / BGP / EIGRP / RIP / Static Routing | OSPF / BGP / EIGRP / RIP / Static Routing |
| Safety | N/A | N/A | N/A | N/A | N/A |
| Speed/Capacity | Gigabit | Gigabit | Gigabit | Gigabit | Gigabit |
| Stacking Capability | Yes | No | No | No | No |
| Telecom | N/A | N/A | N/A | N/A | N/A |
| Throughput Capacity | 0.15 Gbps | 400 Mbps | 1.2 Gbps | 0.25 Gbps | 0.3 Gbps |
| Use Case | Enterprise / Branch | Enterprise | Enterprise | Enterprise / Branch Office | Enterprise / Business |
| VPN Support | IPSec / SSL VPN / DMVPN / FlexVPN / N/A | IPSec / DMVPN / FlexVPN | IPSec / SSL VPN / GRE / DMVPN / FlexVPN | IPSec / SSL VPN | IPSec / SSL VPN / DMVPN / FlexVPN / N/A |
| WAN Configuration | Dual WAN | Dual WAN | Dual WAN | Dual WAN | Dual WAN |
| WAN Ports | 2 WAN | 2 WAN | Modular WAN | 2 WAN | 2 WAN |
| Weight | 19 lbs | 14 lbs | N/A | 10 lbs | 11 lbs |
| Wi-Fi Standard | N/A | N/A | N/A | N/A | N/A |
| Width | 17.4 inches | 17.5 inches | N/A | 17.6 inches | 17 inches |
| Wireless Support | No | No | No | No | No |
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Questions & Answers
Q
What is the maximum system throughput of the ISR4331-V/K9?
A
The Cisco ISR4331-V/K9 delivers up to 100 Mbps of default throughput and can scale to 300 Mbps aggregate performance with the Performance on Demand license.
Q
How many WAN and LAN ports are available on the ISR4331-V/K9?
A
This router includes three integrated Gigabit Ethernet ports that can be configured individually as WAN or LAN interfaces.
Q
Which SFP ports does the ISR4331-V/K9 support for fiber connectivity?
A
The ISR4331-V/K9 provides two built-in SFP slots that support a variety of Cisco fiber and copper transceivers for 1 Gbps uplinks.
Q
What type of CPU architecture powers the ISR4331-V/K9?
A
It features a multi-core CPU design with dedicated hardware acceleration to run security, voice, WAAS and data services simultaneously.
Q
Can I expand the ISR4331-V/K9 with additional network modules?
A
Yes. It offers one Cisco Network Interface Module (NIM) slot for service-module expansion such as additional WAN, voice or security modules.
Q
Does the ISR4331-V/K9 support advanced security features out of the box?
A
Yes. It supports Cisco IOS Firewall, intrusion prevention (IPS), site-to-site and remote-access VPN, URL filtering and Advanced Malware Protection via optional licenses.
Q
How does the ISR4331-V/K9 handle enterprise voice and collaboration?
A
It includes embedded voice DSP resources and supports Cisco Unified Border Element, Survivable Remote Site Telephony and SIP/H.323 session management.
Q
What benefits does Cisco WAAS provide on the ISR4331-V/K9?
A
Cisco Wide Area Application Services (WAAS) accelerate application performance over the WAN, reducing bandwidth consumption and improving user experience.
Q
Does the ISR4331-V/K9 support Cisco Intelligent WAN (IWAN)?
A
Yes. With IWAN, you get dynamic path selection, transport independence, performance SLA management and secure direct Internet access.
Q
What programmability options are available with Cisco OnePK on the ISR4331-V/K9?
A
The router supports Cisco One Platform Kit (OnePK) APIs, enabling integration with custom network-automation tools and third-party applications.
Q
How does Application Visibility and Control (AVC) work on the ISR4331-V/K9?
A
AVC uses deep-packet inspection to identify, monitor and prioritize business-critical applications in real time, enforcing policies per flow.
Q
What are the primary use cases for the ISR4331-V/K9?
A
It’s ideal for medium-sized branch offices, retail stores or regional data nodes that require integrated routing, security, voice and WAN optimization.
Q
What power supply options are supported by the ISR4331-V/K9?
A
The router ships with an internal universal AC power supply (100–240 V). An optional DC power supply module can be ordered separately.
Q
How do I configure Quality of Service (QoS) on the ISR4331-V/K9?
A
Use Cisco’s modular QoS CLI to define traffic classes, apply policing, shaping and queuing policies per interface for priority services.
Q
What licensing models are available for the ISR4331-V/K9?
A
You can choose from Performance, Security, Unified Communications (Voice) and AppX licenses via Cisco Smart Software Licensing to activate required features.
Q
How can I manage and monitor the ISR4331-V/K9?
A
Management options include Cisco IOS CLI, Embedded Event Manager, SNMP, NetFlow, Cisco DNA Center and optional Cisco Prime Infrastructure integration.
Q
Does the ISR4331-V/K9 support network virtualization and NFV?
A
Yes. It supports VRF-Lite for logical segmentation and Cisco NFV Infrastructure Software (NFVIS) to host virtual network functions directly on the router.
