United States$5,000,000+
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William Carter
5
Balanced performance and expandability. Works well for growing branch networks.
C1-CISCO4351/K9
Cisco ONE ISR 4351 (3GE.3NIM.2SM.4G FLASH.4G DRAM.IPB)
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Name:
C1-CISCO4351/K9
- Description:
- Cisco ONE ISR 4351 (3GE.3NIM.2SM.4G FLASH.4G DRAM.IPB)
- Rating:
Added to cart 28 times recently
- Availability:
In stock - Ready to Ship
- Brand:
- Cisco
- GTIN:
- 882658806285
- Condition:
- Warranty:
- 3
- List Price:
$14,792.00
- Price:
$1,246.0091.6% off
Quantity:
1
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C1-CISCO4351/K9 Overview
C1-CISCO4351/K9 is a high-performance enterprise router featuring a modular architecture designed for branch office connectivity, delivering robust integrated services including voice, video, and WAN optimization. It offers versatile power options with AC supply and redundant configurations, along with dual WAN and four LAN interfaces that use 10/100/1000 Ethernet technology, ensuring reliable connectivity in demanding network environments.
C1-CISCO4351/K9 provides advanced VPN capabilities with IPSec, DMVPN, and FlexVPN support, while its performance is backed by throughput capacities of up to 400 Mbps and built-in firewall, intrusion prevention, and malware protection features. Modular expansion is achieved through available EHWIC slots, and its high availability, managed and rack-mount form factor make it ideally suited for enterprise deployments requiring secure, scalable, and resilient network access.
C1-CISCO4351/K9 price is $1,246.00, a 91.6% saving from the Cisco list price of $14,792.00. C1-CISCO4351/K9 is in stock and available for next-day dispatch. (terms applied)
Request bulk order quote for C1-CISCO4351/K9 for additional pricing. Browse the full Router Isr 4000 series or explore all Cisco products.
C1-CISCO4351/K9 Specifications
- Form Factor
- Rack-mount
- Ethernet Technology
- 10/100/1000
- Height
- 1.73 inches
- Width
- 17.5 inches
- Depth
- 11.5 inches
- Memory
- 4 GB
- Weight
- 14 lbs
- Product Type
- Enterprise Router
- WAN Configuration
- Dual WAN
- WAN Ports
- 2 WAN
- Wi-Fi Standard
- N/A
- Connectivity Type
- Wired
- Wireless Support
- No
- Firewall Features
- Yes
- Management
- Managed
- Safety
- N/A
- EMC
- N/A
- Telecom
- N/A
- QoS Features
- Supported
- Modular Slots Available
- 2 Slots
- Stacking Capability
- No
- 5G Support
- No
- Device Type
- Router
- High Availability Support
- Supported
- Expansion Slots
- EHWIC
- Power
- 65 Watt
- Broadband
- N/A
- Use Case
- Enterprise
- Integrated Services
- Voice / Video / WAN Optimization
- LAN Ports
- 4 LAN Ports
- Network Protocols
- IPv4 / IPv6
- Compliance Standards
- FCC / CE / UL
- Power Source
- AC Power Supply / Redundant
- Interface Ports
- RJ-45 / Combo Ports
- VPN Support
- IPSec / DMVPN / FlexVPN
- Built-in Security Features
- Firewall / Intrusion Prevention / Malware Protection
- Architecture
- Modular
- Speed/Capacity
- Gigabit
- Routing Protocols
- OSPF / BGP / EIGRP / IS-IS / RIP / Static Routing
- Features
- VPN / VoIP / IPv6 Compatible / Firewall / MPLS
- Remote Management
- SNMP / CLI / NETCONF
- Flash Memory
- 2 GB
- Throughput Capacity
- 400 Mbps
- Product Name
- C1-CISCO4351/K9
C1-CISCO4351/K9 Use Case
Secure Hybrid Cloud Connectivity for Financial Branch Offices
Scenario: A global banking institution deploys the C1-CISCO4351/K9 Cisco ONE ISR 4351 (3GE, 3 NIM, 2 SM, 4G Flash, 4G DRAM, IPB) at regional branches to establish high-speed, encrypted IPsec VPN tunnels to on-premises data centers and public cloud platforms. Three Gigabit Ethernet ports and hardware-accelerated encryption deliver sub-millisecond latency and 500 Mbps throughput. Outcome: Achieves end-to-end data security, meets PCI-DSS compliance, and reduces application access times by 40%, enhancing customer satisfaction and regulatory adherence.
Optimized SD-WAN Edge for Multi-Site Retail Chains
Scenario: A national retail chain implements the C1-CISCO4351/K9 Cisco ONE ISR 4351 as an SD-WAN edge router across 200 stores. Three NIM slots support LTE/WAN failover and Cisco Intelligent WAN features, dynamically steering point-of-sale transactions, inventory backups, and video surveillance over optimal paths. Outcome: Cuts MPLS costs by 60%, boosts network uptime to 99.9%, and improves checkout speeds by 30%, delivering rapid ROI and uniform user experience.
Next-Gen Secure Edge for Healthcare Campus Segmentation
Scenario: A multi-building hospital campus uses the C1-CISCO4351/K9 Cisco ONE ISR 4351 to segment networks for medical devices, patient Wi-Fi, and administrative systems. Two service modules host advanced firewall and intrusion prevention, while 4 GB Flash and 4 GB DRAM enable fast configuration updates. Outcome: Ensures HIPAA compliance, prevents lateral threat propagation, and simplifies policy management—reducing breach remediation time by 50% and sustaining mission-critical uptime.
Quality Certifications
To get the detailed certification, please go to the Compliance Center.
Product Comparison Table
 C1-CISCO4351/K9 |  ISR4451-X/K9 |  ISR4221X/K9 |  C1-CISCO4321/K9 |  ISR4461-AXV/K9 | |
|---|---|---|---|---|---|
| 5G Support | No | No | No | No | No |
| Architecture | Modular | Modular | Fixed | 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 / Malware Protection | Firewall / Intrusion Prevention | Firewall / Intrusion Prevention / Malware Protection |
| Compliance Standards | FCC / CE / UL | FCC, CE | FCC / CE / RoHS | FCC / CE | FCC / CE / UL |
| Connectivity Type | Wired | Wired | Wired | Wired | Wired |
| Depth | 11.5 inches | N/A | N/A | 20 inches | N/A |
| Device Type | Router | Router | Router | Router | Router |
| EMC | N/A | N/A | EN 55032 / EN 55024 | 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 / EHWIC | EHWIC / NIM | NIM / EHWIC | EHWIC / NIM |
| Features | VPN / VoIP / IPv6 Compatible / Firewall / MPLS | VPN / Voice / Video / Firewall / MPLS / WAN Optimization | VPN / Firewall / IPv6 Compatible | VPN / VoIP / IPv6 Compatible / Firewall / WAN Optimization | VPN / Firewall / IPv6 Compatible / QoS |
| Firewall Features | Yes | Yes | Yes | Yes | Yes |
| Flash Memory | 2 GB | 2 GB | 256 MB | 512 MB | 1 GB |
| Form Factor | Rack-mount | Rack-mount | Desktop | Rack-mount | Rack-mount |
| Height | 1.73 inches | N/A | N/A | 1.75 inches | 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 / Combo Ports | RJ-45 / SFP | RJ-45 | RJ-45 / SFP | RJ-45 / SFP / Combo Ports |
| LAN Ports | 4 LAN Ports | 4 LAN Ports | 4 LAN Ports | Modular LAN | 4 LAN Ports |
| Management | Managed | Managed | Managed | Managed | Managed |
| Memory | 4 GB | 4 GB | 4 GB | 1 GB | 4 GB |
| Modular Slots Available | 2 Slots | 2 Slots | 2 Slots | 2 Slots | 3+ Slots |
| Network Protocols | IPv4 / IPv6 | IP, IPv6, OSPF, EIGRP, BGP, RIP, MPLS | IPv4 / IPv6 | IPv4, IPv6 | IPv4 / IPv6 |
| Power | 65 Watt | 375 W | 65W | 110 W | 370W |
| Power Source | AC Power Supply / Redundant | AC Power Supply / DC Power Supply / Redundant | AC Power Supply / DC Power Supply / Redundant | AC Power Supply with Redundant Options | AC Power Supply / Redundant |
| Product Name | C1-CISCO4351/K9 | Cisco ISR 4451-X/K9 | Cisco ISR 4221 Integrated Services Router | Cisco 4321 Integrated Services Router (C1-CISCO4321/K9) | Cisco ISR 4461 Integrated Services Router |
| Product Type | Enterprise Router | Enterprise Router | Enterprise Router | Enterprise Router | Enterprise Router |
| QoS Features | Supported | Supported | Supported | Supported | Supported |
| Remote Management | SNMP / CLI / NETCONF | CLI / SNMP / NetConf | SSH / Telnet / SNMP | SSH / Telnet / SNMP | SSH / Telnet / SNMP |
| Routing Protocols | OSPF / BGP / EIGRP / IS-IS / RIP / Static Routing | OSPF / BGP / EIGRP / MPLS / RIP / Static Routing | OSPF / BGP / EIGRP / RIP / Static Routing | OSPF / BGP / EIGRP / RIP / Static Routing | OSPF / BGP / EIGRP / IS-IS / RIP / Static Routing |
| Safety | N/A | N/A | UL / cUL | N/A | N/A |
| Speed/Capacity | Gigabit | Gigabit | Gigabit | Gigabit | Gigabit |
| Stacking Capability | No | No | No | No | Yes |
| Telecom | N/A | N/A | ITU-T | N/A | N/A |
| Throughput Capacity | 400 Mbps | 2 Gbps | 300 Mbps | 0.15 Gbps | 1 Gbps |
| Use Case | Enterprise | Enterprise | Business | Enterprise | Enterprise |
| VPN Support | IPSec / DMVPN / FlexVPN | IPSec / SSL VPN / DMVPN / FlexVPN | IPSec / SSL VPN / DMVPN / FlexVPN | IPSec / SSL VPN / DMVPN / FlexVPN | IPSec / SSL VPN / DMVPN / FlexVPN |
| WAN Configuration | Dual WAN | Dual WAN | Dual WAN | Dual WAN | Dual WAN |
| WAN Ports | 2 WAN | 2 WAN | 2 WAN | 2 WAN | 2 WAN |
| Weight | 14 lbs | N/A | N/A | 14 lbs | N/A |
| Wi-Fi Standard | N/A | N/A | N/A | N/A | N/A |
| Width | 17.5 inches | N/A | N/A | 17.5 inches | N/A |
| Wireless Support | No | No | No | No | No |
Reviews & Ratings
E
Edward Lawson
4
Cisco ONE licensing reduced complexity. Reliable routing and uptime.
P
Patrick Doyle
5
Solid mid range ISR with predictable performance. Easy to manage.
G
George Bennett
3
Handles mixed workloads smoothly. Meets enterprise expectations.
H
Henry Wallace
4
Dependable router for business critical environments.
Questions & Answers
What ports and expansion slots does the Cisco ONE ISR 4351 include?
The Cisco ONE ISR 4351 features 3 integrated Gigabit Ethernet ports, 3 Network Interface Module (NIM) slots, and 2 Service Module (SM) slots to support flexible connectivity and feature expansion.
What are the memory and storage specifications of the Cisco ONE ISR 4351?
This router ships with 4 GB of DRAM and 4 GB of onboard flash storage, providing robust performance for routing, security, and services.
What throughput performance can I expect from the Cisco ONE ISR 4351?
The Cisco ONE ISR 4351 delivers up to 100 Mbps of default data throughput and can be boosted to 200 Mbps with an optional performance license.
What Cisco ONE licensing options are available for ISR 4351?
Cisco ONE offers modular right-to-use licensing bundles—such as Secure, WAN, and Cloud—simplifying access to Cisco DNA Advantage, Security, and other essential features on the ISR 4351.