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CISCO3945E/K9
Cisco 3945 router w/SPE250, 4GE, 3EHWIC, 3DSP, 4SM, 256MBCF,...
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CISCO3945E/K9 is a modular enterprise router engineered with a robust design, featuring dual power supply options and redundant capabilities that ensure reliable operation in demanding network environments. It offers dual WAN configuration along with four integrated Gigabit Ethernet LAN ports, providing high-performance connectivity with efficient throughput for critical business applications.
This router delivers integrated services such as voice, video, and WAN optimization, and supports modular expansion through EHWIC and NIM slots. It incorporates advanced VPN features, built-in firewall security, and QoS management, making it ideally suited for enterprise use cases that require high redundancy, superior performance, and versatile connectivity.
CISCO3945E/K9 price is $9,058.00, a 59.6% saving from the Cisco list price of $22,425.00. CISCO3945E/K9 is in stock and available for next-day dispatch. (terms applied)
Request bulk order quote for CISCO3945E/K9 for additional pricing. Browse the full Router Isr 3900 series or explore all Cisco products.
A national retail chain deploys the Cisco 3945E/K9 with SPE250, 4 GE ports and 3EHWIC modules at each of its 150 branch locations to establish site-to-site IPsec VPN and dual-WAN redundancy. Integrated acceleration and advanced QoS deliver up to 250 Mbps of encrypted throughput, reducing application latency by 40% and centralizing security policy management for consistent, reliable branch connectivity.
A mid-sized financial firm leverages the Cisco 3945E/K9 router with SPE250 packet-acceleration, 1 GB DRAM and policy-based QoS to secure and accelerate critical cloud-hosted trading platforms. The solution sustains sub-50 ms response times, enforces end-to-end encryption, and boosts user productivity by 30% while ensuring compliance with industry regulations.
A global manufacturer installs Cisco 3945E/K9 with 3 DSP modules and 4 SM slots at remote plants to converge VoIP, video conferencing and legacy TDM services. Built-in DSP resources and priority-based traffic shaping ensure crystal-clear voice quality, reduce PSTN costs by 25%, and consolidate multiple communications services on a single, easy-to-manage platform.
To get the detailed certification, please go to the Compliance Center.
 CISCO3945E/K9 |  C3925-VSEC-CUBE/K9 |  CISCO3945/K9 |  C3925-VSEC/K9 |  CISCO3945-V/K9 | |
|---|---|---|---|---|---|
| 5G Support | No | No | No | No | No |
| Architecture | Modular | Modular | 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 | RoHS / FCC / CE | RoHS, FCC, CE | FCC, CE | FCC / CE / RoHS | FCC / CE |
| Connectivity Type | Wired | Wired | Wired | Wired | Wired |
| Depth | N/A | 16.1 inches | 16.14 inches | 16.1 inches | N/A |
| Device Type | Router | Router | Router | Router | Router |
| EMC | FCC / CE | FCC, CE | 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 | NIM, EHWIC | EHWIC / NIM | EHWIC / NIM | NIM |
| Features | VPN / IPv6 Compatible / Firewall / Voice / Video / WAN Optimization | VPN, Firewall, IPv6 Compatible, Integrated Security, Voice, Video | VPN, Voice, Video, IPv6 Compatible, Firewall, MPLS | VPN / IPv6 Compatible / Firewall / Integrated Security | VPN / VoIP / Integrated Services / Firewall / IPv6 Compatible |
| Firewall Features | Yes | Yes | Yes | Yes | Yes |
| Flash Memory | 512 MB | 256 MB | 256 MB | 256 MB | 256 MB |
| Form Factor | Rack-mount | Rack-mount | Rack-mount | Rack-mount | Rack-mount |
| Height | N/A | 1.72 inches | 4.45 inches | 4.3 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 | Voice / Video / WAN Optimization |
| Interface Ports | RJ-45 / SFP | RJ-45, SFP | 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 | 1 GB | 512 MB | 512 MB | 512 MB | 512 MB |
| Modular Slots Available | 2 Slots | 3+ Slots | 3+ Slots | 2 Slots | 3+ Slots |
| Network Protocols | IPv4 / IPv6 / MPLS / VPN | OSPF, BGP, EIGRP, RIP, Static Routing | IP, IPv6, TCP/IP, UDP, OSPF, BGP, EIGRP, RIP | IPv4 / IPv6 | IPv4 / IPv6 |
| Power | 350 Watts | 350 Watts | 350 W | 175W | 350 W |
| Power Source | AC Power Supply / Redundant | AC Power Supply / Redundant | AC Power Supply / Redundant | AC Power Supply / Redundant | AC Power Supply / Redundant |
| Product Name | Cisco 3945 Integrated Services Router | Cisco C3925-VSEC-CUBE/K9 Integrated Services Router | Cisco 3945 Integrated Services Router (ISR) | C3925-VSEC/K9 | CISCO3945-V/K9 Integrated Services Router |
| Product Type | Enterprise Router | Enterprise Router | Enterprise Router | Enterprise Router | Enterprise Router |
| QoS Features | Supported | Supported | Supported | Supported | Supported |
| Remote Management | SSH / Telnet / SNMP | Cisco IOS CLI, SNMP, Telnet, SSH | Telnet/SSH/SNMP | Telnet / SSH / SNMP | Telnet / SSH / SNMP |
| Routing Protocols | OSPF / BGP / EIGRP / RIP / Static Routing | OSPF / BGP / EIGRP / RIP / Static Routing | OSPF / BGP / EIGRP / RIP / Static Routing | OSPF / BGP / EIGRP / RIP / Static Routing | OSPF / BGP / EIGRP / RIP / Static Routing |
| Safety | UL / cUL / CE | UL, IEC | UL / cUL | N/A | N/A |
| Speed/Capacity | Gigabit | Gigabit | Gigabit | Gigabit | Gigabit |
| Stacking Capability | Yes | No | No | No | No |
| Telecom | TIA/EIA | N/A | N/A | N/A | N/A |
| Throughput Capacity | 1 Gbps | 300 Mbps | 75 Mbps | 0.4 Gbps | 300 Mbps |
| Use Case | Enterprise | Enterprise | Enterprise / Business | Enterprise | Enterprise / Business |
| VPN Support | IPSec / SSL VPN / DMVPN | IPSec / SSL VPN / DMVPN | IPSec / SSL VPN / DMVPN / N/A | IPSec / SSL VPN / DMVPN | IPSec / SSL VPN / DMVPN |
| 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 | N/A | 14.3 lbs | 29 lbs | 38 lbs | N/A |
| Wi-Fi Standard | N/A | N/A | N/A | N/A | N/A |
| Width | N/A | 17.1 inches | 17.65 inches | 17.3 inches | N/A |
| Wireless Support | No | No | No | No | No |
Cisco 3945E with SPE250 offers robust performance for voice, data, and UC workloads. Predictable uptime and minimal issues.
Strong, reliable router with excellent throughput. Easy to manage and deploy in medium offices.
Handles branch office traffic efficiently. SPE250 enhances performance and stability for multiple applications.
Durable and high-performing router. Cisco 3945E ensures smooth daily operations for medium business networks.
Predictable performance with reliable UC and data handling. Ideal for demanding office environments.
The Cisco 3945E/K9 is an integrated services router with an SPE250 performance engine, four Gigabit Ethernet ports, three Enhanced HWIC slots, three DSP slots, four service modules, 256 MB compact flash, and 1 GB DRAM for enterprise WAN connectivity.
The Cisco 3945E/K9 delivers up to 75 Mbps of aggregate throughput using the SPE250 engine, supporting advanced security, QoS, and application services for medium-sized branch deployments.
The router features three Enhanced High-Speed WAN Interface Card (EHWIC) slots, three DSP module slots for voice or unified communications, and four fixed service module bays for modular enhancements.
The device ships with 1 GB of DRAM for routing and services processing plus 256 MB of onboard compact flash for OS images, configurations, and data logging.