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C931-4P
Cisco 931 Gigabit Ethernet security router with internal pow...
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C931-4P is a high-performance enterprise router built on a fixed architecture that emphasizes reliability and scalability. It features versatile power options with AC power and redundant backup, robust dual WAN interfaces paired with high-speed LAN ports, and comprehensive integrated services such as voice, video, and WAN optimization. With modular design capabilities, the C931-4P supports advanced VPN features like IPSec, SSL VPN, and DMVPN, ensuring secure, uninterrupted connectivity and high throughput for mission-critical applications.
Engineered for demanding enterprise use cases, the C931-4P delivers exceptional performance and redundancy without compromise. Its rich support for industry-standard routing protocols, Quality of Service (QoS), and built-in firewall and intrusion prevention mechanisms make it ideal for branch offices, data centers, and industrial deployments. The router’s rack-mount form factor, dual power supply options, and stacking capability further enhance its suitability for environments where uptime, security, and modular expansion are paramount.
C931-4P price is $1,050.00, a 47.5% saving from the Cisco list price of $2,000.00. C931-4P is in stock and available for next-day dispatch. (terms applied)
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 C931-4P |  C926-4P |  C927-4P |  C927-4PM |  C926-4PLTEGB | |
|---|---|---|---|---|---|
| 5G Support | No | No | No | No | No |
| Architecture | Fixed | Modular | Modular | Modular | Modular |
| Broadband | N/A | N/A | N/A | Fiber Optic / DSL | LTE |
| Built-in Security Features | Firewall / Intrusion Prevention | Firewall, Intrusion Prevention, Malware Protection | Firewall / Intrusion Prevention | Firewall / Intrusion Prevention | Firewall, Intrusion Prevention, Malware Protection |
| Compliance Standards | FCC / CE | FCC, CE, RoHS | FCC / CE | FCC / CE / RoHS | FCC, CE, RoHS |
| Connectivity Type | Wired | Wired | Wired | Wired | Wired |
| Depth | 18 inches | 18 inches | 12.5 inches | 15 inches | N/A |
| Device Type | Router | Router | Router | Router | Router |
| EMC | FCC / CE | N/A | N/A | CE Compliant | N/A |
| Ethernet Technology | 10/100/1000 | 10/100/1000 | 10/100/1000 | 10/100/1000 | 10/100/1000 |
| Expansion Slots | N/A | N/A | SFP+ | NIM / SFP+ | N/A |
| Features | VPN / Firewall / Redundancy / QoS | VPN, IPv6 Compatible, Firewall | VPN / Firewall / IPv6 Compatible | VPN / Firewall / QoS / High Availability / Redundancy | VPN, Firewall, NAT, QoS |
| Firewall Features | Yes | Yes | Yes | Yes | Yes |
| Flash Memory | 1 GB | 512 MB | 512 MB | 256 MB | 256 MB |
| Form Factor | Rack-mount | Rack-mount | Rack-mount | Rack-mount / Chassis | Desktop |
| Height | 4.5 inches | 1.75 inches | 1.7 inches | 1.75 inches | N/A |
| High Availability Support | Supported | Supported | Supported | Supported | Supported |
| Integrated Services | Voice / Video / WAN Optimization | Voice, Video, WAN Optimization | Voice / WAN Optimization | Voice / Video / WAN Optimization | Voice, 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 | 4 GB | 2 GB | 2 GB | 4 GB | 1 GB |
| Modular Slots Available | N/A | N/A | 1 Slot | 2 Slots | 1 Slot |
| Network Protocols | IPv4 / IPv6 / MPLS | IPv4, IPv6 | IPv4, IPv6 | IPv4 / IPv6 | IPv4, IPv6, DHCP, NAT |
| Power | 120W | 65 W | 65 Watt | 150W | 48W |
| Power Source | AC Power Supply / Redundant | AC/DC Power Supply with Redundancy | AC Power Supply / Redundant | AC Power Supply / Redundant | AC Power Supply / DC Power Supply / Redundant |
| Product Name | C931-4P Enterprise Router | C926-4P Enterprise Router | C927-4P Enterprise Router | Cisco C927-4PM | C926-4PLTEGB |
| Product Type | Enterprise Router | Enterprise Router | Enterprise Router | Enterprise Router | Enterprise Gateway |
| QoS Features | Supported | Supported | Supported | Supported | Supported |
| Remote Management | SSH / HTTPS / SNMP | SSH, Telnet, SNMP | SNMP / Telnet / SSH / HTTP / HTTPS | SNMP / CLI / Web GUI | SSH, Telnet, SNMP, HTTPS |
| Routing Protocols | OSPF / BGP / EIGRP / Static Routing | OSPF / BGP / EIGRP / Static Routing | OSPF / BGP / EIGRP / RIP / Static Routing | OSPF / BGP / EIGRP / Static Routing | OSPF / BGP / Static Routing |
| Safety | UL / CE | IEC 60950 | N/A | UL Listed | N/A |
| Speed/Capacity | Gigabit | Gigabit | Gigabit | Gigabit | Gigabit |
| Stacking Capability | Yes | No | Yes | Yes | No |
| Telecom | N/A | N/A | N/A | N/A | N/A |
| Throughput Capacity | 1 Gbps | 1 Gbps | 1 Gbps | 2.5 Gbps | 1 Gbps |
| Use Case | Enterprise | Enterprise | Enterprise | Enterprise / Small Business / Industrial | Enterprise, Industrial |
| VPN Support | IPSec / SSL VPN / DMVPN | IPSec / SSL VPN | IPSec / SSL VPN / DMVPN | IPSec / SSL VPN | IPSec / SSL VPN |
| WAN Configuration | Dual WAN | Dual WAN | Dual WAN | Dual WAN | Dual WAN |
| WAN Ports | 4 WAN | 2 WAN | 2 WAN | 2 WAN | 4 WAN |
| Weight | 15 lbs | 15 lbs | 10 lbs | 12 lbs | N/A |
| Wi-Fi Standard | N/A | N/A | N/A | N/A | N/A |
| Width | 17 inches | 17 inches | 17.5 inches | 17 inches | N/A |
| Wireless Support | No | No | No | No | No |
The internal power supply on the 931 makes for a very clean rack installation. Reliable Gigabit performance and robust security. A top-tier branch router.
Highly efficient and secure. The 931 series offers impressive throughput and the internal power supply is a huge plus for our small office deployments.
Solid and dependable. This router handles our office traffic effortlessly. It's easy to set up and the performance has been rock-solid since day one.
Professional grade security. The 931 is a robust ISR that provides the consistent connectivity our remote teams need. Excellent build quality and reliability.
Seamless performance and easy management. This router is a perfect fit for our satellite offices, providing secure and fast Gigabit Ethernet links without issues.
The Cisco C931-4P is a compact Gigabit Ethernet security router with 4 PoE+ ports, an integrated firewall, VPN acceleration, and an internal AC power supply designed for small branches and remote offices.
It provides 4 x 10/100/1000 PoE+ ports (up to 30 W per port, 60 W total) and 1 x 1 Gbps SFP uplink port for fiber connectivity.
Yes. The C931-4P delivers PoE+ on all four Gigabit ports, offering up to 30 W per port and a total power budget of 60 W to power IP phones, cameras, and access points.
It delivers up to 200 Mbps of aggregate routing throughput and up to 50 Mbps of hardware-accelerated IPsec VPN throughput for secure site-to-site and remote-access connections.
Built-in Cisco IOS Security provides a stateful firewall, intrusion prevention, URL filtering, secure VPN (IPsec/SSL), and optional advanced threat detection via Cisco umbrella integration.
The router features a built-in auto-sensing 100–240 V AC internal power supply with active power factor correction—no external brick required.
You can configure it using the Cisco IOS CLI, the built-in web GUI, SNMP, REST API or integrate with Cisco DNA Center for centralized management.
Supports IPsec site-to-site, remote-access IPsec, anyconnect SSL VPN, GRE tunnels, and up to 50 simultaneous IPsec tunnels with hardware encryption acceleration.
Yes. The C931-4P is desktop-mountable out of the box and supports an optional 19-inch rack-mount kit or wall-mount brackets for flexible deployment.
It operates at 0–40 °C (32–104 °F), 10–90% non-condensing humidity, and complies with FCC, CE, UL safety standards and RoHS environmental directives.
Typical power draw is 35 W under full network load (excluding PoE), with an additional PoE budget of 60 W when all ports are fully loaded.
It includes a Security Essentials license and supports an optional Security Advantage license for advanced features such as IPS and dynamic threat defense.
Upload the new Cisco IOS .bin image via TFTP, FTP or USB, use the 'archive download-sw' command to install, and reboot. Verify with the 'show version' command.
The C931-4P includes a 1-year limited hardware warranty with next-business-day replacement and access to Cisco TAC. Upgrades to Cisco SMARTnet are available.
It’s ideal for small branch offices, retail locations, and remote sites requiring secure WAN connectivity, PoE for endpoint devices, and simplified centralized management.
Yes. It integrates seamlessly with Cisco SD-WAN for policy-based path selection, centralized orchestration, and end-to-end WAN segmentation across distributed sites.