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C931J-4P
Cisco 931 Series ISR model
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Overview of C931J-4P
C931J-4P delivers a robust, modular architecture designed for demanding enterprise environments. It is engineered with redundant AC power options and a carefully balanced mix of WAN and LAN interfaces that include dual WAN ports and four LAN ports, ensuring reliable connectivity and performance. The product integrates essential services such as voice, video, and WAN optimization, making it highly adaptable to evolving network demands.
C931J-4P features comprehensive VPN capabilities including IPSec, SSL VPN, and GRE tunneling for secure remote access. With a throughput capacity of up to 2.5 Gbps and advanced built-in firewall and intrusion prevention features, it offers superior performance and redundancy. Its modular design and expansion options make it an ideal solution for diverse use cases such as branch offices, data centers, and remote sites where high availability and resilient network performance are mission-critical.
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| C931J-4P |  C921-4PLTEAS |  C926-4PLTEGB |  C921J-4P |  C931-4P | |
|---|---|---|---|---|---|
| 5G Support | No | No | No | No | No |
| Architecture | Modular | Modular | Modular | Fixed | Fixed |
| Broadband | N/A | LTE | LTE | 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 |
| Compliance Standards | FCC, CE | FCC, CE, RoHS | FCC, CE, RoHS | FCC, CE, RoHS | FCC / CE |
| Connectivity Type | Wired | Wired | Wired | Wired | Wired |
| Depth | 17 inches | N/A | N/A | 16 inches | 18 inches |
| Device Type | Router | Router | Router | Router | Router |
| EMC | N/A | N/A | N/A | N/A | FCC / CE |
| Ethernet Technology | 10/100/1000 | 10/100/1000 | 10/100/1000 | 10/100/1000 | 10/100/1000 |
| Expansion Slots | NIM, SFP+ | NIM | N/A | NIM | N/A |
| Features | VPN, Firewall, IPv6 Compatible, High Availability | VPN, IPv6 Compatible, Firewall, Redundancy | VPN, Firewall, NAT, QoS | VPN, IPv6 Compatible, Firewall | VPN / Firewall / Redundancy / QoS |
| Firewall Features | Yes | Yes | Yes | Yes | Yes |
| Flash Memory | 512 MB | 512 MB | 256 MB | 256 MB | 1 GB |
| Form Factor | Rack-mount | Rack-mount | Desktop | Rack-mount | Rack-mount |
| Height | 1.75 inches | N/A | N/A | 2 inches | 4.5 inches |
| High Availability Support | Supported | Supported | Supported | Supported | Supported |
| Integrated Services | Voice, Video, WAN Optimization | Voice, Video | Voice, WAN Optimization | Voice, Video, WAN Optimization | Voice / Video / WAN Optimization |
| Interface Ports | RJ-45, SFP, Combo Ports | 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 | 1 GB | 2 GB | 4 GB |
| Modular Slots Available | 3+ Slots | 3+ Slots | 1 Slot | 1 Slot | N/A |
| Network Protocols | IPv4, IPv6, MPLS | IPv4, IPv6, MPLS | IPv4, IPv6, DHCP, NAT | IPv4, IPv6 | IPv4 / IPv6 / MPLS |
| Power | 150 W | 50 Watt | 48W | 90 Watt | 120W |
| Power Source | AC Power Supply / Redundant | Redundant AC/DC Power Supply | AC Power Supply / DC Power Supply / Redundant | AC Power Supply / Redundant | AC Power Supply / Redundant |
| Product Name | C931J-4P Enterprise Modular Router | C921-4PLTEAS | C926-4PLTEGB | C921J-4P Enterprise Router | C931-4P Enterprise Router |
| Product Type | Enterprise Router | Integrated Services Router | Enterprise Gateway | Enterprise Router | Enterprise Router |
| QoS Features | Supported | Supported | Supported | Supported | Supported |
| Remote Management | SSH, SNMP, Telnet | CLI, SNMP, WebUI | SSH, Telnet, SNMP, HTTPS | SNMP, SSH, Telnet, HTTPS | SSH / HTTPS / SNMP |
| Routing Protocols | OSPF / BGP / EIGRP / Static Routing | OSPF / BGP / EIGRP / Static Routing | OSPF / BGP / Static Routing | OSPF / BGP / EIGRP / RIP / Static Routing | OSPF / BGP / EIGRP / Static Routing |
| Safety | N/A | N/A | N/A | N/A | UL / CE |
| Speed/Capacity | Gigabit | Gigabit | Gigabit | Gigabit | Gigabit |
| Stacking Capability | Yes | Yes | No | No | Yes |
| Telecom | N/A | N/A | N/A | N/A | N/A |
| Throughput Capacity | 2.5 Gbps | 1 Gbps | 1 Gbps | 1 Gbps | 1 Gbps |
| Use Case | Enterprise | Enterprise | Enterprise, Industrial | Enterprise | Enterprise |
| VPN Support | IPSec / SSL VPN / GRE / DMVPN / FlexVPN | IPSec / SSL VPN | IPSec / SSL VPN | IPSec / SSL VPN | IPSec / SSL VPN / DMVPN |
| WAN Configuration | Dual WAN | Dual WAN | Dual WAN | WAN | Dual WAN |
| WAN Ports | 2 WAN | 1 WAN (Fixed) / 1 LTE | 4 WAN | 1 WAN | 4 WAN |
| Weight | 11 lbs | N/A | N/A | 15 lbs | 15 lbs |
| Wi-Fi Standard | N/A | N/A | N/A | N/A | N/A |
| Width | 19 inches | N/A | N/A | 18 inches | 17 inches |
| Wireless Support | No | No | No | No | No |
The 931J is a powerful and reliable router for our Japan operations. Consistent Gigabit speeds and excellent security features. A top-tier professional ISR.
High-performance routing for our regional hubs in Japan. It handles heavy traffic effortlessly and the stability is impressive. Very satisfied with this model.
Steady and dependable. The 931J series offers robust connectivity and easy management. It has performed flawlessly in our production environment since deployment.
A workhorse for our Japanese branches. It provides secure and fast Gigabit Ethernet links without any downtime. Excellent build quality and professional reliability.
Exceptional efficiency. This Japan-specific ISR model provides the high-availability performance required for our critical core operations. Very reliable and well-built hardware.
The Cisco 931 Series ISR (SKU C931J-4P) is a compact, high-performance integrated services router designed for small and midsize branch offices, offering robust routing, security, and advanced application services in a single device.
The C931J-4P delivers four Gigabit Ethernet PoE+ ports, dual 10/100/1000 WAN interfaces, embedded security (firewall, VPN), application visibility, and Cisco IOS XE software for simplified management and high reliability.
The Cisco 931J-4P includes four Gigabit Ethernet PoE+ ports, each supplying up to 30 W to power IP phones, wireless access points, and surveillance cameras directly from the router.
The router delivers up to 100 Mbps of aggregate throughput with hardware-accelerated packet forwarding, ensuring low latency and high reliability for voice, video, and data applications.
Built-in security includes stateful firewall, intrusion prevention (IPS), secure VPN (IPsec and DMVPN), URL filtering, and advanced malware protection through Cisco Umbrella integration.
Yes. The C931J-4P supports cloud-based management via Cisco DNA Center and Cisco Meraki Dashboard, simplifying configuration, monitoring, and software updates from a central console.
The C931J-4P supports up to 50 IPsec VPN tunnels, DMVPN spokes, and site-to-site or remote-access VPN, providing secure connectivity between branches and data centers or remote users.
It offers two integrated WAN uplinks (Gigabit Ethernet or DSL), optional 4G LTE module support, and dual SIM failover for uninterrupted Internet connectivity at branch locations.
With Cisco IOS XE, Smart Licensing, and embedded analytics, you gain centralized policy enforcement, automated software updates, real-time health monitoring, and zero-touch provisioning for rapid deployments.
The router accepts an external 12- to 48 VDC power input or AC-to-DC power adapter and supports PoE+ output on LAN ports to power connected devices without extra injectors.
Yes. The C931J-4P’s four PoE+ ports, Quality of Service (QoS), and integrated SIP support ensure reliable, high-quality VoIP communications for branch offices.
Licensing tiers include Cisco DNA Essentials (basic automation and security), Cisco DNA Advantage (advanced analytics and segmentation), and Cisco Secure Firewall Threat Defense subscriptions.
The C931J-4P supports operating temperatures from 0°C to 40°C, up to 95% relative humidity (non-condensing), and complies with NEBS, RoHS, and FCC Class B emissions standards.
You can buy the C931J-4P from authorized Cisco partners, resellers, or the Cisco online store. Contact a Cisco sales representative for custom quotes and volume discounts.
Cisco offers a limited lifetime warranty with next-business-day replacement, plus optional Cisco SMARTnet service for 24/7 technical support, software updates, and hardware replacement.
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