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CISCO871-K9
Dual Ethernet Security Router
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CISCO871-K9 is a fixed, integrated services router engineered for small to medium branch offices with a robust architecture that incorporates state‑of‑the‑art routing and VPN capabilities. It delivers flexible power options through an approved AC power supply, equipped with dedicated WAN and LAN interfaces that support 10/100 Ethernet, ensuring performance and security with integrated firewall and QoS features.
Designed to support business-critical applications, the CISCO871-K9 offers integrated services such as voice and VPN functions while providing configurable interfaces for modular adaptability. With efficient throughput of approximately 0.15 Gbps and built‑in redundancy mechanisms, it is ideally suited for secure connectivity and scalability in modern network environments.
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In a global retail chain, the Cisco 871-K9-Dual Ethernet Security Router establishes hardware-accelerated IPsec tunnels to interconnect 50+ remote stores with the corporate data center over public internet. Benefit: Delivers encrypted, low-latency data transfers with AES-256, achieving PCI DSS compliance and 99.9% uptime for point-of-sale operations.
In a smart manufacturing plant, the Cisco 871-K9 creates separate VLANs and applies stateful-packet-inspection (SPI) firewall policies to isolate IoT sensors and employee BYOD devices from the core network. Benefit: Prevents lateral threat movement and zero-day exploits while maintaining gigabit-class throughput for critical control systems.
A professional services firm leverages the Cisco 871-K9 as a single-box edge device to handle WAN routing, NAT, SPI firewall and voice VLAN for IP-telephony. Benefit: Streamlines network management, prioritizes VoIP traffic for crystal-clear calls, and reduces hardware footprint—cutting CapEx/OpEx by up to 40%.
To get the detailed certification, please go to the Compliance Center.
| CISCO871-K9 |  CISCO861-K9 |  C881SRST-K9 |  CISCO886-K9 |  CISCO881G-V-K9 | |
|---|---|---|---|---|---|
| 5G Support | No | No | No | No | No |
| Architecture | Fixed | Fixed | Fixed | Fixed | Fixed |
| Broadband | N/A | DSL | DSL | DSL | N/A |
| Built-in Security Features | Firewall / Intrusion Prevention | Firewall / Intrusion Prevention | Firewall, Intrusion Prevention, Malware Protection | Firewall, Intrusion Prevention, Malware Protection | Firewall / IPSec |
| Compliance Standards | FCC / CE | FCC / CE / RoHS | FCC, CE, RoHS | FCC, CE | FCC / CE |
| Connectivity Type | Wired | Wired | Wired | Wired | Wired |
| Depth | N/A | 7.0 inches | N/A | N/A | N/A |
| Device Type | Router | Router | Router | Router | Router |
| EMC | N/A | N/A | N/A | N/A | N/A |
| Ethernet Technology | 10/100 | 10/100 | 10/100 | 10/100/1000 | 10/100 |
| Expansion Slots | N/A | N/A | N/A | EHWIC | EHWIC |
| Features | VPN / Firewall / IPv6 Compatible / VoIP | VPN / Firewall / IPv6 Compatible | VPN, NAT, Firewall, QoS, SRST, Voice, Integrated Security | VPN, Firewall, IPv6 Compatible | VPN / IPv6 Compatible / Firewall / VoIP |
| Firewall Features | Yes | Yes | Yes | Yes | Yes |
| Flash Memory | 128 MB | 128 MB | 128 MB | 256 MB | 128 MB |
| Form Factor | Desktop | Desktop | Desktop | Desktop | Desktop |
| Height | N/A | 1.0 inches | N/A | N/A | N/A |
| High Availability Support | Not Supported | Supported | Supported | Supported | Supported |
| Integrated Services | Voice | Voice / Video / WAN Optimization | Voice, Secure WAN, Unified Communications | Voice / Video | Voice / Video / WAN Optimization |
| Interface Ports | RJ-45 | RJ-45 | RJ-45 | RJ-45 | RJ-45 / Console Port |
| LAN Ports | 4 LAN Ports | 4 LAN Ports | 4 LAN Ports | 8 LAN Ports | 4 LAN Ports |
| Management | Managed | Managed | Managed | Managed | Managed |
| Memory | 256 MB | 256 MB | 256 MB | 512 MB | 256 MB |
| Modular Slots Available | N/A | N/A | N/A | 1 Slot | 1 Slot |
| Network Protocols | IPv4, IPv6 | IPv4 / IPv6 | IPv4, IPv6 | TCP/IP, UDP, ICMP, ARP, RIP | IPv4 / IPv6 |
| Power | 26W | 60W | 20W | 65 Watt | 60 Watts |
| Power Source | AC Power Supply | AC Power Supply | AC Power Supply | AC Power Supply / Redundant | AC Power Supply |
| Product Name | CISCO871-K9 Integrated Services Router | CISCO861-K9 Integrated Services Router | Cisco 881SRST-K9 Integrated Services Router | Cisco 886 Integrated Services Router | Cisco 881G Integrated Services Router |
| Product Type | Enterprise Router | Enterprise Router | Enterprise Router | Enterprise Router | Branch Router |
| QoS Features | Supported | Supported | Supported | Supported | Supported |
| Remote Management | CLI / SNMP / HTTP / HTTPS | Telnet / SSH / SNMP | SSH / Telnet / SNMP | SSH, Telnet, SNMP | Telnet / SSH / SNMP |
| Routing Protocols | OSPF / EIGRP / RIP / Static Routing | OSPF / EIGRP / RIP / Static Routing | OSPF / EIGRP / RIP / BGP / Static Routing | OSPF / BGP / EIGRP / RIP / Static Routing | OSPF / BGP / EIGRP / RIP / Static Routing |
| Safety | N/A | N/A | N/A | UL, cUL, CE, FCC | N/A |
| Speed/Capacity | N/A | Fast Ethernet | 25 Mbps | Gigabit | N/A |
| Stacking Capability | No | No | No | No | No |
| Telecom | N/A | N/A | N/A | N/A | N/A |
| Throughput Capacity | 0.15 Gbps | 25 Mbps | 0.025 Gbps | 0.1 Gbps | 75 Mbps |
| Use Case | Business | Small Business / Enterprise | Enterprise, Branch Office | Business | Business / Small Business / Branch Office |
| VPN Support | IPSec / SSL VPN | IPSec / SSL VPN | IPSec / DMVPN / FlexVPN | IPSec / SSL VPN | IPSec/DMVPN |
| WAN Configuration | WAN | WAN | WAN | Dual WAN | WAN |
| WAN Ports | 1 WAN | 1 WAN | 1 WAN | 2 WAN | 1 WAN |
| Weight | N/A | 4 lbs | N/A | N/A | N/A |
| Wi-Fi Standard | N/A | N/A | N/A | N/A | N/A |
| Width | N/A | 8.5 inches | N/A | N/A | N/A |
| Wireless Support | No | No | No | No | No |
The Cisco 871-K9 offers reliable dual Ethernet performance. It's secure, efficient, and easy to manage, making it ideal for our business's networking and security needs.
Cisco 871-K9 is an excellent choice for small businesses. Dual Ethernet ports provide flexibility, and the router ensures reliable performance and strong security.
Solid performance with dual Ethernet. Cisco 871-K9 offers reliable internet and secure connections, perfect for our growing network's needs.
Cisco 871-K9 provides excellent security and performance. Its dual Ethernet support is perfect for our small office, ensuring reliable and secure internet access.
Reliable and secure. Cisco 871-K9 offers dual Ethernet connectivity, ensuring our network runs smoothly and securely for business operations.
The Cisco 871-K9 is a compact, dual-Ethernet WAN router with integrated security, ideal for small offices and remote sites.
The Cisco 871-K9 delivers up to 25 Mbps of firewall throughput and up to 12 Mbps of VPN throughput for secure connectivity.
It includes two 10/100 Mbps WAN Ethernet ports and four 10/100 Mbps LAN Ethernet ports for flexible network segmentation.
Yes, it supports IPsec VPN with DES, 3DES, and AES encryption, plus hardware acceleration for up to 225 Mbps.
It provides Stateful Packet Inspection, zone-based firewall, NAT, IPS, and intrusion prevention for robust threat protection.
Yes, dual-WAN interfaces support automatic failover and load balancing to ensure continuous Internet uptime.
It offers advanced QoS with traffic shaping, policing, and priority queuing to optimize voice and data performance.
Management is via Cisco IOS CLI, Cisco Configuration Professional GUI, SNMP, Telnet, and secure SSH for remote access.
It ships with an internal AC power supply (100–240V) and supports optional external DC adapter for flexible installations.
It runs Cisco IOS Software Release 15.x with integrated security, VPN, and routing feature sets.
It is UL, cUL, CE, FCC, and IC certified, meeting global safety and electromagnetic compliance standards.
The router measures 6.0 x 8.9 x 1.5 inches (W x D x H) and weighs 2.2 pounds, making it ideal for desktop or wall mount.
Ideal for small offices, retail branches, kiosks and home offices requiring secure Internet and VPN connectivity.
Use Cisco SKU CISCO871-K9 for the base router; contact a Cisco partner for optional VPN license upgrades and support contracts.
It includes a one-year limited hardware warranty; Cisco SMARTnet provides 24×7 support and advance replacement options.
The 871-K9 focuses on dual-WAN simplicity and cost efficiency, while the 881 series adds integrated 802.11n Wi-Fi and enhanced performance.