490.73 USD
Cisco C891F-K9 Ethernet Integrated Services Router V.92 and ISDN Backup, 8-Gigabit Ethernet Ports, 802.11n Access Point, Small Form-factor Pluggable
Ethernet integrated services router with 8 Gigabit ports, 802.11n access point and SFP, featuring V.92 and ISDN backup capabilities.
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Cisco C891F-K9 is a high‑performance, integrated services router designed to deliver robust connectivity and advanced security features in enterprise environments. With its combination of 8 Gigabit Ethernet ports, an embedded 802.11n access point, and a single Small Form‑factor Pluggable (SFP) slot, this device provides versatile networking options for both wired and wireless infrastructures.
Core Connectivity Features
The router boasts eight 1 GbE LAN ports that support full duplex operation at up to 1000 Mbps. These ports are ideal for high‑throughput local area networks, enabling fast data transfer between servers, workstations, and storage devices.
A dedicated SFP port allows the installation of a fiber optic transceiver, providing scalable uplink options for long‑haul or high‑bandwidth connections. The device also includes an integrated Ethernet WAN interface (RJ‑45), ensuring seamless connectivity to broadband services.
Wireless Integration
The built‑in 802.11n access point supports dual‑band operation, delivering reliable wireless coverage for up to 50 users simultaneously. With support for IEEE 802.11d, IEEE 802.1Q (VLAN tagging), and IEEE 802.1x (port‑based authentication), the router offers flexible wireless network segmentation and secure access control.
Advanced Routing Capabilities
The Cisco C891F-K9 runs on Cisco IOS, providing a comprehensive suite of routing protocols including BGP, EIGRP, OSPF, RIP‑1, and RIP‑2. These protocols enable dynamic path selection, optimal traffic engineering, and rapid convergence in complex network topologies.
Additional routing features include Dynamic Host Configuration Protocol (DHCP), Domain Name System (DNS), NAT, and Access Control Lists (ACLs). The router also supports L2TP, L2TPv3, and IPsec VPN for secure remote connectivity.
Security Architecture
Security is a cornerstone of the C891F-K9 design. It incorporates robust firewall capabilities powered by Cisco IOS, with support for HTTPS, SSL/TLS, 3DES, AES (128/192/256‑bit), and DES encryption algorithms. The device also offers IPsec VPN for encrypted site‑to‑site or remote access connections.
Management protocols include SNMPv3, SSH, CLI, HTTP, RADIUS, and TACACS+, ensuring secure configuration and monitoring. The router’s firmware is stored in a 256 MB flash memory module, providing ample space for IOS images and custom configurations.
Built‑in Telephony Support
The C891F-K9 features an integrated V.92 modem and ISDN backup, allowing the device to maintain voice connectivity even when primary broadband links fail. This redundancy is critical for businesses that rely on VoIP or other telecommunication services.
Power and Environmental Specifications
The router operates from an AC power source (100–240 V) and supports Power over Ethernet (PoE), enabling it to receive power through its Ethernet ports. Its operating temperature range is 0 °C to 40 °C, with a non‑operating altitude tolerance up to 4570 m and an operating altitude of 0–3000 m.
Relative humidity during operation should be maintained between 10% and 85%, while storage conditions can tolerate 5% to 95% relative humidity. The device’s robust chassis ensures reliable performance in a variety of environmental conditions.
User Capacity and Scalability
Designed for small to medium‑sized enterprises, the C891F-K9 supports up to 50 concurrent users. Its modular architecture allows future expansion through additional SFP modules or by integrating with other Cisco ISR series devices.
Management and Monitoring
Network administrators can manage the router via multiple interfaces: CLI, HTTP, SSH, SNMPv3, RADIUS, and TACACS+. These tools provide granular control over routing policies, security settings, and performance metrics.
Conclusion
The Cisco C891F-K9 delivers a comprehensive blend of wired and wireless connectivity, advanced routing protocols, robust security features, and telephony redundancy. Its compact form factor, combined with high throughput and flexible management options, makes it an ideal solution for organizations seeking reliable, scalable networking infrastructure.
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| Tags | Gigabit Ethernet Cisco C891F-K9 Form-factor Pluggable ISDN Backup 8-Gigabit Ethernet Ports 1-Year Limited Hardware Cisco C891F-K9 Ethernet Router V.92 Cisco ISR891F-K9 Integrated |
| Identifiers | |
| Brand | ![]() Cisco is a technology company that provides networking, telecommunications, and security products and services. The company was founded in 1984 and is headquartered in San Jose, California. |
| MPN | Cisco C891F-K9 |
| ID | 18772436 |
| Dimensions / Weight | |
| Key Features | |
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AC input voltage The range of alternating current voltage that the product accepts from its power source, expressed in volts (V). It indicates the minimum and maximum supply voltages compatible with the device across different regions.
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100 - 240 V |
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Access Control List ACL Indicates whether the product supports an Access Control List (ACL) feature, allowing administrators to define rules that permit or deny network traffic based on criteria such as IP address, port number, or protocol.
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Yes |
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Antenna type The classification of an antenna used in a device, indicating its physical configuration or mounting style such as external, internal, integrated, directional, omnidirectional, or multi‑antenna setups (e.g., "2x2", "4 x External"). It helps buyers understand how the antenna is attached and what signal coverage it may provide.
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Not supported |
| Cabling technology | 1000 Base |
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Colour The colour or combination of colours that a product is available in, expressed as common names such as "Black", "Silver" or comma‑separated lists like "Black, White". It indicates the visual appearance of the item for consumers.
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Black, Grey |
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Combo SFP ports quantity Represents how many combo SFP (Small Form-factor Pluggable) ports are physically present on the product. The value is a simple integer indicating the total count of these ports, regardless of speed or interface variant.
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1 |
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Ethernet interface type A list of the Ethernet standards that a product supports, such as Fast Ethernet (10/100 Mbps), Gigabit Ethernet (1 Gbps), 2.5 GbE, 10 GbE, and other variants. Each value is a free‑text label describing one supported interface; multiple values are separated by commas when the device offers more than one speed or generation.
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Gigabit Ethernet |
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Ethernet LAN ports Represents the total count of Ethernet LAN (RJ‑45) interfaces available on a product. The value is an integer indicating how many physical Ethernet ports are present, regardless of speed or generation.
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8 |
| Firewall security | Cisco IOS |
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Flash memory The total amount of internal flash memory available in a device, expressed as a data size (e.g., megabytes or gigabytes). This attribute indicates how much data can be stored on the device’s built‑in flash storage and is useful for comparing storage capacity across products.
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256 MB |
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Internal modem Indicates whether the product includes a modem that is installed inside the device, such as an integrated cellular or Wi‑Fi module. A value of "Yes" means the modem is built into the chassis; "No" indicates it requires an external accessory.
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Yes |
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Management protocols A list of network protocols that a device can use for configuration, monitoring and remote management, such as SNMP, HTTP/HTTPS, Telnet, SSH or other standard interfaces. Each protocol is represented by its common name and may be separated by commas or slashes in the source data.
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SNMPv3, SSH, CLI, HTTP, RADIUS, TACACS+ |
| Networking standards | IEEE 802.11d,IEEE 802.1Q,IEEE 802.1x,IEEE 802.3af |
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Non-operating altitude The altitude interval (in meters) at which a product or component ceases to function correctly due to environmental factors such as reduced atmospheric pressure, temperature changes, or other elevation‑related effects. The value is expressed as a minimum–maximum range and applies to any device that has documented limits for operation above or below certain heights.
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0 - 4570 m |
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Number of Users The total number of individual users that can be supported or accessed by the product or service. It represents a count of distinct user accounts, connections, or licenses and is expressed as an integer value.
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50 user(s) |
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Operating altitude The range of altitudes (in meters) at which a product or component can operate reliably without performance degradation due to changes in atmospheric pressure, temperature, or other altitude‑related effects.
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0 - 3000 m |
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Operating relative humidity The range of relative humidity (in percentage) within which the product is designed to operate reliably. Values are expressed as a minimum–maximum interval such as "20 - 80 %" and indicate the acceptable environmental moisture level for optimal performance.
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10 - 85 % |
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Operating temperature The range of temperatures in which a product can safely operate without risk of damage or performance degradation. Values are expressed in degrees Celsius (°C) and may represent a single temperature, a minimum–maximum interval, or an average operating point.
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0 - 40 °C |
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Power source type The main electrical supply that powers the device, such as mains electricity (AC), battery, USB power, PoE, or a combination of these options.
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AC |
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Routing protocols A list of routing protocols that a device can use to forward network traffic, such as OSPF, RIP, BGP, EIGRP, IS‑IS, and VRRP. Each protocol is represented by its standard name and may be separated by commas or slashes in the source data.
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BGP,EIGRP,OSPF,RIP-1,RIP-2 |
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Security algorithms A list of cryptographic and authentication methods that a device can use for secure communication or data protection. Each entry represents a distinct algorithm or protocol, such as encryption ciphers (e.g., AES, WEP), authentication mechanisms (e.g., RADIUS, WPA‑PSK), or network security protocols (e.g., HTTPS, SSL/TLS). The values are typically separated by commas and may include both technical identifiers and consumer‑friendly labels.
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3DES,128-bit AES,192-bit AES,256-bit AES,DES,HTTPS,IPSEC,SSL/TLS |
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Storage relative humidity The range of relative humidity (expressed as a percentage) within which the storage device is designed to operate reliably. Values are given as a minimum–maximum interval such as "10 - 90 %" and indicate the acceptable environmental moisture level for optimal performance.
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5 - 95 % |
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Storage temperature The range of temperatures in which a device can safely operate without risk of damage or performance degradation. Values are expressed in degrees Celsius (°C) and may represent a single temperature, a minimum–maximum interval, or an average operating point.
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0 - 65 °C |
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Supported network protocols A list of network communication protocols that a device can use or support, such as TCP/IP, HTTP, HTTPS, FTP, DHCP, DNS, and various wireless standards. Each protocol is represented by its standard name and may be separated by commas or slashes in the source data.
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L2TP, L2TPv3, NAT, DHCP, DNS, ACLs, OSPF, BGP |
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USB version The specific version of the USB standard that a product supports, expressed as a generation number and optional descriptive suffix (e.g., "3.2 Gen 1" or simply "3.0"). This attribute indicates the data‑transfer capabilities and compatibility with USB devices.
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2.0 |




