Cisco C891F-K9 is ideal for managed services small branch or virtual office deployments and comes with fixed configurations. It offers a platform that is cost optimized to fit your business needs starting with 2 WAN connectivity options - Gigabit Ethernet and Fiber. This router is loaded with the practical stuff needed for the branch office.

C891F-K9 Specifications
WAN Interfaces1-port GE or 1-port SFP
1-port FE
LAN Interfaces8-port 10-/100-/1000-Mbps managed switch
(4-ports PoE capable with 125W power supply
802.11a/g/n OptionYes
Cisco CleanAir technology
Integrated USB 2.0/AUX/
Integrated Dial BackupV.92 analog modem
Cisco IOS Software: Advanced IP Features Set (Default)
IP and IP services? Routing Information Protocol Versions
1 and 2 (RIPv1 and RIPv2)
? Generic routing encapsulation (GRE) and
multipoint GRE (MGRE)
? Cisco Express Forwarding
? Standard 802.1d Spanning Tree Protocol
? Layer 2 Tunneling Protocol (L2TP)
? Layer 2 Tunneling Protocol Version 3
? Network Address Translation (NAT)
? Dynamic Host Configuration Protocol
(DHCP) server, relay, and client
? Dynamic Domain Name System (DNS)
? DNS Proxy
? DNS Spoofing
? Access control lists (ACLs)
? IPv4 and IPv6 Multicast
? Open Shortest Path First (OSPF)
? Border Gateway Protocol (BGP)
? Performance Routing (PfR)
? Enhanced Interior Gateway
Routing Protocol (EIGRP)
? Virtual Route Forwarding (VRF) Lite
? Next Hop Resolution Protocol (NHRP)
? Bidirectional Forwarding Detection (BFD)
? Web Cache Communication Protocol (WCCP)
xDSL? True Multimode VDSL2 and
ADSL2+ over
Annex A, B, J, and M including traditional
G.DMT and T1.413
? World-class interoperability with
industry-standard DSL access multiplexer
(DSLAM) chipsets
? Highest field reliability with
Impulse Noise
Protection over REIN/SHINE,
INP-Delay, G.INP, Physical Layer
Retransmission, SRA, and Bitswap
? VDSL2 Persistent Storage Device
(PSD) profiles up to 17a/b with
support for Spectral Shaping
? VDSL2 Vectoring to offer blazing
fiber speeds over copper
? Support for 4-pair multimode
G.SHDSL; that is, ATM and EFM
? Remote management with
TR069 and CWMP
? Investment protection with GE and
SFP for future fiber that could replace
xDSL deployment
Switch features? Auto Media Device In/Media Device Cross
Over (MDI-MDX)
? 25 802.1QVLANs
? MAC filtering
? Four-port 802.3af and Cisco compliant PoE
? Switched Port Analyzer (SPAN)
? Storm Control
? Smart ports
? Secure MAC address
? Internet Group Management Protocol
Version 3 (IGMPv3) snooping
? 802.1x
Security featuresSecure connectivity:
? Secure Sockets Layer (SSL)
VPN for secure
remote access
? Hardware-accelerated DES,
3DES, AES 128,
AES 192, and AES 256
? Public-key-infrastructure
(PKI) support
? Fifty IPsec tunnels
? Cisco Easy VPN Client and Server
? NAT transparency
? Dynamic Multipoint VPN (DMVPN)
? Tunnel-less Group Encrypted
Transport VPN
? VRF-aware IPsec
? IPsec over IPv6
? Adaptive control technology
? Session Initiation Protocol (SIP)
application-layer gateway
? Cisco IOS Firewall:
? Zone-Based Policy Firewall
? VRF-aware stateful inspection routing firewall
? Stateful inspection transparent firewall
? Advanced application inspection and control
? Secure HTTP (HTTPS), FTP, and
Telnet Authentication Proxy
? Dynamic and static port security
? Firewall stateful failover
? VRF-aware firewall
? Cisco ScanSafe Connector
? Cisco IOS Software black and white lists
? Integrated threat control:
? Intrusion Prevention System (IPS)
? Control Plane Policing
? Flexible Packet Matching
? Network foundation protection
Quality of Service (QoS)? Low-Latency Queuing (LLQ)
? Weighted Fair Queuing (WFQ)
? Class-Based WFQ (CBWFQ)
? Class-Based Traffic Shaping (CBTS)
? Class-Based Traffic Policing (CBTP)
? Policy-Based Routing (PBR)
? Class-Based QoS MIB
? Class of service (CoS)-to-differentiated
services code point (DSCP) mapping
? Class-Based Weighted Random Early
Detection (CBWRED)
? Network-Based Application
Recognition (NBAR)
? Link fragmentation and interleaving (LFI)
? Resource Reservation Protocol (RSVP)
? Real-Time Transport Protocol
(RTP) header compression (cRTP)
? Differentiated Services (DiffServ)
? QoS preclassify and prefragmentation
? Hierarchical QoS (HQoS)
Management? Cisco Configuration Professional
? Cisco Configuration Express
? Cisco Configuration Engine support
? Cisco AutoInstall
? Cisco IP Service-Level Agreement (IP SLA)
? Cisco IOS Embedded Event Manager (EEM)
? CiscoWorks
? Cisco Security Manager
? Telnet, Simple Network Management Protocol
Version 3 (SNMPv3), Secure Shell (SSH)
Protocol, command-line interface (CLI),
and HTTP management
? Out-of-band management with ISDN S/T
port or external modem through a virtual
auxiliary port on models supporting those
interfaces; refer to Table 2 for details
? Cisco Wireless Control System (WCS)
for management of unified access points in
models supporting WLAN; on models supporting
WLAN, refer to Table 2 for details
High availability? Virtual Router Redundancy Protocol
(VRRP) (RFC 2338)
? Dial backup with external modem through
virtual auxiliary port
? Dial backup with ISDN S/T or
V.92 Analog modem port
Metro Ethernet? Ethernet OA&M
? Ethernet Local Management Interface (E-LMI)
? IP SLA for Ethernet
IPv6? IPv6 addressing architecture
? IPv6 name resolution
? IPv6 statistics
? IPv6 translation: Transport packets between
IPv6-only and IPv4-only endpoints
(NAT-Protocol Translation)
? Internet Control Message
Protocol Version 6 (ICMPv6)
? OSPFv3
? BGP4+
? IPv6 path maximum transmission
unit (PMTU)
? IPv6 Neighbor Discovery
? IPv6 stateless address autoconfiguration
? IPv6 Multicast Routing
Unified WLAN management? Unified access-point features:
? Supported by wireless LAN controller
and Cisco WCS
? Configurable local or central switching
for Hybrid Remote Edge Access
Point (HREAP) mode
? Radio management through
Cisco WCS
? Transparent roaming with mobility groups
Application visibility and control? Cisco Wide Area Application Services (WAASx)
? Flexible NetFlow (FNF)
? Performance Agent
Number of recommended users50
WLAN Features (Available with Wireless Option)
Standard 802.11 a/g/n access point? Optional on Cisco 890 Series models
WLAN hardware? Support for Cisco CleanAir technology on
Cisco 897 and 891F
? Automatic rate selection for 802.11a/g/n
? Noncaptive RPTNC omnidirectional dipole
antennae; 2-dBi gain @ 2.4 GHz, 5-dBi gain
@ 5 GHz
? 2 x 3 multiple input, multiple output (MIMO)
radio operation
? Wi-Fi 802.11n Draft v2.0 certified
WLAN software features? Autonomous or unified access point
? Cisco WCS support for monitoring of
autonomous-mode access points
? Option to maximize throughput or
maximize range
? Software-configurable transmit power
? Radio roles, including access point,
root bridge, nonroot bridge, and
workgroup bridge
? Wi-Fi Multimedia (WMM) certification
? Traffic specifications (TSPEC) Call
Admission Control (CAC) to ensure
voice quality is maintained
? Unscheduled Automatic Power
Save Delivery (UPSD) to reduce latency
WLAN security features? Standard 802.11i
? Wi-Fi Protected Access (WPA) and
? EAP authentication: Cisco Light Extensible
Authentication Protocol (LEAP), Protected
Extensible Authentication Protocol (PEAP),
Extensible Authentication Protocol Transport
Layer Security (EAP TLS), Extensible
Authentication Protocol-Flexible Authentication
via Secure Tunneling (EAP-FAST), Extensible
Authentication Protocol-Subscriber
Information Module (EAP-SIM), Extensible
Authentication Protocol-Message Digest
Algorithm 5 (EAP-MD5), and Extensible
Authentication Protocol-Tunneled TLS
? Static and dynamic Wired Equivalent
Privacy (WEP)
? Temporal Key Integrity Protocol/Simple
Security Network (TKIP/SSN) encryption
? MAC authentication and filter
? User database for survivable local
authentication using LEAP and EAP-FAST
? Configurable limit to the number of
wireless clients
? Configurable RADIUS accounting for
wireless clients
? Preshared keys (PSKs) (WPA-small
office or home office [WPA-SOHO])
CertificationsNote: Due to new FCC WiFi June 2016
regulation (FCC rules for part 15.409), the
WLAN radio used in the ISR's (specifically
C819 –A WiFi Domain with AP802
dual 802.11 radio) Cisco will be issuing a
new grant for the 5GHz dual 802.11n radio.

The specific reason for the change is due
to the inability of the radio to detect the various
radar pulses (DFS function) over the entire
bandwidth of the channels in the 5250-5350
and the 5500-5700 A radio channel bands
(which will be disabled). As a consequence
the radio will now operate from 5150-5250
and 5745-5850 A radio bands. This will
provide a total of nine channels in the 5GHz
Service Set Identifiers (SSIDs) and Multiple Broadcast SSIDs? 16
Wireless VLANs? 14 (encrypted and nonencrypted VLANs)
Default and maximum DRAM? Default 512MB
? Up to 1 GB on Cisco 892FSP, 896VA, 897VA,
897VAB, 898EA, 891F, and 891-24X data
models; upgrade option available
Default and maximum flash memory? 256 on all Cisco 890 ISR models; not
WAN? Refer to Table 2 for details
LAN switch? Refer to Table 2 for details
Separate console and auxiliary ports? RJ-45
USB 2.0? One USB 2.0 port available on Cisco 892FSP,
896VA, 897VA, 897VAB, 898EA, 891F,
and 891-24X
? USB devices supported:
? USB flash memory
ISDN BRI S/T? Refer to Table 2 for details
Inline PoE? Optional internal adapter for inline PoE on
4 switch ports for IP phones or external
wireless access points; 802.3af-compliant
and Cisco PoE-compliant
? No PoE support on Cisco 892FSP
Wireless specifications? 2.4 and 5 GHz
Data rates supported? 802.11a: 6, 9, 12, 18, 24, 36, 48, and 54 Mbps
? 802.11b: 1, 2, 5.5, 6, 9, and 11 Mbps
? 802.11g: 1, 2, 5.5, 6, 9, 11, 12, 18, 24, 36,
48, and 54 Mbps
? 802.11n: 1, 2, 5.5, 6, 9, 11, 12, 18, 24, 36,
48, 54, and m0-m15
Maximum transmit power (2-channel aggregate)? 802.11a: 15dBm
? 802.11b: 20 dBm
? 802.11g: 17 dBm
? 802.11n: 16 dBm
Note: Maximum power setting is subject to
change by channel and by region, depending
on regulations.
Physical dimensions and weightWeight: 5.5 lb (2.5 kg) maximum
Product dimensions:
? H x W x D =1.82 x 12.71 x 9.78 in.
(4.62 x 32.28 x 24.84 cm) (includes rubber feet)
? H x W x D = 1.75 x 12.71 x 9.78 in.
(4.45 x 32.28 x 24.84 cm) (without rubber feet)
External power supplyProduct power specifications:
? AC input voltage: Universal 100 to 240 VAC
? Frequency: 50 to 60 Hz
? Maximum output power: 60W
? Output voltages: 12 VDC
? Optional PoE:
? Separate 80W PoE power supply for Cisco 891
and 892 ISRs
? Single 125W power supply required for Cisco
896, 897, 898, and 891F for router and PoE
? The Cisco 891-24X uses the internal power
supply for PoE
? External output voltage: 48 VDC
Approvals and compliance? Emission
? 47 CFR Part 15: 2006
? CISPR22: 2005
? EN300386: V1.3.3: 2005
? EN55022: 2006
? EN61000-3-2: 2000 [Inc amd 1 & 2]
? EN61000-3-3: 1995 [+ amd 1: 2001]
? ICES-003 Issue 4: 2004
? KN 22: 2005
? VCCI: V-3/2006.04
? Immunity
? CISPR24: 1997 [+ amd 1 & 2]
? EN300386: V1.3.3: 2005
? EN50082-1: 1992
? EN50082-1: 1997
? EN55024: 1998 [+ amd 1 & 2]
? EN61000-6-1: 2001
Environmental operating range? Nonoperating temperature: -4 to 149°F
(-0 to 65°C)
? Nonoperating humidity: 5 to 95% relative
humidity (noncondensing)
? Nonoperating altitude: 0 to 15,000 ft
(0 to 4570m)
? Operating temperature: 32 to 104°F
(0 to 40°C)
? Operating humidity: 10 to 85% relative
humidity (noncondensing)
? Operating altitude: 0 to 10,000 ft (0 to 3000m)

Related products