Model | Cisco 891-24X |
WAN Interfaces | 2-port GE or 2‑port SFP |
LAN Interfaces | 24-port 10-/100-/1000-Mbps managed switch (8-ports PoE capable with integrated power supply) |
802.11a/g/n Option | No |
Integrated USB 2.0/AUX/Console | Yes |
Integrated Dial Backup | No |
Feature | Specification |
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 (L2TPv3) |
● 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, Extended 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 features | Secure 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 |
● RADIUS and TACACS+ |
● 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) |
● HSRP |
● MHSRP |
● 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) |
● IPv6 DHCP |
● OSPFv3 |
● BGP4+ |
● IPv6 Path Maximum Transmission Unit (PMTU) |
● IPv6 Neighbor Discovery |
● IPv6 Stateless Address Auto Configuration (SLAAC) |
● 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 | ● NBAR2 |
● Flexible NetFlow (FNF) |
● Performance Agent |
Number of recommended users | 50 |