Cisco 1811W Integrated Services Router Full Product Description

1. Short Overview

Suffix & Variant Breakdown

• 1811: Base fixed dual-FE WAN router with integrated V.92 analog modem backup
• W: Integrated internal dual-band 802.11a/b/g wireless radio with external antenna jacks
• -K9: IOS Advanced IP Services crypto image with AES/3DES IPsec encryption
• -P: PoE-enabled switch variant delivering IEEE 802.3af inline power on all 8 LAN ports (1811WP)

Core Differentiators vs Standard Cisco 1811

1. Factory-integrated dual-band 802.11a/b/g wireless AP radio (absent on the base 1811)
2. Two external RP-TNC antenna connectors for Wi-Fi coverage extension
3. Wireless-specific IOS feature set: WPA2, wireless VLAN segmentation, rogue AP detection, and wireless QoS
4. Identical WAN, switching, memory, and crypto hardware as the non-W 1811

2. Hardware Interface & Physical Specifications

Multi-Media WAN Architecture (Primary + Backup + Auxiliary Wireless)

1. 2 × 10/100BASE-TX Fast Ethernet WAN ports (RJ45)
   Auto-sensing 10/100 Mbps full/half duplex for Metro Ethernet, fiber media converters, or third-party cable/DSL broadband modems; supports policy-based routing, WAN load balancing, and automatic failover between the two primary linksCisco.
2. Internal integrated V.92 analog PSTN modem (RJ11 port)
   Built-in dial backup link that activates automatically when both FE WAN links fail; supports Dial-on-Demand Routing (DDR) for low-cost redundant connectivity over analog copper linesCisco.
3. 2 × USB 2.0 Type-A ports
   For external CAT4/CAT6 USB LTE cellular dongles (third independent wireless WAN backup), USB flash storage for offline config/log archiving, or authentication tokens.

Integrated 8-Port Managed Fast Ethernet LAN Switch

• 8 × 10/100BASE-TX RJ45 LAN ports, fully Layer 2 managed switch with IEEE 802.1Q VLAN trunking, inter-VLAN routing, 802.1x port security, port isolation, and storm controlCisco.
• PoE variant (1811WP): Delivers IEEE 802.3af PoE on all 8 switch ports with a total 120W PoE budget to power IP cameras, VoIP phones, and small wireless APs. Non-PoE 1811W models require external PoE injectors for powered endpoints.

Integrated Wireless Subsystem (Key 1811W Feature)

1. Internal dual-band 802.11a/b/g radio concurrent AP operation (2.4 GHz 802.11b/g + 5 GHz 802.11a)
2. Two RP-TNC external antenna jacks for optional high-gain antennas to expand wireless coverage
3. Wireless security: WPA2-PSK, WEP, 802.1X EAP authentication, wireless VLAN mapping, rogue AP detection, and wireless client isolation
4. Supports multiple SSIDs for segmented guest, employee, and IoT wireless networks

Management & Auxiliary Hardware Ports

1. RJ45 Console port (blue): Local out-of-band CLI management at up to 115.2 kbps baud rate
2. Embedded real-time clock (RTC): Maintains accurate timestamps for syslog logging and digital certificate validation
3. Kensington security lock slot for physical desktop anti-theft protection

Memory & Performance Benchmarks

• Default DRAM: 64MB; maximum expandable DRAM: 256MB
• Default Flash memory: 32MB; maximum supported Flash: 128MB
• Dedicated on-board hardware crypto accelerator: Offloads AES, 3DES, and DES IPsec encryption to eliminate CPU bottlenecks during concurrent VPN sessions
• IP packet forwarding throughput: Up to 18,000 packets per second (pps)
• Maximum concurrent site-to-site IPsec VPN tunnels: 100
• Supported Cisco IOS releases: IOS 12.4T, 15.0M Advanced IP Services K9 images; preloaded Cisco SDM (Security Device Manager) web GUI for simplified zero-touch configuration.

Physical & Power Characteristics

• Form factor: Fanless compact metal desktop chassis; compatible with optional wall-mount brackets
• Power supply: External AC-DC wall adapter (12V DC input; PoE variants require higher-wattage power bricks)
• Front panel LED indicators: System power, WAN link/activity, 8-port switch status, V.92 modem online, Wi-Fi radio status, VPN crypto engine health, and PoE power output (on P variants)
• Operating environment: Indoor dry office deployments only; operating temperature range 0°C to +40°C, non-condensing relative humidity 10–85% RH

3. Cisco IOS Advanced IP Services Feature Suite

Core Routing & WAN Connectivity

• IPv4 routing protocols: Static routes, RIP v1/v2, OSPF, EIGRP, BGP (Advanced IP Services image)
• WAN encapsulations: PPP, HDLC, PPPoE for DSL/cable broadband, DDR dial backup, HSRP for router redundancy, NHRP for DMVPN hub-spoke overlay networks
• Network Address Translation (NAT): Static NAT, dynamic NAT, PAT overloading for multi-user Internet access
• IEEE 802.1Q VLAN trunking, inter-VLAN routing, and Layer 2 switch port security

Voice & Enterprise QoS

• VoIP telephony support: H.323, SIP, RSVP bandwidth reservation for voice media prioritization
• Full QoS toolkit: Low Latency Queuing (LLQ), CBWFQ, WFQ, WRED, DiffServ DSCP marking, Link Fragmentation and Interleaving (LFI), and cRTP header compression to reduce VoIP jitter over slow backup WAN links

Unified Self-Defending Network Security

1. Stateful Context-Based Access Control (CBAC) firewall: Deep application-layer inspection for HTTP, FTP, SIP, H.323, and other business protocols
2. Embedded Intrusion Prevention System (IPS): Signature-based threat detection and inline mitigation of malware and attack traffic
3. Hardware-accelerated VPN stack:
   • IPsec site-to-site tunnels with AES/3DES/DES encryption
   • Cisco Easy VPN Remote for centralized security policy deployment to remote branch locations
   • DMVPN for scalable multi-site hub-spoke overlay VPNs
   • SSL VPN for browser-based remote worker access without client software
4. AAA security framework: RADIUS/TACACS+, PAP/CHAP, 802.1x wired/wireless port authentication, Network Admission Control (NAC) for endpoint compliance
5. URL filtering, dynamic ACLs, and traffic policing for threat containment

Wireless LAN-Specific Features (Unique to 1811W)

• Concurrent dual-band 802.11a/b/g AP operation
• Multiple SSID segmentation with separate VLAN mapping for guest, staff, and IoT wireless clients
• WPA2 enterprise/personal encryption, 802.1X EAP authentication
• Rogue wireless AP detection and containment
• Wireless QoS (WMM) for prioritizing voice/video over Wi-Fi
• Wireless client isolation to prevent peer-to-peer traffic between wireless endpoints

Management & Operations

• CLI command-line management via Console port or SSH v2 remote access
• Web-based Cisco SDM graphical GUI for simplified zero-touch provisioning and security policy management
• SNMP v1/v2c network monitoring, RMON traffic statistics, syslog event logging, and NTP time synchronization
• AutoInstall remote configuration download over WAN links
• Dual Flash bank storage for primary and backup IOS image disaster recovery
• USB mass storage support for offline configuration archives and persistent logging

4. Typical Deployment Scenarios

1. Small retail flagship branch: Dual FE Ethernet primary/secondary business broadband, integrated V.92 analog modem dial backup, PoE switch ports for POS security cameras and VoIP store phones, built-in dual-band Wi-Fi for employee BYOD and guest access, VLAN segmentation to isolate payment terminals from general office traffic, hardware-accelerated IPsec site-to-site VPN to corporate headquarters for PCI DSS compliance.
2. Remote rural SME office: Metro Ethernet primary WAN, analog PSTN modem failover, USB LTE dongle third wireless backup, integrated Wi-Fi AP for staff laptops and IoT devices, LLQ QoS prioritization for business VoIP and video conferencing, stateful firewall and IPS threat protection.
3. Multi-building small campus edge router: 8-port PoE switch powering surveillance cameras and building intercoms, dual redundant fiber WAN uplinks, DMVPN overlay to central headquarters, segregated wireless SSIDs for staff and campus visitors.
4. Small SMB remote worker gateway: Easy VPN SSL remote access for distributed teleworkers, wireless client isolation to secure guest Wi-Fi, URL filtering to restrict non-business web traffic.

5. Standard Package Contents of C1811W / C1811WP

Separately Sold Optional Accessories

• External 12V DC universal AC power adapter (higher wattage required for PoE WP variants)
• CAT5e Ethernet patch cords, RJ11 PSTN telephone cable for the internal V.92 modem
• High-gain external Wi-Fi antennas for extended wireless coverage
• CAT4/CAT6 USB LTE cellular dongles for auxiliary wireless backup WAN
• USB flash storage drives for offline configuration and log archiving
• Wall-mount bracket kit for desktop deployment
• External PoE injectors (for non-PoE base 1811W models)

Software Licensing Information

Short Commercial Catalog Summary