Cisco 1811 Integrated Services Router Full Product Description

1. Short Overview

Suffix & Variant Breakdown

• 1811: Fixed dual-FE WAN router with integrated V.92 analog modem backup
• -K9: Base security image with IPsec/AES crypto
• -W: Integrated 802.11a/b/g wireless radio
• -P: PoE-enabled switch variant delivering IEEE 802.3af inline power on LAN ports

Core Differentiators vs Cisco 1812

1. Integrated V.92 analog PSTN modem for WAN backup (1812 has ISDN BRI S/T instead)
2. Identical port layout, switch capacity, memory, and crypto hardware as the 1812
3. Targeted for markets with analog copper PSTN infrastructure (1812 for ISDN/EMEA deployments)

2. Hardware Interface & Physical Specifications

WAN Connectivity (Dual Redundant Primary + Integrated Backup)

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 broadband modems; supports WAN load balancing, failover, and policy-based routing.
2. Integrated internal V.92 analog modem (RJ11)
   Built-in PSTN dial backup link for automatic failover when both FE WAN links drop; supports DDR (Dial-on-Demand Routing) for backup connectivityCisco.
3. 2 × USB 2.0 ports
   For external USB LTE cellular dongles (additional wireless backup), USB flash storage for offline config/log archiving, or token-based authentication.

Integrated LAN Switch (8-Port Managed Fast Ethernet)

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

Auxiliary Management & Radio Options

1. RJ45 Console port: Local CLI out-of-band management (115.2 kbps max baud)
2. Internal 802.11a/b/g Wi-Fi radio (1811-W variants)
   Dual-band concurrent wireless AP supporting WPA2, WEP, and wireless VLAN segmentation; external antenna connectors for extended coverageCisco.
3. Real-time clock (RTC): Built-in clock for certificate validation and syslog timestamping
4. Kensington security lock slot for physical desktop anti-theft

Memory & Performance Benchmarks

• Default DRAM: 64MB; maximum expandable DRAM: 256MB
• Default Flash memory: 32MB; maximum supported Flash: 128MB
• Embedded dedicated hardware crypto accelerator: Offloads AES, 3DES, DES IPsec encryption to avoid CPU bottlenecks
• Forwarding throughput: Up to 18,000 pps
• Max concurrent IPsec site-to-site VPN tunnels: 100
• Supported IOS releases: Cisco IOS 12.4T, 15.0M advanced IP services images; preloaded SDM (Security Device Manager) web GUI for simplified configurationCisco.

Physical & Power Parameters

• Form factor: Fanless compact desktop metal chassis; wall-mountable via optional brackets
• Power supply: External AC-DC wall adapter (12V DC input; PoE models use higher-wattage adapters)
• Front panel LEDs: System power, WAN link status, switch port link/activity, modem online, Wi-Fi radio, VPN crypto, PoE status
• Operating environment: Indoor dry office use; temperature 0°C to +40°C, non-condensing humidity 10–85% RH

3. Cisco IOS Integrated Feature Suite

Routing & WAN Services

• IPv4 routing protocols: Static, RIP v1/v2, OSPF, EIGRP, BGP (Advanced IP Services)
• WAN features: PPP, HDLC, PPPoE, DDR dial backup, HSRP, NHRP for DMVPN, multi-WAN load balancing
• NAT: Static NAT, dynamic NAT, PAT overloading for multi-user Internet access
• IEEE 802.1Q VLAN trunking, inter-VLAN routing, switch port security

Voice & QoS

• VoIP support: H.323, SIP, RSVP bandwidth reservation
• Enterprise QoS toolkit: LLQ, CBWFQ, WFQ, WRED, DiffServ DSCP marking, LFI, cRTP VoIP header compression for low-speed backup links

Unified Self-Defending Network Security

1. Stateful CBAC firewall: Deep packet inspection, application filtering for HTTP, FTP, SIP, H.323
2. Inline Intrusion Prevention System (IPS): Signature-based threat detection and mitigation
3. Full VPN stack (hardware-accelerated):
   • IPsec (AES/3DES/DES) site-to-site tunnels
   • Easy VPN Remote for centralized policy push to remote workers
   • DMVPN for hub-spoke multi-site overlay networks
   • SSL VPN for browser-based remote access
4. AAA security: RADIUS/TACACS+, PAP/CHAP, 802.1x port authentication, NAC endpoint compliance
5. URL filtering, anti-malware integration, dynamic ACLs

Management & Operations

• CLI via console, SSH v2 remote access
• Web-based SDM GUI for zero-touch simplified deployment
• SNMP v1/v2c, RMON traffic monitoring, syslog logging, NTP time sync
• AutoInstall remote config download, dual Flash bank for IOS image backup recovery
• USB storage support for offline config archives and logging

4. Typical Deployment Scenarios

1. Small retail branch: Dual FE Ethernet primary/secondary business broadband, integrated V.92 modem dial backup, PoE switch ports for POS cameras and VoIP phones, VLAN segmentation to isolate payment terminals from employee Wi-Fi, IPsec site-to-site VPN to corporate HQ for PCI compliance.
2. Remote rural SME office: Metro Ethernet primary WAN, analog PSTN modem failover, optional USB LTE dongle third backup, integrated Wi-Fi for staff BYOD, IPS firewall 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.
4. Small SMB remote worker gateway: Easy VPN SSL remote access for teleworkers, QoS prioritization for business VoIP and video conferencing.

5. Standard Package Contents

Separately Sold Optional Accessories

• External 12V DC power adapter (higher wattage for PoE variants)
• CAT5e Ethernet patch cords, RJ11 PSTN telephone cable for internal modem
• External USB LTE cellular dongles for extra wireless backup
• USB flash drives for offline config storage
• Wall-mount bracket kit
• External PoE injectors (for non-PoE base models)
• Dual-band Wi-Fi antennas (for 1811-W wireless variants)

Software Licensing Information

Short Commercial Catalog Summary