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C2811-3G-G-SEC/K9
Cisco 2811, HWIC-3G-GSM, 128F/512D DRAM, Adv Security
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C2811-3G-G-SEC/K9 is a modular enterprise router engineered for robust performance with integrated security and versatile connectivity. Designed with a modular architecture, it offers flexible expansion through NIM/EHWIC slots while supporting a range of power options via an external AC supply; its dual-use WAN/LAN configuration and integrated security services make it an ideal solution for secure branch networking.
C2811-3G-G-SEC/K9 delivers high throughput and redundant performance with advanced VPN features, ensuring reliable encrypted communications for business-critical applications. Its built-in support for voice, VPN, and firewall functions, coupled with modular upgrade capabilities and multiple routing protocols, makes it well suited for enterprise use cases that demand secure, resilient, and scalable networking.
C2811-3G-G-SEC/K9 price is $1,792.00, a 54.6% saving from the Cisco list price of $3,950.00. C2811-3G-G-SEC/K9 is in stock and available for next-day dispatch. (terms applied)
Request bulk order quote for C2811-3G-G-SEC/K9 for additional pricing. Browse the full Router Isr 2800 series or explore all Cisco products.
Scenario: A retail chain’s rural store relies on an MPLS link that suffers frequent outages. By deploying the Cisco 2811 (C2811-3G-G-SEC/K9) with HWIC-3G-GSM and 128F/512D DRAM, the store instantly switches to secure 3G backup whenever primary WAN fails. Outcome: 99.9% network uptime, uninterrupted POS transactions, and advanced security enforcement—including Stateful Firewall, IPS and VPN encryption—without manual intervention.
Scenario: A government agency requires on-the-fly, encrypted communications for mobile command centers in disaster zones. The Cisco 2811-SEC router with HWIC-3G-GSM provides instant 3G connectivity, while 128F/512D DRAM ensures high throughput for concurrent VPN tunnels. Outcome: Fast, AES-encrypted remote access to critical systems, zero trust edge firewall protection, and resilient cellular link performance for reliable field coordination.
Scenario: An oil and gas operator needs secure telemetry from remote wellheads over cellular networks. The C2811-3G-G-SEC/K9 paired with HWIC-3G-GSM and ample DRAM aggregates multi-sensor data locally, applies Advanced Security features (VPN, ACLs, IPS), and tunnels it back to the data center. Outcome: Low-latency, encrypted sensor feeds, simplified field device management, and proactive intrusion prevention safeguarding critical infrastructure.
To get the detailed certification, please go to the Compliance Center.
 C2811-3G-G-SEC/K9 |  CISCO2811-SRST/K9 |  CISCO2821-AC-IP |  CISCO2821-SEC/K9 |  C2811-VSEC/K9 | |
|---|---|---|---|---|---|
| 5G Support | No | No | No | No | No |
| Architecture | Modular | Modular | Fixed | Fixed | Modular |
| Broadband | N/A | N/A | N/A | N/A | N/A |
| Built-in Security Features | Firewall / Intrusion Prevention | Firewall / Intrusion Prevention / Malware Protection | Firewall / Intrusion Prevention | Firewall, Intrusion Prevention, VPN | Firewall, Intrusion Prevention |
| Compliance Standards | FCC / CE | FCC / CE | FCC / CE | RoHS, FCC, CE | FCC, CE |
| Connectivity Type | Wired | Wired | Wired | Wired | Wired |
| Depth | 16.10 inches | 14.96 inches | 16.1 inches | 14.0 inches | N/A |
| Device Type | Router | Router | Router | Router | Router |
| EMC | N/A | N/A | N/A | N/A | N/A |
| Ethernet Technology | 10/100 | 10/100 | 10/100 | 10/100 | 10/100 |
| Expansion Slots | EHWIC / NIM | NIM | EHWIC | EHWIC | EHWIC / NIM |
| Features | VPN / VoIP / IPv6 Compatible / Firewall | VPN / IPv6 Compatible / Firewall | VPN / NAT / Firewall / IPv6 Compatible | VPN, Firewall, Intrusion Prevention, IPv6 Compatible | VPN, IPv6 Compatible, Firewall, MPLS |
| Firewall Features | Yes | Yes | Yes | Yes | Yes |
| Flash Memory | 256 MB | 128 MB | 128 MB | 256 MB | 256 MB |
| Form Factor | Chassis | Rack-mount | Rack-mount | Rack-mount, Desktop | Rack-mount |
| Height | 1.73 inches | 1.72 inches | 1.73 inches | 3.0 inches | N/A |
| High Availability Support | Supported | Supported | Not Supported | Supported | Supported |
| Integrated Services | Voice | Voice / Video / WAN Optimization | Voice / Video / WAN Optimization | Voice, Video, WAN Optimization | Voice, Video, WAN Optimization |
| Interface Ports | RJ-45 | RJ-45 | RJ-45 | RJ-45 | RJ-45, Serial, Modular Slots |
| LAN Ports | Modular LAN | 2 LAN Ports | 2 LAN Ports | N/A | Modular LAN |
| Management | Managed | Managed | Managed | Managed | Managed |
| Memory | 128 MB | 256 MB | 256 MB | 256 MB | 128 MB |
| Modular Slots Available | 2 Slots | 2 Slots | 2 Slots | 2 Slots | 3+ Slots |
| Network Protocols | IP / IPX / Frame Relay / PPP / HDLC | IPv4 / IPv6 | IPv4 / IPv6 | IPv4, IPv6 | IP, IPX, AppleTalk |
| Power | 65W | 80W | 150W | 65 W | 130 Watts |
| Power Source | AC Power Supply | AC Power Supply / Redundant | AC Power Supply | AC Power Supply / Redundant | AC Power Supply |
| Product Name | Cisco 2811 Integrated Services Router with 3G and Security | CISCO2811-SRST/K9 | Cisco 2821 AC-IP Integrated Services Router | Cisco 2821 Integrated Services Router Security (CISCO2821-SEC/K9) | Cisco 2811 Integrated Services Router (C2811-VSEC/K9) |
| Product Type | Enterprise Router | Enterprise Router | Enterprise Router | Enterprise Router | Enterprise Router |
| QoS Features | Supported | Supported | Supported | Supported | Supported |
| Remote Management | CLI / SNMP / Telnet / SSH | SSH / Telnet / SNMP | SSH / Telnet / SNMP | SSH, Telnet, SNMP | Telnet, SSH, SNMP |
| Routing Protocols | OSPF / BGP / EIGRP / RIP / Static Routing | OSPF / BGP / EIGRP / RIP / Static Routing | OSPF / EIGRP / RIP / Static Routing | OSPF / BGP / EIGRP / RIP / Static Routing | OSPF / BGP / EIGRP / RIP / Static Routing |
| Safety | N/A | N/A | N/A | N/A | N/A |
| Speed/Capacity | N/A | N/A | 10/100 | N/A | N/A |
| Stacking Capability | No | No | No | No | No |
| Telecom | N/A | N/A | N/A | N/A | N/A |
| Throughput Capacity | 0.03 Gbps | 0.025 Gbps | 0.075 Gbps | 0.075 Gbps | 25 Mbps |
| Use Case | Enterprise | Enterprise / Small Business | Business / Enterprise | Enterprise, Business | Enterprise |
| VPN Support | IPSec | IPSec | IPSec / SSL VPN | IPSec / SSL VPN / N/A | IPSec |
| WAN Configuration | WAN | Dual WAN | Dual WAN | Dual WAN | Dual WAN |
| WAN Ports | 2 WAN | 2 WAN | 2 WAN | 2 WAN | 2 WAN |
| Weight | 23 lbs | 21.52 lbs | 13 lbs | 12 lbs | N/A |
| Wi-Fi Standard | N/A | N/A | N/A | N/A | N/A |
| Width | 17.20 inches | 17.24 inches | 17.3 inches | 17.0 inches | N/A |
| Wireless Support | No | No | No | No | No |
Cisco 2811 with HWIC-3G-GSM delivers secure connectivity and reliable UC. Ideal for remote branches needing mobile backup and advanced security.
Durable and predictable. Handles 3G connections efficiently while maintaining stable voice and network performance.
Easy to deploy and manage. Provides secure mobile WAN connectivity and reliable UC for branch offices.
High-performing and robust. Maintains predictable voice and secure communications across multiple endpoints.
Reliable Cisco solution. Ensures stable 3G backup and advanced security for branch networks.
The Cisco 2811 C2811-3G-G-SEC/K9 integrates 3G-GSM WAN, advanced security (stateful firewall, IPS, VPN), two WAN interfaces, three LAN ports, modular HWIC support, 128 MB Flash, and 512 MB DRAM for secure branch connectivity.
This SKU includes the Cisco 2811 router chassis, HWIC-3G-GSM module, power supply, mounting brackets, console cable, 128 MB Flash card, and 512 MB DRAM.
The router ships with 512 MB of DRAM for processing and 128 MB of Flash memory for Cisco IOS image and configuration storage.
The Advanced Security license provides stateful firewall, intrusion prevention (IPS), IPsec VPN termination, secure application inspection, and content filtering for comprehensive branch protection.