Product Type | Integrated Services Router |
Model | ISR 1100 4P Dual GE SFP |
Part Number | C1121-4P |
Form Factor | Desktop or Rack-mountable (with optional kit) |
Processor | ARM Cortex A9 |
System Memory (DRAM) | 4 GB |
Flash Memory | 4 GB |
Power Supply | External AC power supply (included) |
Power Consumption | Not to exceed 30W typical |
Weight | 1.05 kg (2.31 lb) |
Cisco ISR 1100 4P Dual GE SFP Router C1121-4P

Key Benefits

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- Perfect for government and enterprise use with full TAA compliance.
- Offers secure and scalable routing with AES, MPLS, and IPv4 support.
- Enhanced flexibility through multi-port SFP fiber connectivity and USB options.
Product Overview
The Cisco ISR 1100 4P Dual GE SFP Router C1121-4P provides enterprise-grade routing with support for MPLS, IPv4, and RADIUS. It integrates 4 GB DRAM and 4 GB flash to enhance performance and memory storage. Featuring 4-port Dual GE SFP connectivity and both USB 3.0 Type A and Micro-USB ports, it offers flexible network integration. With TAA compliance and AES support, it is suitable for secure government and commercial network deployments.
Specifications
Product Overview
Wireless Features
Wireless Support | No integrated wireless; optionally supported via external WAPs |
Compliance & Origin
Country of Origin | Brazil / China / United States |
TAA Compliance | Yes |
Certifications | FCC, UL/CSA, CE, RoHS, REACH, ICES, VCCI, BSMI, RCM, KCC |
Safety Compliance | UL 60950-1, IEC 60950-1 |
Environmental Compliance | RoHS-compliant, WEEE |
Advanced Security Features
Firewall Type | Integrated Stateful Firewall |
VPN Support | IPsec, DMVPN, FlexVPN |
Encryption | AES 128/256, 3DES |
Content Filtering | Yes, via Cisco Umbrella (optional) |
Intrusion Prevention | Supported with Security license |
Advanced Malware Protection | Supported with Cisco AMP (optional) |
Interfaces
Integrated LAN Ports | 4 x Gigabit Ethernet (RJ-45) |
WAN Ports | 2 x Combo GE WAN (RJ-45/SFP) |
Maximum WAN Ports | 2 |
USB Ports | 1 x USB 3.0 Type-A, 1 x Micro-USB console port |
Console Ports | 1 x RJ-45 serial console, 1 x micro-USB console |
Recommended WAN Interface | SFP or RJ-45 Combo GE |
Integrated SFP Ports | 2 |
Throughput | Up to 500 Mbps (with services enabled) |
Packet Forwarding Rate | Up to 190,000 pps |
Physical & Environmental
Chassis Dimensions (H x W x D) | 4.45 x 32.5 x 24.4 cm (1.75 x 12.8 x 9.6 in) |
Operating Temperature | 0°C to 40°C (32°F to 104°F) |
Storage Temperature | -20°C to 65°C (-4°F to 149°F) |
Operating Humidity | 5% to 85% non-condensing |
Storage Humidity | 5% to 95% non-condensing |
Noise Level | Fanless operation (silent) |
Cloud Management & Licensing
Management Interface | Cisco SD-WAN, Web GUI, and CLI |
Cloud Management Platform | Cisco vManage (SD-WAN enabled) |
License Options | Performance tiered licenses (e.g., IP Base, Security, DNA Essentials) |
Subscription Model | Yes, with Cisco DNA support |
Included License | IP Base by default (others optional) |