Product Type | Integrated Services Router (ISR) |
Series | Cisco ISR 1100 Series |
Model | C1121X-8P |
Form Factor | Desktop or Wall-mountable |
Mounting Type | Rack-mountable (with optional kit) |
Power Supply | External AC Adapter |
Power Consumption (Typical) | 35W |
Memory (RAM) | 8 GB DDR3 |
Flash Memory | 8 GB eMMC |
Software Included | Cisco IOS XE |
Maximum Throughput | 500 Mbps |
Support for SD-WAN | Yes |
Cisco ISR 1100 8P Dual GE SFP WAN 8GB Router (C1121X-8P)



Key Benefits

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- Designed for resilient enterprise connectivity with dual GE SFP WAN ports
- TAA compliance enables use in government and federally regulated networks
- Part of Cisco's ISR family ensures compatibility and investment protection across Cisco infrastructures
Product Overview
The Cisco ISR 1100 8P Dual GE SFP WAN 8GB Router (C1121X-8P) is engineered to provide robust and agile network access in demanding enterprise branch environments. With support for dual Gigabit Ethernet SFP WAN interfaces, it allows for flexible high-speed WAN connectivity and failover configurations to ensure business continuity. The device delivers solid routing performance optimized for branch office workloads and includes 8GB capacity to accommodate routing processes and feature sets.
This product complies with the Trade Agreements Act (TAA), making it eligible for purchase by government agencies and other federally governed IT infrastructures. Its manufacture across multiple certified locations (Brazil, China, and the United States) ensures a secure and globally accessible supply chain. Designed to integrate seamlessly into Cisco-powered infrastructures, it’s ideal for businesses requiring compact, powerful, and secure routing without compromise.
The Cisco C1121X-8P is part of Cisco’s ISR 1100 series, which supports secure SD-WAN, giving IT teams the agility to deploy scalable solutions with simplified management. Its reliability and performance make it a worthwhile investment for organizations looking to modernize network operations with advanced connectivity options.
Specifications
Product Overview
Wireless Features
Wireless Support | No internal wireless module |
Compliance & Origin
Country of Origin | Brazil / China / United States |
TAA Compliance | Yes |
Certifications | UL, FCC Part 15 Class A, CE, ICES-003, RoHS |
Advanced Security Features
Integrated Firewall | Yes (Zone-Based Firewall) |
IPSec VPN Support | Yes |
MACsec Encryption | Supported |
Deep Packet Inspection (DPI) | Yes |
Threat Detection | Yes, via Umbrella integration and Cisco Threat Intelligence |
Content Filtering | Yes, with Cisco Umbrella Security integration |
Intrusion Prevention System (IPS) | Yes (Cisco Snort IPS through subscription) |
Interfaces
WAN Ports | 2 x GE SFP |
LAN Ports | 8 x 10/100/1000 Mbps RJ-45 |
Console Ports | 1 x RJ45 Console + 1 x USB Mini-B Console |
USB Ports | 1 x USB 3.0 Type A |
Management Port | 1 x 1GbE RJ-45 |
Interconnect Throughput | 500 Mbps |
SFP Slot Types Supported | Gigabit Ethernet SFP Modules |
Physical & Environmental
Dimensions (W x D x H) | 10.56 x 7.24 x 1.72 in (26.8 x 18.4 x 4.4 cm) |
Weight | 4.4 lbs (2 kg) |
Operating Temperature Range | 32°F to 104°F (0°C to 40°C) |
Storage Temperature Range | -40°F to 158°F (-40°C to 70°C) |
Operating Humidity | 10% to 85% Non-Condensing |
Storage Humidity | 5% to 95% Non-Condensing |
Altitude | Up to 10,000 ft (3,000 m) |
Cooling | Fanless, passive cooled |
Cloud Management & Licensing
Cloud-Managed Support | Yes, via Cisco vManage |
Subscription Licensing | Cisco DNA and Network Essentials/Advantage Licenses |
SD-WAN Functionality | Yes, with vManage license required |
Built-in Management Tool | Cisco IOS XE CLI and Web User Interface |