Description
The Cisco C1121-4P is a feature-rich, high-performance router designed for enterprise-level applications. As part of the Cisco ISR 1100 series, this router delivers robust network management capabilities, exceptional security features, and advanced routing functionalities. Ideal for businesses that require reliable and secure connectivity, the C1121-4P ensures seamless data transfer and efficient network operations. Leveraging the consistent performance and trusted reliability that the Cisco brand is known for, the ISR 1100 series routers such as this model are specifically engineered to meet the demanding requirements of today’s digital environments.
Product Highlights
4
Ethernet Ports
1 Gbps
Max Throughput
12
VLAN Support
Product Applications Scenarios
Enterprise Network
Enables secure and efficient connectivity for critical business applications, ensuring reliable data transfer.
Security & Privacy
Offers advanced security features to protect sensitive data and ensure network integrity.
Cloud Services
Supports seamless cloud connectivity and enhances the performance of cloud-based applications.
Product Features Comparison
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| Model | C1121-4P | C1111-4P | C1109-2PLTE |
| Brand | Cisco | Cisco | Cisco |
| Max Throughput | 1 Gbps | 500 Mbps | 300 Mbps |
| Ethernet Ports | 4 | 4 | 2 |
| VLAN Support | 12 | 10 | 8 |
| Security Features | Advanced | Basic | Basic |
Optional Add-ons
| Model Number | Description |
| ISR-PSU-75W | 75W Power Supply for Cisco ISR 1100 Series |
| ISR-FAN-MODULE | Cooling Fan Module for Cisco ISR 1100 Series |
| ISR-RACK-MOUNT | Rack Mount Kit for Cisco ISR 1100 Series |
C1121-4P Specification
Model
C1121-4P
Brand
Cisco
Product Description
ISR 1100 4P Dual GE SFP Router
Memory (default and maximum)
DRAM: 4 GB
Flash: 4 GB
Models with 8GB DRAM and Flash: C1111X-8P, C1121X-8P, C1126X, C1127X, C1161X
Flash: 4 GB
Models with 8GB DRAM and Flash: C1111X-8P, C1121X-8P, C1126X, C1127X, C1161X
Console
Micro USB console (Type A)
RJ45
RJ45
Micro-USB port (reserved)
Micro-USB port to support remote LTE diagnostics and monitoring tools (Qualcomm CAIT and Spirent UDM) (USB 3.0)
WLAN interfaces
Multiuser Multiple-Input Multiple-Output (MU-MIMO) allows transmission of data to multiple 802.11ac Wave 2 clients simultaneously
802.11ac Wave 2 with 2×2:2 MIMO technology offers 867 Mbps rates
Flexible deployment through the Mobility Express solution
For more information, view the Cisco Aironet 1815i Access Point Data Sheet
802.11ac Wave 2 with 2×2:2 MIMO technology offers 867 Mbps rates
Flexible deployment through the Mobility Express solution
For more information, view the Cisco Aironet 1815i Access Point Data Sheet
Maximum clients
Maximum number of associated wireless clients: 200 per Wi-Fi radio; in total 400 clients per access point. C1109-4PLTEP and C1109-4PLTEW models come with default dual W-ANTM2050D-RPSMA external antenna and all modem have default 8.8 AP autonomous or Mobility Express release.
Authentication and security
AES for Wi-Fi Protected Access 2 (WPA2)
802.1X, RADIUS AAA
802.11r and 802.11i
802.1X, RADIUS AAA
802.11r and 802.11i
802.11ac
2×2 SU-MIMO/MU-MIMO with two spatial streams
Maximal Ratio Combining (MRC)
20-, 40-, and 80-MHz channels
PHY data rates up to 866.7 Mbps (80 MHz on 5 GHz)
Packet aggregation: A-MPDU (Tx/Rx), A-MSDU (Rx)
802.11 Dynamic Frequency Selection (DFS)
Cyclic Shift Diversity (CSD) support
Maximal Ratio Combining (MRC)
20-, 40-, and 80-MHz channels
PHY data rates up to 866.7 Mbps (80 MHz on 5 GHz)
Packet aggregation: A-MPDU (Tx/Rx), A-MSDU (Rx)
802.11 Dynamic Frequency Selection (DFS)
Cyclic Shift Diversity (CSD) support
Software
Cisco IOS XE 16.6.1 Software image or later
Specific models have different IOS XE support versions
Specific models have different IOS XE support versions
Serial WAN interface and protocol
Support for both synchronous and bisync modes
Synchronous maximum speed of up to 8 Mbps
Support for network clock synchronization
EIA-232, EIA-449, EIA-530, EIA-530A, V.35, and X.21
Synchronous maximum speed of up to 8 Mbps
Support for network clock synchronization
EIA-232, EIA-449, EIA-530, EIA-530A, V.35, and X.21
Inline PoE
Optional internal adapter for inline PoE on 4 switch ports; 802.3af-compliant PoE or 802.3at-compliant PoE+
External power supply
AC input voltage: Universal 100 to 240 VAC
Frequency: 50 to 60 Hz
Maximum output power: 66W or 115W depending on model
Output voltages: 12 VDC, 48 VDC (optional PoE and PoE+)
Frequency: 50 to 60 Hz
Maximum output power: 66W or 115W depending on model
Output voltages: 12 VDC, 48 VDC (optional PoE and PoE+)
USB 3.0
USB eTokens and USB flash memory
View the USB Device Support Data Sheet for details
View the USB Device Support Data Sheet for details
LEDs
WWAN (green/amber)
SIM status (green/amber)
RSSI bar (green)
3G/LTE service (green/amber)
GPS (green/amber)
Speed and link for Gigabit Ethernet WAN port (green)
Speed and link for all Fast Ethernet LAN ports (green)
SIM status (green/amber)
RSSI bar (green)
3G/LTE service (green/amber)
GPS (green/amber)
Speed and link for Gigabit Ethernet WAN port (green)
Speed and link for all Fast Ethernet LAN ports (green)
Physical dimensions (H x W x D)
C111X Models: 1.75 x 12.7 x 9.6 in (LTE models), 1.75 x 12.7 x 9.03 in (non-LTE models)
C1120 Models: 1.65 x 12.7 x 8.9 in
C1160 Models: 1.65 x 10.8 x 7.85 in
C1101-4PLTEP and C1101-4PLTEPWX Models: 1.73 x 9.75 x 6.6 in
C1101-4P Models: 1.1 x 7.5 x 6.0 in
C1109-2PLTE Models: 1.27 x 8.4 x 6.0 in
C1109-4PLTE2P and C1109-4PLTE2PWX Models: 1.71 x 11.16 x 9.8 in
Pluggable: 0.85 x 2.5 x 3.88 in
C1120 Models: 1.65 x 12.7 x 8.9 in
C1160 Models: 1.65 x 10.8 x 7.85 in
C1101-4PLTEP and C1101-4PLTEPWX Models: 1.73 x 9.75 x 6.6 in
C1101-4P Models: 1.1 x 7.5 x 6.0 in
C1109-2PLTE Models: 1.27 x 8.4 x 6.0 in
C1109-4PLTE2P and C1109-4PLTE2PWX Models: 1.71 x 11.16 x 9.8 in
Pluggable: 0.85 x 2.5 x 3.88 in
Standard safety certifications
UL 60950-1, EN 60950-1
CAN/CSA C22.2 No. 60950-1
CB to IEC 60950-1, 2nd edition with all group differences and national deviations
CAN/CSA C22.2 No. 60950-1
CB to IEC 60950-1, 2nd edition with all group differences and national deviations
EMC emissions
EN55022/CISPR22, CFR 47 Part 15, ICES003, VCCI-V-3, AS/NZS CISPR22, CNS13438, EN300-386, EN61000-3-2, EN61000-3-3, EN61000-6-1
EMC immunity
EN55024/CISPR24, EN61000-4-2, EN61000-4-3, EN61000-4-4, EN61000-4-5, EN61000-4-6, EN61000-4-11, EN300-386
Radio immunity
EN301 489-1, EN 301 489-7, EN301 489-24
Cellular radio
EN 301 908-1, EN 301 908-2, EN 301 511, 47 CFR Part 22, 47 CFR Part 24, EN 301 908-13
Environmental operating range
Nonoperating temperature: -4°F to 149°F (-20°C to 65°C)
Nonoperating humidity: 5% to 95% (noncondensing)
Nonoperating altitude: 0 to 15,000 ft (0 to 4570 m)
Operating temperature: 32°F to 104°F (0°C to 40°C)
Operating humidity: 10% to 85% (noncondensing)
Operating altitude: 0 to 10,000 ft (0 to 3000 m at 30°C)
Nonoperating humidity: 5% to 95% (noncondensing)
Nonoperating altitude: 0 to 15,000 ft (0 to 4570 m)
Operating temperature: 32°F to 104°F (0°C to 40°C)
Operating humidity: 10% to 85% (noncondensing)
Operating altitude: 0 to 10,000 ft (0 to 3000 m at 30°C)








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