C1121-4P - Cisco Router ISR 1100
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C1121-4P
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C1121-4P Overview
ISR 1100 4P Dual GE SFP Router C1121-4P
Overview
C1121-4P Overview
Cisco C1121-4P, Ethernet WAN, Gigabit Ethernet, Silver
Cisco® 1000 Series Integrated Services Routers (ISRs) with Cisco IOS® XE Software combine Internet access, comprehensive security, and wireless services (LTE Advanced 3.0 wireless WAN and 802.11ac wireless LAN) in a single, high-performance device. The routers are easy to deploy and manage, with separate data and control plane capabilities.
Quick Specs
Product Code | C1121-4P |
Product Description | ISR 1100 4P Dual GE SFP Router |
Memory (default and maximum) | DRAM: 4 GB Flash: 4 GB |
Dimensions (H x W x D) | 1.65 x 12.7 x 8.9 in. (41.9 x 322 x 226 mm) |
Product Details
ISR 1100Series provides these features:
•Lightweight, compact size with low power consumption
•High performance to run concurrent services
•High availability and business continuity
•Consistent, high application performance levels
•Risk mitigation with multilevel security
•Unified control of wired and wireless networks from a common console for streamlined operations
•Remote configuration and management to keep local IT staff lean
•Performance
-Throughput
-Service reliability
•Lower WAN expenditures
•Pay as you grow: IPsec performance upgrade model
•IT consolidation, space savings, and improved Total Cost of Ownership (TCO)
•Business continuity and increased resiliency
Architectural highlights：
•Multicore processors
•Embedded IPsec VPN hardware acceleration
•Integrated Gigabit Ethernet ports
•USB-based console access
•Optional PoE upgrade
•Flash memory support
•DRAM
.
Business need | Features/description |
Lightweight, compact size with low power consumption | •Can be deployed in many different environments where space, heat dissipation, and low power consumption are critical factors (Including Cisco Pluggable smaller form factor technology). |
High performance to run concurrent services | •High performance allows customers to take advantage of broadband network speeds while running secure, concurrent data, voice, video, and wireless services. C1160 models will have better overall performance. |
High availability and business continuity | •Redundant WAN connections for failover protection and load balancing. •Dynamic failover protocols such as Virtual Router Redundancy Protocol (VRRP; RFC 2338), Hot Standby Router Protocol (HSRP), and Multigroup HSRP (MHSRP). |
Consistent, high application performance levels | •The router can run multiple services simultaneously with minimal performance degradation. |
Risk mitigation with multilevel security | •Network perimeter security with integrated application inspection firewall. •Data privacy through high-speed IP Security (IPsec) Triple Data Encryption Standard (3DES), and Advanced Encryption Standard (AES) encryption. •High-performance VPNs: DMVPN, FlexVPN, GETVPN. •Encrypted Traffic Analytics (ETA) to identify malware communications in encrypted traffic using passive monitoring, extraction of relevant data elements, and supervised machine learning with cloud-based global visibility. •Cisco Umbrella™ is a cloud security platform that provides the first line of defense against threats on the internet wherever users go. •Security hardware acceleration. •Trustworthy systems with Field-Programmable Gate Array (FPGA) and hardware anchor. |
Unified control of wired and wireless networks from a common console for streamlined operations | •Simplifies and centralizes configuration and management of wireless and wireline devices. Supports WLAN services without requiring a wireless LAN controller. •Supports Mobility Express for WLAN-enabled routers. |
Remote configuration and management to keep local IT staff lean | •Supports separate console and USB ports. Can be configured to work with optional USB token. •Supports TR-069. |
Performance •Throughput •Service reliability | •ISR 1100 can provide encrypted traffic performance greater than 350 Mbps. •A distributed multicore architecture with the dedicated control plane and service plane. •Remote installation of application-aware services that run identically to their counterparts in dedicated appliances (Future roadmap). |
Lower WAN expenditures | •Cisco Software-Defined WAN (SD-WAN) support for optimized WAN connection. •Smaller form factor and Cisco Pluggable technology provide additional protection investment and flexibility. |
Pay as you grow: IPsec performance upgrade model | •Router IPsec capacity can be increased with a remote performance-on-demand license upgrade (no hardware upgrade) for exceptional savings and CapEx budget management. |
IT consolidation, space savings, and improved Total Cost of Ownership (TCO) | •Single converged branch platform integrates routing, switching, security, and performance management capabilities. |
Business continuity and increased resiliency | •The entire 1000 Series supports Power over Ethernet (PoE) and PoE+ power to endpoints (Not available on C1101 and C1109 smaller form factor series). |
Licenses | Description |
SL-1100-4P-APP | AppX License for Cisco ISR 1100 4P Series |
C1-SL-1100-4P-APP | AppX Foundation License for Cisco ISR 1100 4P Series |
SL-1100-4P-SEC | Security License for Cisco ISR 1100 4P Series |
Security License for Cisco ISR 1100 4P Series | |
NPE Security License for Cisco ISR 1100 4P Series |
Small Form-Factor Pluggable Supported
Small Form-Factor Pluggable | ISR 1100 8P | ISR 1100 4P | Description |
Yes | Yes | 1000BASE-EX SFP transceiver module, SMF, 1310nm, DOM. | |
Yes | Yes | GE SFP, LC connector LX/LH transceiver; with DOM. | |
Yes | Yes | GE SFP, LC connector SX transceiver; with DOM. | |
Yes | Yes | 1000BASE-ZX SFP; with DOM. | |
Yes | Yes | 100BASE-ZX SFP (80km). | |
Yes | Yes | 1000BASE-BX SFP, 1490NM. | |
Yes | Yes | 1000BASE-BX SFP, 1310NM. |
Compare to Similar Items
Model | Product Description |
C1121-4P | ISR 1100 4P Dual GE SFP Router |
C1121-4PLTEP | ISR 1100 4P Dual GE SFP Router Pluggable SMS/GPS |
C1121-8PLTEP | ISR 1100 8P Dual GE SFP Router Pluggable SMS/GPS |
SFP, PoE, Micro USB, LAN: 4x 10/100/1000 Mbps, WAN: 1x 10/100/1000 Mbps, 12V, 2A
- Ethernet WAN
- Gigabit Ethernet
- Web-based management
- 802.1x RADIUS, IPSec, WPA2-AES, WPA2-RADIUS
Summary Description
Cisco C1121-4P, Ethernet WAN, Gigabit Ethernet, Silver
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Specification
C1121-4P Specification
C1121-4P Specification | |
Product Code | C1121-4P |
Product Description | ISR 1100 4P Dual GE SFP Router |
Memory (default and maximum) | •DRAM: 4 GB Only C1111X-8P,C1121X-8P,C1126X,C1127X, C1161X models have 8GB DRAM •Flash: 4 GB Only C1111X-8P,C1121X-8P,C1126X,C1127X, C1161X models have 8GB Flash |
Console | •Micro USB console (Type A). •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–capable clients simultaneously to improve the client experience. Prior to MU-MIMO, 802.11n and •802.11ac Wave 1 access points could transmit data to only one client at a time, typically referred to as Single-User MIMO (SU-MIMO). •802.11ac Wave 2 with 2x2:2 MIMO technology uses two spatial streams when operating in SU-MIMO or MU-MIMO mode, offering 867-Mbps rates for more capacity and reliability than competing access points. •Flexible deployment through the Mobility Express solution is ideal for small to medium-sized deployments. Easy setup allows the 1000 Series (similar to 1815i) to be deployed on networks without a physical controller. •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. Option to select 8.8 CAPWAP WLC image. |
Authentication and security | •AES for Wi-Fi Protected Access 2 (WPA2). •802.1X, RADIUS AAA. •802.11r and 802.11i. |
802.11ac | •2x2 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. |
Software | •Cisco IOS Software feature set: Universal Cisco IOS XE 16.6.1 Software image or later. C1112, C1113, and C1101 models support starting with IOS XE 16.8.1 Software image or later. C1118, C1111X-8P and C1109 models support with IOS XE 16.9.1 Software image or later. •Cisco IOS Software feature set: C1120 and C1160 models Universal Cisco IOS XE 16.11.1 Software image or later. •Cisco Unified Wireless Network Software with AireOS Wireless Controllers Release 8.5 (migration to 8.8 starting March, 2019 and 8.8 for 1101 and 1109 Models) MR1 or later. |
Serial WAN interface and protocol
| •Support for both synchronous and bisync modes. •Synchronous maximum speed of up to 8 Mbps. •Support for bisync modes. •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 for IP phones or external wireless access points; 802.3af-compliant PoE or 802.3at-compliant PoE+. |
External power supply | Product power specifications: C111X, C1120 and C1160 Models •AC input voltage: Universal 100 to 240 VAC. •Frequency: 50 to 60 Hz. •Maximum output power: 66W (default). •Output voltages: 12 VDC. •Optional PoE and PoE+: -Single 150W power supply required for Cisco 1100-8P series router -Single 115W power supply required for Cisco 1100-4P series router •External output voltage: 48 VDC. C1101-4PLTEPWX and C1109-4PLTE2PWX Models: •AC input voltage: Universal 100 to 240 VAC. •Frequency: 50 to 60 Hz. •Maximum output power: 66W (default iTemp for C1109-4PLTE2PWX Models). •Output voltages: 12 VDC. C1101-4P, C1101-4PLTEP,C1109-2PLTE, and C1109-4PLTE2P Models: •AC input voltage: Universal 100 to 240 VAC. •Frequency: 50 to 60 Hz. •Maximum output power: 30W (default iTemp for Models). •Output voltages: 12 VDC. |
USB 3.0 | •USB devices supported: -USB eTokens and USB flash memory •Devices USB 3.0 supports to be connected externally. View the USB Device Support Data Sheet . |
EDs | •WWAN (green/amber). •SIM status (green/amber). •Received signal strength indication (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. (44 x 323 x 244 mm) (includes rubber feet on LTE models). •1.75 x 12.7 x 9.03 in. (42 x 323 x 230mm) (includes rubber feet on non-LTE models). C1120 Models •1.65 x 12.7 x 8.9 in. (41.9 x 322 x 226 mm). C1160 Models •1.65 x 10.8 x 7.85 in. (41.9 x 274 x 199 mm). C1101-4PLTEP and C1101-4PLTEPWX Models •1.73 x 9.75 x 6.6 in. (43.9 x 247.6 x 167.6 mm) (includes rubber feet models). C1101-4P Models •1.1 x 7.5 x 6.0 in. (27.9 x 190.5 x 152.4 mm) (includes rubber feet models). C1109-2PLTE Models •1.27 x 8.4 x 6.0 in. (32.3 x 213.4 x 152.4mm) (includes rubber feet models). C1109-4PLTE2P and C1109-4PLTE2PWX Models (ship default with dual W-ANTM2050DRPSMA Wi-Fi antennae) •1.71 x 11.16 x 9.8 in. (43.4 x 283.5 x 248.9 mm) (includes rubber feet models). Pluggable •0.85 x 2.5 x 3.88 in. (21.6 x 63.5 x 98.5 mm). |
Standard safety certifications | •UL 60950-1.and EN 60950-1. •CAN/CSA C22.2 No. 60950-1. •CB to IEC 60950-1, 2 nd 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, and 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), and EN300-386. |
Radio immunity | •EN301 489-1, EN 301 489-7, and EN301 489-24. |
Cellular radio | •EN 301 908-1, EN 301 908-2, EN 301 511, 47 CFR Part 22, 47 CFR Part 24, and EN 301 908-13. |
Environmental operating range | •Nonoperating temperature: -4° to 149°F (-20° to 65°C). •Nonoperating humidity: 5% to 95% relative humidity (noncondensing). •Nonoperating altitude: 0 to 15,000 ft (0 to 4570 m). •Operating temperature: 32° to 104°F (0° to 40°C). C1101 support 32° to 113°F (0° to 45°C). C1109-2PLTE support 32° to 122°F (0° to 50°C). C1109-4PLTE2P and C1109-4PLTE2PW models support -4° to 131°F (-20° to 55°C). •Operating humidity: 10% to 85% relative humidity (noncondensing). •Operating altitude: 0 to 10,000 ft (0 to 3000 m at 30°C). Operating altitude: 0 to 10,000 ft (0 to 3000 m at •35°C for C1109-2PLTE models). Operating altitude: 0 to 10,000 ft (0 to 3000 m at 40°C for C1109-4PLTE2P and C1109-4PLTE2PW models). |
Resources
Documents
Frequently Asked Questions
What are the primary connectivity interfaces on the Cisco C1121-4P router? +
The Cisco C1121-4P is a high-performance Integrated Services Router featuring four Gigabit Ethernet ports for flexible LAN and WAN connectivity. It also includes dual Small Form-Factor Pluggable (SFP) ports, which allow for high-speed fiber-optic uplinks, making it an excellent choice for businesses requiring robust, scalable network connectivity in branch office or enterprise edge environments.
Is the Cisco C1121-4P suitable for small to medium branch office deployments? +
Yes, this model is specifically engineered for branch offices and distributed enterprise sites. It balances compact design with the processing power necessary for secure WAN connectivity and essential edge services. Its multi-port configuration ensures that branch locations can handle local data traffic while maintaining reliable, encrypted communication back to the main data center or cloud environments.
Does the C1121-4P support high-speed fiber connectivity for WAN uplinks? +
Absolutely. The dual SFP ports are designed to provide versatile fiber connectivity options. By using compatible SFP transceivers, network administrators can connect directly to fiber-based service provider circuits, ensuring superior bandwidth, lower latency, and better signal integrity compared to traditional copper-based WAN connections in modern enterprise network architectures.
What is the typical use case for the ISR 1100 series in an enterprise network? +
The ISR 1100 series, including the C1121-4P, is primarily used as a secure SD-WAN edge router. It excels in environments where secure connectivity, firewall capabilities, and application-aware traffic routing are required at the branch level. It provides the necessary performance to run multiple concurrent network services without compromising data throughput or security posture.
How does the C1121-4P manage network traffic efficiency? +
This router utilizes Cisco’s advanced integrated services architecture to handle traffic efficiently through robust routing protocols and traffic prioritization. It is designed to sustain high-speed data flow while managing security functions, ensuring that mission-critical business applications receive priority bandwidth and consistent performance even during periods of high network congestion.
Are the Gigabit Ethernet ports on the C1121-4P configurable for different network segments? +
The four integrated Gigabit Ethernet ports are fully configurable, allowing you to segment your network according to your specific security and performance policies. You can assign these ports to different VLANs, isolate guest traffic from internal corporate resources, or set up distinct zones for various business departments to optimize local network administration.
What level of security can be implemented on the C1121-4P router? +
The platform supports a comprehensive suite of security features, including advanced encryption, secure VPN tunneling, and threat protection. These capabilities ensure that all traffic entering or leaving the branch office is inspected and authenticated. By integrating these services directly into the hardware, the router protects against unauthorized access while maintaining encrypted communication tunnels for remote office connectivity.
Can the Cisco C1121-4P be integrated into existing enterprise SD-WAN solutions? +
Yes, the C1121-4P is a cornerstone component for Cisco SD-WAN deployments. It supports the necessary software-defined networking features required to automate branch deployment and manage traffic across multiple transport paths. This allows organizations to leverage software-based orchestration to improve visibility and control over their entire wide area network infrastructure.
How can I obtain a bulk quote for Cisco C1121-4P routers through BuyRouterSwitch.com? +
For large-scale deployments, our procurement team provides competitive bulk pricing tailored to your specific project needs. Simply visit the product page and select the 'Request a Quote' button or contact our sales department directly. We specialize in volume orders and will provide a formal, customized quotation that meets your procurement requirements and budgetary guidelines.
Why should I choose BuyRouterSwitch.com for my Cisco hardware procurement? +
BuyRouterSwitch.com is a trusted source for genuine Cisco networking equipment. We focus on providing a seamless purchasing experience for enterprise buyers who require reliable, authentic hardware. Our deep inventory, specialized sales support, and commitment to efficient procurement processes make us the ideal partner for organizations looking to source high-quality enterprise networking solutions with confidence and precision.
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