C1921-3G-U-SEC/K9 Cisco 1921 Multi Service Router

Highlights of Cisco C1921-3G-U-SEC/K9 Multi Services Router

The Cisco C1921-3G-U-SEC/K9 Integrated Services Router is a versatile and secure networking solution designed for branch offices and mobile connectivity environments. With built-in 3.5G wireless support, advanced security licensing, and modular expansion capabilities, this router ensures reliable performance and seamless communication.

General Information

• Manufacturer: Cisco
• Part Number: C1921-3G-U-SEC/K9
• Product Type: Integrated Services Router
• Sub Type: 2 Ports Services Router

Technical Specifications

Core Hardware & Memory

• 512 MB DRAM for efficient data processing
• 256 MB internal flash memory for system storage
• Optimized for stable enterprise-level performance

Network Interfaces & Connectivity

• 2 x 10/100/1000 Gigabit Ethernet ports
• Supports high-speed wired networking
• Ideal for branch office deployments

Expansion & Modularity

• 2 x Enhanced High-Speed WAN Interface Card (EHWIC) slots
• Flexible expansion for additional WAN or service modules
• Supports future network upgrades

Wireless & Cellular Support

• Integrated 3.5G EHWIC module for mobile broadband
• Supports HSPA+, HSPA, UMTS, EDGE, and GPRS technologies
• Operates across 850/900/1900/2100 MHz frequency bands
• Ideal for backup WAN or remote connectivity

Security Features

• Includes Security (SEC/K9) license bundle
• Hardware-accelerated encryption for IPSec and SSL VPN
• Advanced protection for secure data transmission

Form Factor & Physical Design

• Compact 1U rack-mountable chassis
• Also suitable for desktop placement
• Dimensions: 1.75 x 13.5 x 11.5 inches
• Weight: Approximately 11.9 lbs (5.41 kg)

Key Features & Components

Integrated 3.5G Connectivity

• Built-in mobile broadband support for WAN backup
• Ensures uninterrupted connectivity in remote locations

Advanced Security Bundle

• Pre-installed security license for enhanced protection
• Supports VPN technologies and encrypted communication

Flexible Network Expansion

• Dual EHWIC slots allow easy customization
• Supports additional WAN interfaces and services

Reliable Enterprise Performance

• Handles business-critical applications efficiently
• Optimized for both wired and wireless networking

Overview of Cisco C1921-3G-U-SEC/K9 2 Ports Services Router

The Cisco C1921-3G-U-SEC/K9 1921 Multi Services Router is a powerful and highly adaptable networking solution designed to deliver secure data connectivity flexible WAN access and reliable routing performance for branch offices enterprise edge deployments and distributed business environments where consistent uptime and strong security are critical to operational success and long term scalability across evolving network infrastructures.

Dual Gigabit Ethernet Ports for High Speed Wired Connectivity

The Cisco C1921-3G-U-SEC/K9 is equipped with two high performance Gigabit Ethernet ports that provide fast and stable wired connectivity ensuring efficient data transfer between connected devices while supporting business critical applications cloud based services and internal communication systems with consistent throughput and minimal latency across demanding enterprise environments where reliability and speed are essential for productivity.

Enhanced Throughput Capabilities for Bandwidth Intensive Applications and Modern Workloads

The dual Gigabit interfaces enable seamless handling of high bandwidth applications including video conferencing large data transfers and cloud collaboration tools ensuring that users experience uninterrupted performance and smooth communication across all connected systems even during peak network usage conditions in dynamic operational environments.

Optimized Data Flow Management for Reduced Latency and Stable Network Performance

The router ensures optimized data flow through intelligent packet processing and efficient routing decisions which significantly reduces latency and maintains stable performance allowing organizations to rely on consistent network behavior for critical business operations and real time communication services.

Integrated 3G Connectivity for Reliable Backup WAN Access

The Cisco C1921-3G-U-SEC/K9 includes integrated 3G connectivity which acts as a reliable backup WAN solution enabling organizations to maintain internet access during primary link failures ensuring uninterrupted business operations and continuous communication across all network dependent services in scenarios where uptime is crucial for maintaining service delivery and operational efficiency.

Automatic Failover Mechanism for Seamless Transition Between Primary and Backup Connections

The router supports automatic failover functionality which allows seamless switching from primary WAN connections to the integrated 3G network ensuring that network availability is preserved without manual intervention and minimizing downtime that could impact productivity and business continuity.

Flexible Deployment for Remote and Mobile Environments with Limited Infrastructure Availability

The inclusion of 3G connectivity enables deployment in remote locations or temporary setups where traditional broadband connectivity may not be readily available providing flexibility and ensuring that organizations can maintain reliable network access in diverse operational scenarios.

Advanced Security Bundle for Comprehensive Network Protection

The Cisco C1921-3G-U-SEC/K9 is equipped with a robust security bundle that includes integrated firewall capabilities VPN support intrusion prevention systems and advanced access control mechanisms ensuring that network traffic is protected from external threats while maintaining secure communication channels for sensitive business data across internal and external networks.

Stateful Firewall Protection for Real Time Threat Detection and Traffic Filtering

The integrated firewall continuously monitors network traffic using stateful inspection techniques identifying potential threats and blocking unauthorized access attempts ensuring that the network remains secure and resilient against cyber attacks while maintaining efficient data flow for legitimate communication.

Secure VPN Encryption for Confidential Data Transmission Across Distributed Networks

The router supports secure VPN connectivity allowing encrypted communication between branch offices remote users and central systems ensuring data confidentiality and integrity while enabling secure remote access and inter office connectivity across geographically dispersed environments.

Dedicated Management Port for Simplified Network Administration

The Cisco C1921-3G-U-SEC/K9 features a dedicated management port that allows administrators to access configure and manage the router independently from regular network traffic providing an additional layer of control and security while ensuring that management operations can be performed without impacting normal data flow within the network infrastructure.

Isolated Interface for Enhanced Security and Administrative Control

The dedicated management port ensures that administrative access is isolated from production traffic reducing the risk of unauthorized access and enabling secure configuration and monitoring of network settings without exposing critical control interfaces to potential threats.

Remote Management for Centralized Network Control and Rapid Issue Resolution

The router supports remote management capabilities allowing administrators to monitor and configure network operations from centralized locations ensuring efficient troubleshooting rapid issue resolution and minimal downtime across distributed enterprise environments.

Two Expansion Slots for Modular Flexibility and Customizable Network Configuration

The Cisco C1921-3G-U-SEC/K9 includes two expansion slots that provide flexibility for adding additional interfaces or service modules enabling organizations to customize their network configuration according to specific operational requirements and future scalability needs ensuring that the router can adapt to evolving business demands without requiring complete hardware replacement.

Interface Expansion Modules to Extend Connectivity Options

The expansion slots allow integration of additional network interfaces including WAN LAN and voice modules enabling organizations to enhance connectivity options and tailor the router to meet specific deployment scenarios and technical requirements.

Future Ready Design for Scalable Infrastructure Growth and Long Term Investment Value

The modular architecture ensures that organizations can scale their network infrastructure over time by adding new capabilities as needed providing long term investment protection and enabling seamless adaptation to technological advancements and changing business needs.

High Performance Routing Engine for Efficient Traffic Processing

The Cisco C1921-3G-U-SEC/K9 is powered by a high performance routing engine that delivers efficient traffic processing intelligent routing decisions and optimized network operations ensuring that data flows smoothly across the network while maintaining high levels of reliability and performance in demanding enterprise environments.

Intelligent Traffic Prioritization for Improved Application Performance and User Experience

The router implements intelligent traffic prioritization mechanisms that allocate bandwidth to critical applications ensuring optimal performance for essential services and enhancing overall user experience across all connected devices and systems.

Quality of Service Capabilities for Consistent Voice Video and Data Performance

The Quality of Service features allow administrators to prioritize latency sensitive applications such as voice and video ensuring consistent performance reduced jitter and improved communication quality across enterprise network deployments.

Rack Mountable Design for Structured Deployment

The Cisco C1921-3G-U-SEC/K9 features a rack mountable form factor that enables structured deployment within standard network racks ensuring organized infrastructure layout efficient space utilization and easy integration into existing data center or server room environments where proper cable management and accessibility are essential.

Professional Installation Capability for Clean and Organized Network Infrastructure

The rack mountable design allows for clean and professional installation ensuring that network equipment is properly aligned and securely positioned within racks improving accessibility and simplifying maintenance and upgrades.

Optimized Space Utilization for High Density Network Environments

The structured form factor supports efficient use of available space within network racks enabling organizations to deploy multiple devices in a compact arrangement without compromising performance or accessibility.

Centralized Network Management for Enhanced Visibility Control

The Cisco C1921-3G-U-SEC/K9 supports centralized management tools that enable administrators to configure monitor and control network operations from a unified interface improving visibility reducing complexity and ensuring consistent performance across all connected devices and services within the network infrastructure.

Advanced Tools for Real Time Network Analysis and Performance Optimization

The router includes comprehensive monitoring capabilities that provide real time insights into network performance allowing administrators to identify bottlenecks analyze traffic patterns and implement optimization strategies for improved efficiency and reliability.

Streamlined Administration for Reduced Operational Complexity and Improved Productivity

The centralized management features simplify administrative tasks enabling efficient configuration updates policy enforcement and system monitoring which contributes to improved productivity and reduced operational overhead in enterprise network environments.

Enhanced Business Continuity Through Redundant Connectivity Secure Infrastructure

The Cisco C1921-3G-U-SEC/K9 enhances business continuity by providing redundant connectivity options secure communication channels and reliable routing performance ensuring that organizations can maintain operations during network disruptions and continue delivering services without interruption across all business processes and applications.

Seamless Failover Capabilities for Continuous Network Availability and Operational Stability

The router supports seamless failover between primary WAN connections and backup 3G connectivity ensuring uninterrupted network availability and minimizing downtime during connectivity issues or infrastructure failures.

Dependable Support for Applications and Enterprise Communication Systems

The system ensures consistent support for mission critical applications enabling organizations to maintain productivity service quality and operational efficiency even under high demand conditions or unexpected network challenges ensuring reliable performance across all connected systems.

Improved Collaboration and Business Through Secure

The Cisco C1921-3G-U-SEC/K9 supports improved collaboration and business efficiency by providing secure high performance networking capabilities that enable seamless communication efficient data sharing and reliable access to business resources across distributed teams and organizational units.

Reliable Data Sharing Across Distributed Teams and Branch Office Environments

The router facilitates efficient data sharing across branch offices and remote teams ensuring that employees have access to necessary resources and information without delays or interruptions enhancing collaboration and productivity.