Description
Cisco 1921 Integrated Services Router
The Cisco 1921 Integrated Services Router (ISR) is a compact, high-performance edge device designed for small to mid-size branch offices that demand enterprise-grade security, flexible connectivity, and scalable services. Building on the proven Cisco 1841 ISR platform, the 1921 delivers a robust foundation for data, voice, and security services within a single, reliable platform. It features embedded hardware encryption acceleration to offload cryptographic tasks from the main processor, ensuring secure, high-speed VPNs and encrypted data paths without compromising performance. The 1921 also offers optional firewall, intrusion prevention system (IPS), and advanced security services that empower organizations to enforce strict network policies at the network edge, protecting against evolving threats while maintaining agility in a dynamic business environment.
- Secure, accelerated encryption: Embedded hardware encryption acceleration speeds up VPNs and encrypted traffic, reducing CPU load and delivering faster, more secure site-to-site and remote-access connections.
- Optional security stack: Choose firewall, intrusion prevention, and additional security services to harden the network perimeter without adding complexity or trade-offs in performance.
- Modular, scalable design: The Cisco 1921 supports flexible WAN connectivity and expansion through service modules, enabling you to scale throughput and features as your network grows.
- Enterprise-grade management: Cisco IOS Software provides familiar administration, robust policy control, and seamless integration with Cisco security architectures and management tools.
- Ideal for branch offices: A compact form factor, energy efficiency, and reliable operation make it a dependable gateway for voice, data, and security services at the edge.
Technical Details of Cisco 1921 Integrated Services Router
Technical details for the Cisco 1921 ISR are sourced from the specifications section of the product catalog on Synnex using the UPC or SKU as reference. Because configurations vary by model and licenses, exact figures such as aggregate routing throughput, VPN throughput, memory size, interface mix, and expansion options will differ. The following categories summarize the key specifications you can expect to find in the official spec sheets and catalog entries:
- Throughput and performance: Aggregate and VPN throughput capabilities, including the impact of hardware encryption acceleration on overall performance.
- Interfaces and expansion: Built-in Ethernet and serial interfaces with slots or slots-based modules for additional WAN/LAN connectivity and services.
- Security features: Hardware-accelerated encryption, optional firewall, IPS, and other advanced security services integrated with Cisco IOS.
- Management and software: Cisco IOS Software with CLI, Cisco Configuration Professional, and support for monitoring, logging, SNMP, NetFlow, and secure remote management.
- Power, reliability, and environment: Power requirements, temperature ranges, and reliability features appropriate for branch office deployments.
Because the Cisco 1921 ISR lineup includes various configurations and licensing options, customers should consult the Synnex catalog entry for UPC/SKU details to obtain precise values for throughput, memory, interface counts, and supported service modules. In practice, you can expect a device designed to balance performance with a broad feature set, enabling secure, scalable service delivery at edge sites while maintaining investment protection through modular growth pathways.
How to install Cisco 1921 Integrated Services Router
- Plan your deployment by selecting the appropriate WAN interfaces, security features, and license options that align with your branch office needs and growth projections.
- Unbox, place the router in a secure, well-ventilated location, connect power, and establish initial console access using the RJ-45 console port (or USB console, if available) to begin configuration.
- Power on the device and access the Cisco IOS CLI or a graphical management tool such as Cisco Configuration Professional for the initial setup. Configure device naming, administrator credentials, and management access controls before enabling services.
- Enable and configure required services, including routing protocols, VPNs, firewall rules, IPS settings if desired, and QoS policies to prioritize voice and time-sensitive data.
- Apply software updates and licenses as needed, save the configuration, and validate connectivity and security posture with test traffic, monitoring tools, and baseline security checks to ensure a proper, repeatable deployment.
Frequently asked questions
- What is the Cisco 1921 Integrated Services Router? The Cisco 1921 ISR is a modular, edge-focused router in the Cisco 1900 Series designed to deliver secure, integrated services—routing, security, and optional applications—at the network edge for small to mid-size branch offices.
- Does the 1921 include hardware encryption acceleration? Yes. Embedded hardware encryption acceleration offloads cryptographic operations, improving VPN throughput and secure data processing while reducing the load on the main processor.
- Are firewall and IPS optional on the 1921? The platform supports optional firewall, intrusion prevention system (IPS), and related security services that can be added based on your security requirements.
- What kinds of WAN interfaces and expansion options are available? The 1921 provides built-in Ethernet interfaces with expansion slots for service modules, allowing you to add additional WAN/LAN connectivity and features as needed.
- Can the 1921 handle VPNs and remote access? Yes. The router is designed to support site-to-site VPNs and remote-access VPNs, with hardware acceleration helping to maintain performance for encrypted traffic.
- How do I upgrade firmware and licenses? Upgrades are performed through Cisco IOS Software updates and license management, typically via the Cisco software download portal or through authorized resellers, with configuration preserved during upgrades.
- What deployment scenarios is the 1921 best suited for? It is ideal for small to mid-sized branch offices requiring secure edge connectivity, reliable routing, and optional security services, with room for growth as bandwidth needs and security requirements evolve.
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