Cisco IOS Software releases deliver cutting-edge technologies and industry-leading Cisco IOS Software functionality. Continuously adapted to meet evolving business needs, the full portfolio of Cisco IOS Software releases is tailored to address the requirements of specific markets and customers. Sound software development, quality assurance, and rapid time to market are fundamental to the success of Cisco customers' networks, and the Cisco IOS Software release strategy reflects these needs....

The Cisco 1841 router provides enhanced modular capabilities while protecting customer investments. The modular architecture has been designed to provide the increased bandwidth and performance required to support concurrent, secure applications. Most existing WICs, multi-flex trunk interface cards (for data only), and Advanced Integration Modules (AIMs) are supported in the Cisco 1841....

The Cisco 1841 router is designed for secure data connectivity and provides significant additional value compared to prior generations of Cisco 1700 Series routers by offering more than a fivefold performance increase and integrated hardware-based encryption enabled by an optional Cisco IOS Software security image....

The Cisco 1841 router features secure, fast, and high-quality delivery of multiple, concurrent services forsmall-to-medium- sized businesses and small enterprise branch offices. The Cisco 1841 router offers embedded hardware-based encryption enabled by an optional Cisco IOS Software security image; further enhancement of VPN performance with an optional VPN acceleration module; an intrusion prevention system (IPS) and firewall functions; interfaces for a wide range of connectivity requirements, including support for optional integrated switch ports; plus sufficient performance and slot density for future network expansion and advanced applications as well as an integrated real-time clock....

The Cisco 1841-3G-G router features secure, fast, and high-quality delivery of multiple, concurrent services for small-to-medium- sized businesses and small enterprise branch offices. The Cisco 1841-3G-G router offers embedded hardware-based encryption enabled by an optional Cisco IOS Software security image; further enhancement of VPN performance with an optional VPN acceleration module, an intrusion prevention system (IPS) and firewall functions, interfaces for a wide range of connectivity requirements, including support for optional integrated switch ports; plus sufficient performance and slot density for future network expansion and advanced applications as well as an integrated real-time clock....

The Cisco 1841-3G-S router features secure, fast, and high-quality delivery of multiple, concurrent services for small-to-medium- sized businesses and small enterprise branch offices. The Cisco 1841-3G-S router offers embedded hardware-based encryption enabled by an optional Cisco IOS Software security image; further enhancement of VPN performance with an optional VPN acceleration module, an intrusion prevention system (IPS) and firewall functions, interfaces for a wide range of connectivity requirements, including support for optional integrated switch ports; plus sufficient performance and slot density for future network expansion and advanced applications as well as an integrated real-time clock....

The Cisco 1841-3G-V router features secure, fast, and high-quality delivery of multiple, concurrent services for small-to-medium- sized businesses and small enterprise branch offices. The Cisco 1841-3G-V router offers embedded hardware-based encryption enabled by an optional Cisco IOS Software security image; further enhancement of VPN performance with an optional VPN acceleration module, an intrusion prevention system (IPS) and firewall functions, interfaces for a wide range of connectivity requirements, including support for optional integrated switch ports; plus sufficient performance and slot density for future network expansion and advanced applications as well as an integrated real-time clock....

The Cisco 1841-3G-S-SEC/K9 router features secure, fast, and high-quality delivery of multiple, concurrent services for small-to-medium- sized businesses and small enterprise branch offices. The Cisco 1841-3G-S-SEC/K9 router offers embedded hardware-based encryption enabled by an optional Cisco IOS Software security image; further enhancement of VPN performance with an optional VPN acceleration module, an intrusion prevention system (IPS) and firewall functions, interfaces for a wide range of connectivity requirements, including support for optional integrated switch ports; plus sufficient performance and slot density for future network expansion and advanced applications as well as an integrated real-time clock....

The Cisco 1841-3G-G router features secure, fast, and high-quality delivery of multiple, concurrent services for small-to-medium- sized businesses and small enterprise branch offices. The Cisco 1841-3G-V-SEC/K9 router offers embedded hardware-based encryption enabled by an optional Cisco IOS Software security image; further enhancement of VPN performance with an optional VPN acceleration module, an intrusion prevention system (IPS) and firewall functions, interfaces for a wide range of connectivity requirements, including support for optional integrated switch ports; plus sufficient performance and slot density for future network expansion and advanced applications as well as an integrated real-time clock....