: Native support for hardware-based encryption acceleration to maintain high IPsec throughput. Current Status
The file is a Cisco IOS Software image for the Cisco 1900 Series Integrated Services Routers (ISR) . Specifically, this file represents the 15.8(3)M7 maintenance release of the Universal software image, which includes a broad set of Cisco IOS features including strong encryption (K9). Image Technical Details c1900universalk9mzspa1583m7bin top