C3900-universalk9-mz.spa.157-3.m8.bin

: They support concurrent data, voice, video, and security services at high speeds (up to 350 Mbps). Modular Architecture : These routers use a field-replaceable Services Performance Engine (SPE)

copy tftp flash: c3900-universalk9-mz.spa.157-3.m8.bin conf t boot system flash:c3900-universalk9-mz.spa.157-3.m8.bin config-register 0x2102 write memory reload C3900-universalk9-mz.spa.157-3.m8.bin

meant it was the all-in-one "universal" image, packed with strong cryptography for the secure tunnels keeping their data safe from prying eyes. The Maintenance Window : They support concurrent data, voice, video, and