Asr-9xx-usbconsole-drivers

For decades, network engineers have relied on the classic RJ-45 rollover cable and a DB-9 serial port to access the console of Cisco devices. However, as enterprise and service provider hardware evolved, so did the requirements for management connectivity. The Cisco ASR 9000 Series Aggregation Services Routers—high-end platforms designed for massive scale and carrier-grade reliability—introduced a significant shift in out-of-band management.

– The ASR 9k’s RJ-45 console is separate. Maintain a rollover cable and USB-to-serial adapter as a backup. asr-9xx-usbconsole-drivers

The ASR 900 series utilizes a "Virtual COM Port" (VCP) driver that allows your computer to treat the USB connection as a standard serial COM port. For decades, network engineers have relied on the

sudo screen /dev/ttyUSB0 115200

: