USB Console
A single USB 2.0 Type-A receptacle on the front panel of the router provides console access to ROMMON,
Cisco IOS-XE, and diagnostics. While it uses the Type-A connector, it operates as a USB peripheral only for
connection to an external host computer. This interface requires the use of a Type-A to Type-A connector
instead of a standard USB cable.
Use of the USB console is mutually exclusive of the RS232 console port. This interface requires the use of a
Type-A to Type-A USB cable.
Note
USB Memory
A single USB 2.0 Type-A receptacle on the front panel of the router allows external USB mass storage devices,
such as standard USB flash drives. This interface is used to load images, load or store configurations, write
logs, and so on.
More than 8 GB is not supported in ROMMON mode.
Note
Management Port
A single management copper ENET port supporting 10/100/1000 operation is provided on the front panel. It
uses a standard RJ-45 jack.
Dual Rate Ports—1GE/10GE SFP+ Ports
The Gigabit Ethernet SFP ports support the following features:
• 100BASE-FX and 1000Base-X SFP modules.
• Digital optical monitoring as specified by the SFP.
• Any mix of SFPs is supported unless specifically noted.
• Pause flow control as defined by the 802.3x standard.
• Frame size of 9216 bytes.
• Synchronous ENET operation that provides its recovered receive clock as an input clock source for the
SETS and uses the system-wide reference clock to derive its transmit clock.
Copper-based SFPs do not support synchronous ENET operations.
Note
Cisco ASR-920-12SZ-A and Cisco ASR-920-12SZ-D Aggregation Services Router Hardware Installation Guide
12
Overview
USB Console
