Real-Time Clock (Rtc); Temperature Sensor - Cisco 1120 Hardware Installation

Router Hardware Description
Hardware Features
Displaying WiFi Configuration Information for a Cisco IOS Router
Note: For a CGR 1120 router using the Cisco IOS operating system, the WiFi interface is identified as 'Dot11Radio 2/1'.
To display WiFi configuration information, enter any or all of the following commands in privileged EXEC or user EXEC
mode:

show interface dot11Radio 2/1—Displays the status of the interface as up or down, the five second input and output
rate and the number of input and output packets. Also displays hardware details such as radio type (802.11N, 2.4
GHz radio), MAC address and MTU setting.

show controller dot11Radio 2/1—Displays the serial number, software version, and configured frequency and power
settings.
For detailed information on how to use these commands, see the Cisco 1000 Series Connected Grid Routers WiFi
Software Configuration Guide on Cisco.com, at:

Real-Time Clock (RTC)

The router features an integrated real-time clock (RTC) with battery backup that supplies the system software with
accurate date and time information. The integrated router GPS compares the current RTC time with the time at which it
last received a valid signal to ensure accurate timekeeping on the router.
When the router is powered on using the CONFIG Reset button, the RTC sets the router memory controller and clock
frequency. For more information, see the
RTC Battery
The RTC includes battery backup for the date and time when the router is not receiving any power.
Specifications
Specification
Battery type
Battery life span
Supported interrupts

Temperature Sensor

The router hardware features an internal temperature sensor used by the router software to monitor the system operating
temperature. The router can be configured to generate alerts when the temperature falls outside of a user-defined
temperature range. The router can also be configured to store historical temperature data.
For more information about monitoring and storing router temperature data, see the Cisco 1000 Series Connected Grid
Routers Software Configuration Guide Set.
www.cisco.com/go/cgr1000-docs.
CONFIG Reset Button, page
Description
High-capacity lithium (550 mAh)
10 years
Time-of-day alarms (Range: 1/second – 1/month)
Periodic rates (Range: 122 us – 500 ms)
End-of-update-cycle notifications
23.
33