User's Manual

DEC. 2011—EFT REVIEW DRAFT—CISCO CONFIDENTIAL
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Cisco 1240 Connected Grid Router Hardware Installation Guide
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Chapter 2 Router Hardware Description
Hardware Features Detailed Description
Short-Range Access Point
The router features an integrated, short-range WiFi access point to support a wireless console connection
to the router. Generally, the router is installed on a pole above the ground, which makes a wired console
connection impractical during router operation.
The WiFi connection is available only when the system software is operating. If the system software is
not operating, you cannot use the WiFi connection to connect to or administer the router.
Related Commands
Use the show hardware internal wifi command to display details about the state of the integrated WiFi
access point.
show hardware internal wifi
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.
The RTC value can be synchronized with other time counters in the network, for example the system
time maintained by Precision Time Protocol (PTP).
When the router is powered on using the Reset Buttons, the RTC sets the router memory controller and
clock frequency.
RTC Battery
The RTC includes battery backup for the date and time when the router is not receiving any power.
Specifications
show hardware internal wifi
{event-history | logging-levels | port
| registers | sw-state}
Enter the keyword for the information you want to see.
• event-history—Displays a list of events for the integrated
access point.
• logging-levels—Displays the current logging levels for
the integrated access point.
• port—Displays port information (per port) for the
integrated access point.
• registers—Displays the register values for the integrated
access point.
• sw-state
Specification Description
Battery type
High-capacity lithium (550 mAh)
Battery life span
10 years
Supported interrupts
Time-of-day alarms (Range: 1/second – 1/month)