Cisco Cisco 1800 2800 3800 8-Port Async Sync EIA-232 Serial High-Speed WIC

Router Best Practices and Selection Guide with Verizon Wireless 4G LTE

Real-World Examples with ISRs

Highlighting real-world uses for network and device features can bring to life their value. While the remainder of this

document lists characteristics and features, this section focuses on real-world needs that are met via programmability

and function of ISR IOS software. Some examples will use IOS command line configuration, while others will use

small files written in tcl and loaded to flash. The engine that drives these “apps” is IOS EEM (embedded event

manager,

www.cisco.com/go/eem

). All the apps below are publicly available as-is (self-supported).

ISR LTE instant site survey via text message

This ISR app provides a way to receive radio signal measurements quickly, via an SMS text message, thus allowing

immediate feedback and the ability to find the optimum spots to place antennas. There is no need for Web or

command line access to the ISR. A smart phone is all that is needed. There are detailed test and short test options.

The app has been combined with other SMS-related functions into a single app, detailed in the Guide for ISR LTE Out-

of-Band Management via SMS - Site Survey, 4G Usage, Diagnostics, and Configuration, available here:

www.cisco.com/c/dam/en/us/td/docs/routers/access/interfaces/software/deployment/guide/guide_isr_lte_sms.pdf

The tcl script and documentation can be downloaded from:

https://supportforums.cisco.com/document/12316801/commands-over-sms

Retrieving ISR LTE status, radio signal and ping results via text message

This app allows for using text messaging as a method to retrieve ISR LTE interface status, radio signal

strength/quality, GPS coordinates (geographical location), and ping results. This is done by sending a text message to

the phone number (e.g. MDN or MS-ISDN) associated with the 4G SIM in the ISR. The script is easily modified.

The app has been combined with other SMS-related functions into a single app, detailed in the Guide for ISR LTE Out-

of-Band Management via SMS - Site Survey, 4G Usage, Diagnostics, and Configuration, available here:

www.cisco.com/c/dam/en/us/td/docs/routers/access/interfaces/software/deployment/guide/guide_isr_lte_sms.pdf

The tcl script and documentation can be downloaded from:

https://supportforums.cisco.com/document/12316801/commands-over-sms

Collecting GPS coordinates and radio statistics from an ISR

This app allows for automatic per-minute logging of GPS coordinates, radio signal strength/quality, and time stamp to

a text file on the ISR’s flash. This simple example could be expanded to send the results every hour to an application

via FTP, email, etc. with the results from multiple locations aggregated and reported.

The app is detailed in the LTE GPS Guide for ISR and CGR, available here:

http://www.cisco.com/en/US/docs/routers/access/interfaces/software/deployment/guide/guide_120913.pdf

The configuration is also included in the same LTE GPS guide.

Synchronizing the ISR clock using GPS

This app provides a way to automatically set an ISR's system clock once per day by synchronizing with a GPS time

reference (stratum 1), and for that ISR to be an NTP time server for other devices (e.g. for a closed network without

access to a public or private time source). This sample could be expanded to send the file every hour via FTP or email.

The app is detailed in the LTE GPS Guide for ISR and CGR, available here:

http://www.cisco.com/en/US/docs/routers/access/interfaces/software/deployment/guide/guide_120913.pdf

The tcl script can be downloaded from

https://supportforums.cisco.com/document/12013976/gpstimezip