Web Diagnostic Interface Reference
Web Diagnostic Interface Reference
In an effort to facilitate the process of installing and diagnosing a modem in the field, the USRobotics Cable Modem Web interface is available to the end user or Multiple System Operator (MSO) field installation technician. The information from this Web interface can be used to make accurate determinations about the operating status of the USRobotics Cable Modem and can also help to troubleshoot most issues that are encountered in the field.
Figure 3 - 1 Web Interface Login
The USRobotics Cable Modem Web interface is available at http://cablemodem.web or at http://192.168.100.13. The http://cablemodem.web instance is available on both registered and nonprovisioned modems.
3For code revisions prior to 2.13.6001, the WWW interface is accessible through both the http://cablemodem.web and http;//192.168.100.1. After revision 2.13.6001 it is only accessible via http;//192.168.100.1.
The ability to access this Web interface is evidence that the CPE connection to the cable modem is enabled and properly functioning.
Figure 3 - 2 Configuration
The cable modem Configuration page provides configuration details about the USRobotics Cable Modem, including:
The cable modem Status page provides the status of the various phases of the DOCSIS provisioning process, such as:
It also provides links to the Downstream Status, Upstream Status, and Upstream Burst Descriptor pages.
The Downstream Status page provides operational details regarding the downstream frequency the USRobotics Cable Modem was able to acquire via the QAM lock process. Details such as:
It also provides links to the Cable Modem Status, Upstream Status, and Upstream Burst Descriptor pages.
The Upstream Status page provides details regarding the upstream channel on which the USRobotics Cable Modem was able to successfully range and register.
The page also provides links to the Cable Modem Status, Downstream Status, and Upstream Burst Descriptor pages.
Upstream Burst Status
The Upstream Burst Status page provides details regarding all available upstreams the USRobotics Cable Modem is able to determine are available from the CMTS.
It also provides links to the Cable Modem Status, Downstream Status, and Upstream Status pages.
The Operational Configuration page provides the operational details for which the USRobotics Cable Modem has been configured. This information is a combination of details acquired through the provisioning and registration processes.
The Interface Rate page displays the cumulative count of packets, in each direction, of each interface for the time that the cable modem is powered on or since the last reset. The Packet Rate is simply the number of packets divided by the seconds. This page refreshes every few seconds.
Set Search Frequency Parameters
The Set Search Frequency Parameters page is available to the MSO for the purpose of eliminating or reducing the time required to scan for a downstream channel. The table to the right of the frame is a history of downstream channels that have previously provided QAM lock. This history is maintained through successive power cycles. The USRobotics Cable Modem will always refer to this table and attempt to QAM lock known, good frequencies before scanning the entire frequency range. If the MSO wishes to reduce the amount of time that it takes to scan, range, and register, entering the exact frequencies of active DOCSIS downstreams in this table is the most direct method of accomplishing this.