Troubleshooting guide

CHAPTER
9-1
Cisco Broadband Local Integrated Services Solution Troubleshooting Guide
OL-5169-01
9
Troubleshooting Cisco Media Gateways
Media Gateway Management
The Cisco IOS software installed on the media gateways provides an array of network management
capabilities, including:
• SNMP and RMON Support—The media gateways are fully manageable using the Simple Network
Management Protocol (SNMP) and imbedded Remote Monitoring (RMON) capabilities:
SNMP provides for the collection of information about each controller and interface, which can be
polled through any SNMP-compatible network management system.
RMON acts as a remote protocol analyzer and LAN probe.
Using the Alarm RMON group, you can set a threshold on any integer-valued Management
Information Base (MIB) variable. When the threshold is crossed, an event, defined in the Event
RMON group, is triggered. With these capabilities, the system can detect and analyze overloaded
conditions and congestion in real-time.
• Network Management Systems—The media gateways support both CLI and the CiscoView
graphical user interface (GUI) for comprehensive, flexible network management.
CiscoView provides dynamic status, statistics, and comprehensive configuration information for
Cisco switches, routers, NASs, concentrators, and adapters. It displays a graphical view of Cisco
devices, provides configuring and monitoring functions, and offers basic troubleshooting.
• Modem Management—Cisco offers two types of modems, basic and managed. Managed modems
offer superior reporting and statistics in the CiscoView application, including troubleshooting and
monitoring modem connections on individual modems or groups of modems while calls are in
progress.
You can manage modems using the same tools used to manage the rest of the network. In addition,
managed modems provide an out-of-band management feature that allows you to reduce problem
detection and resolution time from a remote site.
Through out-of-band management, you can view real-time information (for current or previous
calls) such as modem modulation scheme, modem protocol, modem EIA/TIA-232 signal states,
modem transmit and receive states, and analog signal-to-noise ratio.