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Cisco MGM Orientation

Cisco MGM Orientation

The Cisco Media Gateway Manager (Cisco MGM) can deploy, configure, and manage a group of Release 1.2 Cisco MGX 8260 Media Gateways in one or more Points of Presence (POP). This chapter contains the following sections:

Overview

Cisco MGM supports four of the five major OSI system management functional areas—fault, configuration, performance, and security. Cisco MGM also conforms to the Telecommunications Management Network (TMN) model, operating as an Element Management System (EMS) at the element management layer. As such, Cisco MGM manages a subnetwork of homogenous network elements.

Cisco MGM includes a graphical user interface that displays network information and supports device management. This interface extends the capabilities of the Cisco Element Management Framework (Cisco EMF) to include managing Cisco MGX 8260 Media Gateways. Cisco MGM includes links to two management tools, the Cisco WebViewer and the Cisco MGX 8260 command line interface, from which you configure individual nodes.

Network management layer applications can communicate with Cisco MGM through an optional CORBA/IDL interface provided by the Cisco Voice CORBA Gateway (Cisco VCG). This gateway is a separate product that extends the capabilities of the Cisco MGM product.

Management Features

Cisco MGM implements fault, configuration, performance, and security features.

Fault Management

Using Cisco MGM, you can monitor the network for faults and clear alarms. The system handles alarms and events as follows:

Using the Cisco WebViewer tool, you can view threshold-based alarms, gather performance statistics, perform line diagnostic tests, and configure email or pager alerts for alarms. You launch the Cisco WebViewer application directly from Cisco MGM.

Configuration Management

Cisco MGM provides the following configuration management features:

An optional extension, the Cisco Voice CORBA Gateway, provides a programmatic interface from which higher-level managers can fully configure and monitor the Cisco MGX 8260 Media Gateways.

Performance Management

Cisco MGM supports performance management as follows:

This tool displays performance statistics and real-time counters for all DS1, DS3, and SONET lines. Also, you can adjust the counter thresholds to refine performance collection criteria.

This interface propagates performance statistics to higher-level managers. On request, Cisco MGM retrieves performance statistics from the Cisco MGX 8260 Media Gateways, packages the statistics in a bulk file, and forwards it to the manager.

Security Management

Cisco MGM security uses the mechanisms of Cisco EMF, which authenticates users based on names and passwords. When using the Cisco WebViewer or CLI management interfaces, the Cisco MGX 8260 Media Gateway also authenticates users based on Cisco MGX 8260 user accounts. Both systems support security profiles that define access rights for typical users, from administrators to guests.

Messages between Cisco MGM and network elements is secured using SNMP community strings. You configure unique community strings known by all network elements to limit and control access.

Cisco MGM Architecture

Cisco MGM extends the functionality of Cisco EMF to include management of Cisco MGX 8260 Media Gateways (see Figure 1-1).


Figure 1-1: Cisco MGM Architecture


Cisco MGM is an element manager that adds custom GUI windows and network modeling to the standard Cisco EMF product. Users manage Cisco MGX 8260 Media Gateway nodes from the Cisco EMF GUI, which includes a link to the Cisco WebViewer configuration tool. Cisco MGM communicates with Cisco MGX 8260 nodes using SNMPv1 and TFTP protocols; the Cisco WebViewer uses a standard web browser, such as Netscape for Solaris, that communicates with the HTTP server in each Cisco MGX 8260 Media Gateway. In addition, you can launch a telnet session to an individual chassis directly from a Cisco MGM menu.

An optional extension, the Cisco Voice CORBA Gateway, provides a language-independent Application Programming Interface (API) from which higher-level managers can configure and monitor the Cisco MGX 8260 Media Gateways. This interface supports both Cisco and third-party management applications.

Management Tasks by Interface

Depending on the management task, you use one of three interfaces:

The following table organizes management tasks by management interface:


Table 1-1: Management Tasks by Cisco MGM Interface
Management Task Cisco MGM GUI WebViewer/CLI Cisco VCG1

Automatic discovery of network elements

Yes

-

-

Configure system date and time

Yes2

Yes

Yes

Configure Dsx1/Dsx3/SONET/Fast Ethernet

-

Yes

Yes

Configure D1SapProfile, MacSapProfile, D channel

-

Yes

Yes

Configure MGCP parameters

-

Yes

Yes

Configure IPDC parameters

-

Yes

-

Configure Backhaul Sets, Groups, and Sessions

-

Yes

Yes

Subchassis discovery and synchronization

Yes

-

Yes

Software image and config file download

Yes

Yes

Yes

Upgrade image and configure redundancy

-

Yes

-

View Dsx1/Dsx3/Sonet line statistics information

-

Yes

Yes

View Dsx1/Dsx3/Sonet line performance history information

-

Yes

Yes

1The Cisco Voice CORBA Gateway is an optional addin for the Cisco MGM product.
2This is a standard Cisco EMF feature.

Cisco WebViewer Features

Using the Cisco WebViewer, you can perform the following tasks:

The Cisco MGX 8260 Media Gateway enforces security with user accounts and access levels. Users must log onto the Cisco MGX 8260 Media Gateway before performing any task, and authenticated users can perform only those tasks permitted by their access level. The Cisco MGX 8260 Media Gateway supports up to 20 user accounts, each with access privileges ranging from full control to guest.

The Cisco WebViewer provides dedicated Cisco MGX 8260 Media Gateway information, including system settings, node configurations, service provisioning, and system test features. The Cisco WebViewer get information from the SNMP core, but presents it in simple text and graphic forms.

The Cisco WebViewer provides real-time information on Cisco MGX 8260 status, alarms, events, and statistics. Using Java scripts and applets, the Cisco WebViewer constantly monitors the Cisco MGX 8260 Media Gateway and updates the user interface.

Every screen has a prominent alarm indicator that shows the current operational status. With a single click, users can obtain detailed information on outstanding alarms and events.

Also, the Cisco MGX 8260 Media Gateway can notify users by email when alarms or events occur.

The Cisco WebViewer reports current and historical performance data, and displays performance statistics when performance drops below user-defined levels. Using this feature, operators can react to problems that could degrade performance before the system fails.

Using the alarm and test features, maintenance personnel can often diagnose and solve equipment problems directly from the Cisco WebViewer. For example, if a DS1 line raises a performance alarm, maintenance personnel can diagnose the problem with loopback and BERT tests and initiate corrective action.

Cisco Voice CORBA Gateway Features

Network management layer applications can communicate with Cisco MGM through an optional CORBA/IDL interface provided by the Cisco Voice CORBA Gateway. Using this gateway, network managers can monitor and configure Cisco MGX 8260 Media Gateways.

Cisco VCG provides the following network management interfaces:

An event notification service filters and reports alarms and events to client applications. Clients register for the desired alarms.

An object access process traverses the object hierarchy to discover and upload MGX 8260 objects in bulk. Client applications can configure individual attributes on a single chassis, or perform bulk configurations across multiple chassis.

Client applications can retrieve performance statistics for DS1, DS3, and SONET lines through the Cisco VCG interface.

For more information, see the Cisco Voice CORBA Gateway for the MGX 8260 Media Gateway User Guide.


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Posted: Thu Jul 18 00:12:56 PDT 2002
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