Network Management Subsystem - 3 Dimetra IP System Components

3 Dimetra IP System Components

3.1.3 Network Management Subsystem

The Network Management Subsystem is based on the client/server networking model. The NMS meshes seamlessly and scales with the other infrastructure elements across the packet-switched network. The network management subsystem uses the Microsoft® _Windows_{operating system as the platform for the client personal}

computer (PC) workstation applications.

Network management is a set of software tools that support the management of a complex radio communications system and its component parts, which include radios, computers, and inter-networking components. Network management tools support the maximization of resource availability while helping to minimize system downtime and maintenance costs.

Figure 3-2 Network Management Subsystem

Secondary Zone Server Primary Management Server Primary Zone Server MTIG-E1 Server 1 EC NTS MCC7500 NM Client

KMF Voice Logging Replay Station AIS GGSN1

Core LAN Switch 1&2

MTIG-IP Server 1 Primary Data Server CWR Panel E1 - CGE1 BTS

Remote Control Zone Other Zone E1 - GBN Cus tomer Network Router Internet VPN Router VPN Client Mutually exclusive T o P A B X Secondary Zone Server Primary Zone Server MTIG-E1 Server 1 EC NTS MCC7500

KMF Voice Logging Replay Station AIS GGSN1

Core LAN Switch 1&2 MTIG-IP Server 1 Primary Data Server CWR Panel E1 - CGE1 BTS

Remote Control Zone Other Zone

E1 - GBN

E1 - GBN CCCCCus tomer Networkus tomer Networkus tomer Networkus tomer Networkus tomer Network

Router Internet Internet VPN Router VPN Client Mutually exclusive T o P A B X

User Configuration Server Air Traffic Router Zone Database Server Unified Event Manager Zone Statistics Server

The server components of the Network Management subsystem reside on the Primary Management Server and include User Configuration Server (UCS), Zone Database Server (ZDS), Zone Statistics Server (ZSS), Unified Event Manager (UEM), System Statistics Server (SSS), and Air Traffic Router (ATR).

Network management provides the tools, commonly known as FCAPS, for fault, configuration, accounting performance and security management. The network management functions in Dimetra IP are distributed across several applications and servers that are installed in one of three configurations: system, zone, and remote. The configurations are designated by the name Operations Support Systems (OSS). The individual network management building blocks of the Zone OSS and Cluster OSS can be divided into two categories:

• Private Radio Network Management (PRNM) client applications such as: – ZoneWatch

– Radio Control Manager (RCM) – Zone Configuration Manager (ZCM) – User Configuration Manager (UCM)

– Radio Control Manager Reports (RCM Reports) – Historical Reports

– Dynamic Reports – ATIA Log Viewer – Affiliation Display

– Unified Event Manager (UEM) – Software Download Manager

• Network Transport Management (NTM) client applications. – Network Configuration Tool Express (NCT)

– Trivial File Transfer Protocol (TFTP)

3.1.3.1 Network Management Servers

The NM subsystem includes the server applications listed below.

3.1.3.2 Operations Support Systems

Operations Support Systems (OSS) is a term used to specify the devices used to manage the system. This includes network management servers and clients.

• Zone OSS: The Zone OSS refers to the network management system for a given Zone. The servers are always colocated with the MSO equipment. Examples are Zone Database Server (ZDS), Air Traffic Router (ATR), Zone Statistics Server (ZSS), and Unified Event Manager (UEM).

• Cluster OSS: The Cluster OSS manages a cluster of up to four zones from a single location. To accomplish its task, the Cluster OSS must have a routed path to all supported zones. The Cluster OSS consists of the combined User Configuration Server (UCS), Unified Event Manager Server, and the Network Transport Performance Server.

3.1.3.2.1 Fault Management at the Zone Level

A zone includes a workstation containing the Unified Event Manager and the traps and MIBs to the networking equipment. This integrated set of tools is the core application for fault and configuration management for a majority of the transport devices in the system and provides the following services:

• The Unified Event Manager provides the topology map, alarm browser, and MIB browser interface. • The Unified Event Manager application adds network management tools and hierarchical topology maps

specific to Motorola devices.

• Traps and MIBs add fault and performance network management tools for the networking devices.

3.1.3.2.2 Configuration Management at the Zone Level

Zone-level configuration management tools are available to configure all the devices in the zone. To the network management user, there is a single integrated interface for accessing configuration information for all devices in the zone. The network management clients, which have the NTMS installed allow users to navigate to configure any device in the network.

The tools for configuration management include:

• Telnet can be used to access the Command Line Interface (CLI) of the routers and core LAN switch. • A script on the Network Management Client (NM Client) is used to back up and restore the HP core

LAN switch OS and configuration file.

3.1.3.2.3 Security Management at the Zone Level

The routers and switches have an independent login which is required if a user telnets to the device. NM includes features for setting user privileges and controlling their access to view and/or modify information contained in the configuration databases. Optional Agency Partitioning software allows a system administrator to assign access privileges to specific applications. These applications include Configuration Manager, Radio Control Manager, Historical Reports, and ZoneWatch. The administrator can grant or restrict user access to particular zones in the cluster.

3.1.3.2.4 Network Management at the Cluster OSS

The Cluster OSS acts as a cluster-level integration point. Therefore, the Cluster OSS consists of applications to manage cluster wide settings.

InfoVista®_{with integrated MIBs from all networking devices collects detailed network performance information at}

each Cluster OSS.

In addition, some configuration needs to be done at the device level to report information appropriately to either the zone applications, the cluster OSS applications, or both. For example, the trap destination and community string needs to be configured for each device.

3.1.3.2.5 Fault Management at the Cluster OSS

One of the UEM servers in each cluster is configured to collect and present information from all zones in the cluster. This allows a network administrator to view all the alarm and status indicators for all the equipment in the entire cluster.

Clusterwide Fault Management on some systems may only refer to Dimetra Radio System managed objects and not necessarily IP devices (Routers, LAN Switches) depending on network configurations.

3.1.3.2.6 Configuration Management at the Cluster OSS

The cluster wide settings are set through the User Configuration Manager (UCM) which includes all the settings for radio users, talkgroups/multigroups, network management users, cluster wide parameters, and ZoneWatch settings within the particular cluster. Each cluster has its own User Configuration Server (UCS) to centrally store the cluster parameters. Cluster configuration settings are distributed to appropriate equipment in each zone as required.

3.1.3.2.7 Security Management at the Zone and Cluster OSS

All network management applications have defined access privileges for each user. All the applications support password protection at a minimum. A single login allows the user to access all the applications for which they have access privileges without having to login to multiple applications. However, this does not include applications, such as Command Line Interface (CLI), that are resident on the networking devices. Users must log on to the networking devices to run resident network management applications.

In document Motorola TETRA Infrastructure Technical Documentation Library Dimetra IPCompact8.1 System Overview DIPC (Page 81-85)