Home > Articles > Operating Systems, Server > Solaris

Like this article? We recommend


The architectures of two enterprise management software products, Sun MC 3.0 software—an EMS solution and a development environment for extending the capabilities—and AdventNet WebNMS 2.3—a standards compliant development environment that has gained acceptance in the Telco environments. The following sections detail the features that produce the benefits of these two products.

Sun MC 3.0 Software Architecture

Sun MC 3.0 software evolved from several generations of Sun Network and Systems Management Tools. Starting with SunNet Manager platform, in the late 1980's, the architecture consisted of a simple manager-agent-manager model. SunNet Manager platform was extensible and included a remote procedure call (RPC)-based communication model between a manager and agents. SunNet Manager platform served its purpose well for LAN deployments, but reached limitations in larger enterprise solutions. Sun's subsequent generation product, the Solstice Enterprise Manager™ software, was designed for large enterprise deployments. Solstice Enterprise Manager software was scalable, flexible, object-oriented, and was targeted as a development and management platform out of the box. Solstice Enterprise Manager was highly extensible, and supported SNMP, CMIP, and Telecommunications Management Network (TMN) protocol. The rapid adoption of Java technology-based management applications created another next-generation product, Sun Management Center software, (version 3.0 is the current release as of the date of this article). Sun MC 3.0 software is a comprehensive systems management tool for managing Sun servers, storage, and the Solaris™ Operating Environment. Sun MC software is also a flexible framework with independent distributed services that are available to management applications and third-party management products. The architecture includes a modular pluggable architecture that can add and remove Java technology and non Java technology services.

Sun MC software is designed primarily to manage Sun Systems well. AdventNet WebNMS is designed to manage a variety of devices by integrating other vendor-specific EMS products. The integration of Sun MC and AdventNet WebNMS softwares, permits a flexible and effective solution, because every vendor knows how to manage their own devices best.

FIGURE 6 shows a high-level overview of the Sun MC 3.0 software architecture. Sun MC software consists of following tiers:

  • Client Tier—Management clients access the server through a variety of protocols and technologies, such as a Web browser and Java application.

  • Server Tier—Interfaces with the client accepting and processing requests, and routes to the appropriate service or agents. The server also propagates alarms and event messages to the clients. The server is a central control center for all distributed information. Sun MC 3.0 software offers a comprehensive set of APIs for integration with other management systems, and empowers developers in creating sophisticated management applications.

  • Agent Tier—Resides on the managed device and provides the communication interface between the native device and the Sun MC software server process.

Figure 6FIGURE 6 Sun MC 3.0 Software High-Level Architecture Overview

Sun MC 3.0 software also has many of the core NMS functions, such as Event Services, Topology Services, Configuration Services, etc. The Sun MC software agents are intelligent agents, far more sophisticated than the traditional simple SNMP agents that only perform limited operations. The Sun MC software agents are dynamically configurable and autonomous.

Sun™ Developer Management Center is a separate product, which provides various APIs and tools to create not only management applications using the exposed client APIs, but also to extend the capabilities of the Sun MC software by creating loadable modules that run in the server tier. These modules can access the services shown in FIGURE 6 and create sophisticated event filter and correlation services. The server APIs allow the integration and creation of new services, such as emitters of notifications, receptors of events, protocol modules, etc.

AdventNet WebNMS 2.3 Architecture

FIGURE 7 shows a high-level overview of the AdventNet WebNMS architecture.

The clients can be Java application or browser-based. They interface with the front-end Web servers and are typically load balanced by a multilayer switch. The core functions include a discovery engine that maps discovered devices to a managed object and is defined by a software class. This information is then stored in the database. The event manager includes a hierarchical structure starting from a trap manager that identifies the trap and creates an event object. This object is then parsed to create alarm objects. At each level, redundant data is discarded and events are correlated. The map server controls the display, including the displayed objects and appropriate backgrounds, when zooming in and out. The configuration server stores the configuration of all discovered devices, and is capable of reconfiguring a device as needed. The polling engine performs periodic polling for status and performance data.

Figure 7FIGURE 7 AdventNet WebNMS Platform Overview

FIGURE 8 presents an overview of the components in AdvenNet WebNMS and the interactions between them.

Figure 8FIGURE 8 AdventNet WebNMS Platform Architecture

Each component can be distributed. There can be one or more components of each type based on performance, scalability, and availability requirements. There are five tiers that are detailed in the following sections.

Mediation Server Tier

The mediation server (or management) tier provides XML mediation for all southbound management protocols like SNMP, TL1, CORBA, TFTP, XML, CLI/Telnet, etc. A provider interface facilitates integration of other protocols. Common management functions are handled in this layer, making the protocol providers limited with protocol-specific operations only. The management server provides multiple interfaces for application development like XML message interface, Java technology, APIs, etc.

Back-end Tier

The back-end server tier consists of the core business logic related to management functions like fault, configuration, performance, security, service provisioning, etc. The main aspects of the back-end server tier are:

  • Core Management —Performs functions like event correlation, alarm notification and management, template-based provisioning, batch configuration and rollback, etc.

  • Module Management—A module control interface facilitates the starting and stopping of modules independently.

  • Security and Audit—All the back-end tier modules support authorization and audit, so that the various administrative operations can be traced.

Database Tier

Any relational database management system (RDBMS) that provides a Java Database Connectivity™ (JDBC™) software driver is supported. State information can be maintained in a database, making it easier to distribute the components and handle failover. This tier allows a solution to leverage the benefits of transaction support, database synchronization, and object locking for data integrity, security, and availability.

Front-end Tier

The front-end tier consists of the Web container that provides Web access to management information, the client communication management module, and the Enterprise JavaBeans™ (EJB™) technology session beans for the management functions. These items generate views for the clients and forward commit requests to the back-end tier. The main aspects of the front-end server tier are:

  • Client communication—Various transport protocols, such as TCP, Java™ Remote Method Invocation (Java RMI) technology, HTTP, HTTPs, SSL, etc., are used.

  • Session beans—The stateless, EJB technology deployable session beans generate views from the database based on client requests.

  • Updates to client—A subscription-based notification used to allow the front-end tier to handle high rates of updates to the clients. In this model, clients register for the updates they are interested in, and the front-end tier server notifies them of any changes.

Client Tier

The J2EE configuration client (for rich GUI) and the HTML client (for Web access over low speed links) models are provided.

InformIT Promotional Mailings & Special Offers

I would like to receive exclusive offers and hear about products from InformIT and its family of brands. I can unsubscribe at any time.


Pearson Education, Inc., 221 River Street, Hoboken, New Jersey 07030, (Pearson) presents this site to provide information about products and services that can be purchased through this site.

This privacy notice provides an overview of our commitment to privacy and describes how we collect, protect, use and share personal information collected through this site. Please note that other Pearson websites and online products and services have their own separate privacy policies.

Collection and Use of Information

To conduct business and deliver products and services, Pearson collects and uses personal information in several ways in connection with this site, including:

Questions and Inquiries

For inquiries and questions, we collect the inquiry or question, together with name, contact details (email address, phone number and mailing address) and any other additional information voluntarily submitted to us through a Contact Us form or an email. We use this information to address the inquiry and respond to the question.

Online Store

For orders and purchases placed through our online store on this site, we collect order details, name, institution name and address (if applicable), email address, phone number, shipping and billing addresses, credit/debit card information, shipping options and any instructions. We use this information to complete transactions, fulfill orders, communicate with individuals placing orders or visiting the online store, and for related purposes.


Pearson may offer opportunities to provide feedback or participate in surveys, including surveys evaluating Pearson products, services or sites. Participation is voluntary. Pearson collects information requested in the survey questions and uses the information to evaluate, support, maintain and improve products, services or sites, develop new products and services, conduct educational research and for other purposes specified in the survey.

Contests and Drawings

Occasionally, we may sponsor a contest or drawing. Participation is optional. Pearson collects name, contact information and other information specified on the entry form for the contest or drawing to conduct the contest or drawing. Pearson may collect additional personal information from the winners of a contest or drawing in order to award the prize and for tax reporting purposes, as required by law.


If you have elected to receive email newsletters or promotional mailings and special offers but want to unsubscribe, simply email information@informit.com.

Service Announcements

On rare occasions it is necessary to send out a strictly service related announcement. For instance, if our service is temporarily suspended for maintenance we might send users an email. Generally, users may not opt-out of these communications, though they can deactivate their account information. However, these communications are not promotional in nature.

Customer Service

We communicate with users on a regular basis to provide requested services and in regard to issues relating to their account we reply via email or phone in accordance with the users' wishes when a user submits their information through our Contact Us form.

Other Collection and Use of Information

Application and System Logs

Pearson automatically collects log data to help ensure the delivery, availability and security of this site. Log data may include technical information about how a user or visitor connected to this site, such as browser type, type of computer/device, operating system, internet service provider and IP address. We use this information for support purposes and to monitor the health of the site, identify problems, improve service, detect unauthorized access and fraudulent activity, prevent and respond to security incidents and appropriately scale computing resources.

Web Analytics

Pearson may use third party web trend analytical services, including Google Analytics, to collect visitor information, such as IP addresses, browser types, referring pages, pages visited and time spent on a particular site. While these analytical services collect and report information on an anonymous basis, they may use cookies to gather web trend information. The information gathered may enable Pearson (but not the third party web trend services) to link information with application and system log data. Pearson uses this information for system administration and to identify problems, improve service, detect unauthorized access and fraudulent activity, prevent and respond to security incidents, appropriately scale computing resources and otherwise support and deliver this site and its services.

Cookies and Related Technologies

This site uses cookies and similar technologies to personalize content, measure traffic patterns, control security, track use and access of information on this site, and provide interest-based messages and advertising. Users can manage and block the use of cookies through their browser. Disabling or blocking certain cookies may limit the functionality of this site.

Do Not Track

This site currently does not respond to Do Not Track signals.


Pearson uses appropriate physical, administrative and technical security measures to protect personal information from unauthorized access, use and disclosure.


This site is not directed to children under the age of 13.


Pearson may send or direct marketing communications to users, provided that

  • Pearson will not use personal information collected or processed as a K-12 school service provider for the purpose of directed or targeted advertising.
  • Such marketing is consistent with applicable law and Pearson's legal obligations.
  • Pearson will not knowingly direct or send marketing communications to an individual who has expressed a preference not to receive marketing.
  • Where required by applicable law, express or implied consent to marketing exists and has not been withdrawn.

Pearson may provide personal information to a third party service provider on a restricted basis to provide marketing solely on behalf of Pearson or an affiliate or customer for whom Pearson is a service provider. Marketing preferences may be changed at any time.

Correcting/Updating Personal Information

If a user's personally identifiable information changes (such as your postal address or email address), we provide a way to correct or update that user's personal data provided to us. This can be done on the Account page. If a user no longer desires our service and desires to delete his or her account, please contact us at customer-service@informit.com and we will process the deletion of a user's account.


Users can always make an informed choice as to whether they should proceed with certain services offered by InformIT. If you choose to remove yourself from our mailing list(s) simply visit the following page and uncheck any communication you no longer want to receive: www.informit.com/u.aspx.

Sale of Personal Information

Pearson does not rent or sell personal information in exchange for any payment of money.

While Pearson does not sell personal information, as defined in Nevada law, Nevada residents may email a request for no sale of their personal information to NevadaDesignatedRequest@pearson.com.

Supplemental Privacy Statement for California Residents

California residents should read our Supplemental privacy statement for California residents in conjunction with this Privacy Notice. The Supplemental privacy statement for California residents explains Pearson's commitment to comply with California law and applies to personal information of California residents collected in connection with this site and the Services.

Sharing and Disclosure

Pearson may disclose personal information, as follows:

  • As required by law.
  • With the consent of the individual (or their parent, if the individual is a minor)
  • In response to a subpoena, court order or legal process, to the extent permitted or required by law
  • To protect the security and safety of individuals, data, assets and systems, consistent with applicable law
  • In connection the sale, joint venture or other transfer of some or all of its company or assets, subject to the provisions of this Privacy Notice
  • To investigate or address actual or suspected fraud or other illegal activities
  • To exercise its legal rights, including enforcement of the Terms of Use for this site or another contract
  • To affiliated Pearson companies and other companies and organizations who perform work for Pearson and are obligated to protect the privacy of personal information consistent with this Privacy Notice
  • To a school, organization, company or government agency, where Pearson collects or processes the personal information in a school setting or on behalf of such organization, company or government agency.


This web site contains links to other sites. Please be aware that we are not responsible for the privacy practices of such other sites. We encourage our users to be aware when they leave our site and to read the privacy statements of each and every web site that collects Personal Information. This privacy statement applies solely to information collected by this web site.

Requests and Contact

Please contact us about this Privacy Notice or if you have any requests or questions relating to the privacy of your personal information.

Changes to this Privacy Notice

We may revise this Privacy Notice through an updated posting. We will identify the effective date of the revision in the posting. Often, updates are made to provide greater clarity or to comply with changes in regulatory requirements. If the updates involve material changes to the collection, protection, use or disclosure of Personal Information, Pearson will provide notice of the change through a conspicuous notice on this site or other appropriate way. Continued use of the site after the effective date of a posted revision evidences acceptance. Please contact us if you have questions or concerns about the Privacy Notice or any objection to any revisions.

Last Update: November 17, 2020