Academic Tutorials

English | French | Portugese | German | Italian
Home Advertise Payments Recommended Websites Interview Questions FAQs
News Source Codes E-Books Downloads Jobs Web Hosting

TCP/IP Tutorial
TCP/IP Introduction
TCP/IP Addressing
TCP/IP Protocols
What is TCP/IP ?
HTTP and HTTPS protocols
MIME and IMAP protocols
SSL and SMTP protocols
POP and FTP protocols
NTP and DHCP protocols
SNMP and LDAP protocols
ICMP and ARP protocols
RARP,BOOTP and PPTP protocols
TCP/IP email

HTML Tutorials
HTML Tutorial
XHTML Tutorial
CSS Tutorial
TCP/IP Tutorial
CSS 1.0
CSS 2.0
XML Tutorials
XML Tutorial
XSL Tutorial
XSLT Tutorial
DTD Tutorial
Schema Tutorial
XForms Tutorial
XSL-FO Tutorial
XML DOM Tutorial
XLink Tutorial
XQuery Tutorial
XPath Tutorial
XPointer Tutorial
RDF Tutorial
SOAP Tutorial
WSDL Tutorial
RSS Tutorial
WAP Tutorial
Web Services Tutorial
Browser Scripting
JavaScript Tutorial
VBScript Tutorial
DHTML Tutorial
HTML DOM Tutorial
WMLScript Tutorial
E4X Tutorial
Server Scripting
ASP Tutorial
PERL Tutorial
SQL Tutorial
ADO Tutorial
Apple Script
PL/SQL Tutorial
SQL Server
.NET (dotnet)
.Net Mobile
C# : C Sharp
SVG Tutorial
Flash Tutorial
Media Tutorial
SMIL Tutorial
Photoshop Tutorial
Gimp Tutorial
Gnuplot Programming
GIF Animation Tutorial
Scientific Visualization Tutorial
Web Building
Web Browsers
Web Hosting
W3C Tutorial
Web Building
Web Quality
Web Semantic
Web Careers
Weblogic Tutorial
Web Site Hosting
Domain Name
Java Tutorials
Java Tutorial
JSP Tutorial
Servlets Tutorial
Struts Tutorial
EJB Tutorial
JMS Tutorial
JMX Tutorial
Programming Langauges
C Tutorial
C++ Tutorial
Visual Basic Tutorial
Data Structures Using C
Assembly Language
Forth Programming
Lisp Programming
Data Warehousing
CGI Programming
Emacs Tutorial
Soft Skills
Communication Skills
Time Management
Project Management
Team Work
Leadership Skills
Corporate Communication
Negotiation Skills
Database Tutorials
Operating System
Software Testing
SAP Module
Business Warehousing
SAP Basis
Material Management
Sales & Distribution
Human Resource
Customer Relationship Management
Production and Planning
Networking Programming
Corba Tutorial
Networking Tutorial
Microsoft Office
Microsoft Word
Microsoft Outlook
Microsoft PowerPoint
Microsoft Publisher
Microsoft Excel
Microsoft Front Page
Microsoft InfoPath
Microsoft Access
Financial Accounting
Managerial Accounting
Network Sites

SNMP and LDAP protocols

Previoushome Next

The Simple Network Management Protocol (SNMP) is an application layer protocol that facilitates the exchange of management information between network devices and it is part of the Transmission Control Protocol/Internet Protocol (TCP/IP) protocol suite. SNMP enables network administrators to manage network performance,solve and find network problems, and plan for network growth.


Two versions of SNMP exist: SNMP version 1 (SNMPv1) and SNMP version 2 (SNMPv2) and both versions have a number of features in common, but SNMPv2 offers enhancements, such as additional protocol operations. Standardization of yet another version of the SNMP—SNMP Version 3 (SNMPv3)—is pending.

SNMP Basic Components

An SNMP-managed network consists of three key components: agents, managed devices, and network-management systems (NMSs).

A managed device is the network node that contains an SNMP agent and that resides on a managed network. Managed devices store and collect management information and make this information available to NMSs using SNMP. Managed devices, sometimes called network elements, can be access server and srouters, switches and bridges, hubs, computer hosts, or printers.

An agent is a network-management software module that resides in a managed device and it has local knowledge of management information and translates that information into a form compatible with SNMP.

An NMS executes applications that control and monitor managed devices. NMSs provide the bulk of the processing and memory resources required for network management and one or more NMSs must exist on any managed network.

Figure below illustrates the relationships of these three components.

SNMP Basic Commands

Managed devices are controlled and monitored using four basic SNMP commands: read, write, trap, and traversal operations.

The read command is used by an NMS to monitor managed devices and the NMS examines different variables that are maintained by managed devices.

The write command is used by an NMS to control managed devices and the NMS changes the values of variables stored within managed devices.

The trap command is used by managed devices to asynchronously report events to the NMS and when certain types of events occur, a managed device sends a trap to the NMS.

Traversal operations are used by the NMS to determine which variables a managed device that supports and to sequentially gather information in variable tables, such as a routing table.


  • Light Weight Directory Access Protocol (LDAP) is an open network protocol standard that designed to provide access to distributed directories. LDAP provides a mechanism for modifying and querying information that resides in a directory information tree (DIT).

  • A directory information tree typically contains a broad range of the information about different types of network objects including users, printers, applications, and other network resources.

  • LDAP is described through four basic models: Information, Naming,Security, and Functional.

  • The combination of these models introduces a nomenclature that describes their attributes and entries, and provides methods to query and manipulate their values.

  • The structure of an LDAP directory tree

    LDAP directory servers store their data hierarchically and if you've seen the top-down representations of DNS trees or UNIX file directories, an LDAP directory structure will be familiar ground. As with DNS host names, an LDAP directory record's Distinguished Name (DN for short) is read from the individual entry, backwards through the tree, up to the top level. More on this point later.

    Why break things up into a hierarchy? There are a number of reasons. Here are a few possible scenario:

    • You may wish to push all your US-based customer contact information to an LDAP server in the Seattle office (which is devoted to sales) and you probably don't need to push the company's asset management information there.

    • You may wish to grant permissions to a group of individuals based on directory structure. In the example listed below, the company's asset management team might need full access to the asset-mgmt section and not to other areas.

    • Combined with replication, you can tailor the layout of your directory structure to minimize WAN bandwidth utilization and your sales office in Seattle might need up-to-the minute updates for US sales contacts, but only hourly updates for European sales information.

    Advantages of Using LDAP

    With LDAP ACIs, you can do things like:

    • Grant users the ability to change their home address and home phone number, while restricting them to read-only access for other data types (such as job title or manager's login).

    • Grant anyone in the group "HR-admins" the ability to modify any user's information for the following fields: manager, job title, employee ID number, department name, and department number and there would be no write permission to other fields.

    • Deny read access to anyone attempting to query LDAP for a user's password, while still allowing a user to change her or his own password.

    • Grant managers read-only permission for the home phone numbers of their direct reports, while denying this privilege to the anyone else.

    • Grant anyone in the group "host-admins" to create,edit, and delete all aspects of host information stored in LDAP.

    • Via a Web page, allow people in "foobar-sales" to selectively grant or deny themselves read access to subsets of the customer contact database and this would, in turn, allow these individuals to download the customer contact information to their local laptops or to a PDA. (This will be most useful if your sales force automation tool is LDAP-aware.)

    • Via a Web page,allow any group owner to remove or add any entries from groups they own. For example, this would allow sales managers to grant or remove access for salespeople to modify Web pages. This would allow owners of mail aliases to add and remove users without having to contact IT and mailing lists designated as "public" could allow users to add or remove themselves (but only themselves) to or from those mail aliases. Restrictions can also be based on hostname or IP address. For example, fields can be made readable only if user's IP address begins with 192.168.200.*, or if the user's reverse DNS hostname maps to *

    Be the first one to comment on this page.

      TCP/IP Tutorial eBooks

    No eBooks on TCP/IP could be found as of now.

     TCP/IP Tutorial FAQs
    More Links » »
     TCP/IP Tutorial Interview Questions
    More Links » »
     TCP/IP Tutorial Articles

    No TCP/IP Articles could be found as of now.

     TCP/IP Tutorial News

    No News on TCP/IP could be found as of now.

     TCP/IP Tutorial Jobs

    No TCP/IP Articles could be found as of now.

    Share And Enjoy:These icons link to social bookmarking sites where readers can share and discover new web pages.
    • blinkbits
    • BlinkList
    • blogmarks
    • co.mments
    • connotea
    • digg
    • Fark
    • feedmelinks
    • Furl
    • LinkaGoGo
    • Ma.gnolia
    • NewsVine
    • Netvouz
    • RawSugar
    • Reddit
    • scuttle
    • Shadows
    • Simpy
    • Smarking
    • Spurl
    • TailRank
    • Wists
    • YahooMyWeb

    Previoushome Next

    Keywords: SNMP and LDAP protocols, osi model protocols, snmp rfc, snmp port, cisco protocols, network protocols, osi protocols, networking protocols, ethernet protocols, udp snmp, wan protocols, router protocols

    HTML Quizzes
    HTML Quiz
    XHTML Quiz
    CSS Quiz
    TCP/IP Quiz
    CSS 1.0 Quiz
    CSS 2.0 Quiz
    HLML Quiz
    XML Quizzes
    XML Quiz
    XSL Quiz
    XSLT Quiz
    DTD Quiz
    Schema Quiz
    XForms Quiz
    XSL-FO Quiz
    XML DOM Quiz
    XLink Quiz
    XQuery Quiz
    XPath Quiz
    XPointer Quiz
    RDF Quiz
    SOAP Quiz
    WSDL Quiz
    RSS Quiz
    WAP Quiz
    Web Services Quiz
    Browser Scripting Quizzes
    JavaScript Quiz
    VBScript Quiz
    DHTML Quiz
    HTML DOM Quiz
    WMLScript Quiz
    E4X Quiz
    Server Scripting Quizzes
    ASP Quiz
    PERL Quiz
    SQL Quiz
    ADO Quiz
    CVS Quiz
    Python Quiz
    Apple Script Quiz
    PL/SQL Quiz
    SQL Server Quiz
    PHP Quiz
    .NET (dotnet) Quizzes
    Microsoft.Net Quiz
    ASP.Net Quiz
    .Net Mobile Quiz
    C# : C Sharp Quiz
    ADO.NET Quiz
    VB.NET Quiz
    VC++ Quiz
    Multimedia Quizzes
    SVG Quiz
    Flash Quiz
    Media Quiz
    SMIL Quiz
    Photoshop Quiz
    Gimp Quiz
    Matlab Quiz
    Gnuplot Programming Quiz
    GIF Animation Quiz
    Scientific Visualization Quiz
    Graphics Quiz
    Web Building Quizzes
    Web Browsers Quiz
    Web Hosting Quiz
    W3C Quiz
    Web Building Quiz
    Web Quality Quiz
    Web Semantic Quiz
    Web Careers Quiz
    Weblogic Quiz
    SEO Quiz
    Web Site Hosting Quiz
    Domain Name Quiz
    Java Quizzes
    Java Quiz
    JSP Quiz
    Servlets Quiz
    Struts Quiz
    EJB Quiz
    JMS Quiz
    JMX Quiz
    Eclipse Quiz
    J2ME Quiz
    JBOSS Quiz
    Programming Langauges Quizzes
    C Quiz
    C++ Quiz
    Visual Basic Quiz
    Data Structures Using C Quiz
    Cobol Quiz
    Assembly Language Quiz
    Mainframe Quiz
    Forth Programming Quiz
    Lisp Programming Quiz
    Pascal Quiz
    Delphi Quiz
    Fortran Quiz
    OOPs Quiz
    Data Warehousing Quiz
    CGI Programming Quiz
    Emacs Quiz
    Gnome Quiz
    ILU Quiz
    Soft Skills Quizzes
    Communication Skills Quiz
    Time Management Quiz
    Project Management Quiz
    Team Work Quiz
    Leadership Skills Quiz
    Corporate Communication Quiz
    Negotiation Skills Quiz
    Database Quizzes
    Oracle Quiz
    MySQL Quiz
    Operating System Quizzes
    BSD Quiz
    Symbian Quiz
    Unix Quiz
    Internet Quiz
    IP-Masquerading Quiz
    IPC Quiz
    MIDI Quiz
    Software Testing Quizzes
    Testing Quiz
    Firewalls Quiz
    SAP Module Quizzes
    ERP Quiz
    ABAP Quiz
    Business Warehousing Quiz
    SAP Basis Quiz
    Material Management Quiz
    Sales & Distribution Quiz
    Human Resource Quiz
    Netweaver Quiz
    Customer Relationship Management Quiz
    Production and Planning Quiz
    Networking Programming Quizzes
    Corba Quiz
    Networking Quiz
    Microsoft Office Quizzes
    Microsoft Word Quiz
    Microsoft Outlook Quiz
    Microsoft PowerPoint Quiz
    Microsoft Publisher Quiz
    Microsoft Excel Quiz
    Microsoft Front Page Quiz
    Microsoft InfoPath Quiz
    Microsoft Access Quiz
    Accounting Quizzes
    Financial Accounting Quiz
    Managerial Accounting Quiz
    Testimonials | Contact Us | Link to Us | Site Map
    Copyright ? 2008. Academic All rights reserved Privacy Policies | About Us
    Our Portals : Academic Tutorials | Best eBooksworld | Beyond Stats | City Details | Interview Questions | Discussions World | Excellent Mobiles | Free Bangalore | Give Me The Code | Gog Logo | Indian Free Ads | Jobs Assist | New Interview Questions | One Stop FAQs | One Stop GATE | One Stop GRE | One Stop IAS | One Stop MBA | One Stop SAP | One Stop Testing | Webhosting in India | Dedicated Server in India | Sirf Dosti | Source Codes World | Tasty Food | Tech Archive | Testing Interview Questions | Tests World | The Galz | Top Masala | Vyom | Vyom eBooks | Vyom International | Vyom Links | Vyoms | Vyom World | Important Websites
    Copyright ? 2003-2022 Vyom Technosoft Pvt. Ltd., All Rights Reserved.