1Compare the telephone network and the Internet What are the

1.Compare the telephone network and the Internet. What are the similarities? What are the differences

2.What is the difference between Get-Request and Get-Next-Request. Why in some cases we apply Get-Next-Request instead Get-Request

3.Describe the System Architecture of SNMP Manager and SNMP Agent

Solution

1.Compare the telephone network and the Internet. What are the similarities? What are the differences?

Answer :

1.The telephone network was purely designed for voice communication.

2.The internet was desinged for data Communication.

3.The telephone network is mostly a circuit switche network.This means that a connection must be established      between 2 end points.

4.The Internet is mostly Packet-Switched network.That means that packets can be sent without following an established connection & bandwidth can be shared with other users.

5.These 2 networks are similar in the fact that both are made of interconnections of small network.

6.Both can be make by wires/wireless,both are capable to two way traffic of signals.

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2.What is the difference between Get-Request and Get-Next-Request. Why in some cases we apply Get-Next-Request instead Get-Request

Answer :

1.GET-Request: The GET operation is a request sent by the manager to the managed device. It is       performed to retrieve one or more values from the managed device.

2.Get-Next-Request: This operation is similar to the GET. The significant difference is that the GET NEXT operation retrieves the value of the next OID in the MIB tree..

Why in some cases we apply Get-Next-Request instead Get-Request?

                 Because the SNMP GET operation retrieves one or more values from the managed agent\'s MIB. The GETNEXT operation does the same for the next object in the tree of objects on the managed device. The mandatory values we need to provide are the host name in which the agent resides and the OID that needs to be queried.

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3.Describe the System Architecture of SNMP Manager and SNMP Agent

Answer :

            SNMP uses a distributed architecture of management systems and agents and several related components. Windows Server 2003 provides an SNMP agent that is designed to be capable of interacting with any SNMP manager.

->SNMP management systems and agents

->Management Information Base (MIB)

->SNMP Messages

->SNMP Communities

->The communication process between SNMP managers and agents

The communication between the SNMP manager and SNMP agent in the example proceeds in the following way:

SNMP Manager and Agents

SNMP locates the network management component on one or more computers and locates the managed component on multiple managed devices:

SNMP manager. An SNMP manager, also known as an SNMP management system or a management console, is any computer that sends queries for IP-related information to a managed computer, known as an SNMP agent. In some cases, the SNMP manager can send a request to an SNMP agent to change a configuration value.

->SNMP agent: An SNMP agent is any computer or other network device that monitors and responds to queries from SNMP managers. The agent can also send a trap message to the manager when specified events, such as a system reboot or illegal access, occur.

An SNMP manager can request the following types of information from the SNMP agents that it monitors:

->Network protocol identification and statistics

->Dynamic identification (discovery) of devices attached to the network

->Device performance and usage statistics

->Device error and event messages