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Home/ Questions/Q 3532
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Shailendra Yadav
Shailendra YadavLevel 50
Asked: October 3, 20212021-10-03T22:59:36+05:30 2021-10-03T22:59:36+05:30

When Using Snmpv1 Or Snmpv2, What Piece Of Information Is Needed To View Information From An Agent?

When Using Snmpv1 Or Snmpv2, What Piece Of Information Is Needed To View Information From An Agent?
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    1. Maryam Khalid Bronze
      2021-12-01T19:58:31+05:30Added an answer on December 1, 2021 at 7:58 pm

      When using SNMPv1 or SNMPv2, what piece of information is needed to view information from an agent?

      • Entity.
      • Community string 
      • MIB.
      • OID.

      Answer: The community string is the piece of information that is needed to view the information from an agent when someone is using the SNMPv1 and SNMPv2.

       What is SNMP?

      SNMP is the simple network management protocol it is based on the response/request format and a standard protocol.it works in a way when the network manager sends the request the response comes from the managed agents in return. The SNMP has the three-basic versions SNMPv1, SNMPv2c, and SNMPv3.

      The base of the protocol is a simple set of operations that gives the authority to modify the state or the condition of SNMP-based devices. Some of the examples are that the SNMP can use to power off the interface of the router and also check the speed of the operating Ethernet. SNMP tells when the switch is heated up and needs to be dislocated from the power.

      Most of the time SNMP is connected with the router management but it can also manage many other devices such as Unix, Windows, printers, modems rags, etc. Before the SNMP the protocol for the router management is the SGMP (simple gateway management protocol). the running devices which allow the retrieval of the SNMP are also managed such as the web servers and database along with the physical devices.

      Now that you know the SNMP let’s take a look at the overview of the different versions of the SNMP in the given section:

      SNMPv1

      SNMPv1 is the very first version of the SNMP the setup of it is easy and require few plain text community.it is open source and the standard protocol but in some areas, it lacks to maintaining the applications. Such as it has 32-bits counters and the security is not so good only the community string is the best method of security in the SNMPv1.the upcoming version has covered these issues only the smaller RTUs support the SNMPv1.

      SNMPv2c

      It is designed in 1993 and is the sub-category of the SNMPv2.the operations like the Get, GetNext, and the set are the same in both SNMPv1 and SNMPv2c .but the feature which is lacking in the previous version is the Inform command .despite the traps which can only be received by the manager the informs have the acknowledgment of the message response. If the manager fails to respond the inform the SMNP agent to resend them. Various other features are improved error handling and SET commands.

      SNMPv3 

      It is the very close version of the SNMP and the feature which makes it unique is its enhanced security. For the management of the security the model which is designed is a User-based Model and for the access control is a view-based access control model.

      SNMPv3 has other 2 forms: authentication and encrypting.

      Authentication: 

      The authentication ensures the traps can be read by the intended recipient. when the response is created a special key is given on the base of EngineID of entity, which is shared among the recipient and also receives the response(message).

      Encrypting:

      The message of SNMP is encrypted by privacy to make sure that unauthorized users can not be able to access it. Privacy is useful when the SNMP response is transferred over the internet.

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