Hi Malaka, We are using snmp4j[1] library to implement the connector.
SNMP Communication: [image: Inline image 1] Let see how SNMPSet operation works, The set operation is used to change[2] the value of a managed object or to create a new row in a table. Objects that are defined in the MIB as read-write or write-only can be altered or created. The Manager sends the SET request to Agent and Agent will receive the request and will respond with a GetResponse message indicating the change has been made or an error indication as to why the change cannot be made. Layered communication: [image: Inline image 2] [1] http://www.snmp4j.org/html/download.html [2] https://en.wikipedia.org/wiki/Simple_Network_Management_Protocol#Overview_and_basic_concepts Vivekananthan Sivanayagam Associate Software Engineer | WSO2 E:[email protected] M:+94752786138 On Tue, Mar 7, 2017 at 8:55 AM, Malaka Silva <[email protected]> wrote: > Hi Vivekananthan, > > I guess here ESB acts as the SNMP Manager? Also can you explain how the > communications happens, protocol details, are you planning to use any libs > etc, > > Perhaps a flow diagram will help. > > On Mon, Mar 6, 2017 at 10:01 PM, Vivekananthan Sivanayagam < > [email protected]> wrote: > >> >> >> H >> >> i All, >> >> Currently, I am implementing the SNMP connector which used to monitor and >> configure the network components such as servers, routers, switches or >> printers through the WSO2 ESB and supports SNMP Version 2. >> >> *About SNMP:* >> >> Simple Network Management Protocol (SNMP) is an Internet-standard >> protocol for managing devices on IP networks. Using SNMP, the Network >> operators can be able to manage their network elements, identify the >> problem and can configure the remote system. >> >> Let us take a simple example to understand SNMP, consider a Network with >> four printers, and we need to shut down the Printer 1(P1), using a >> management protocol like SNMP we can easily figure out the right device and >> do shut down. For that, we can succeed with SNMPSet operation which is used >> to set/write values in the Managed Device. Basically, it is used to >> configure Network Elements. >> >> There are two major things we need to get to know when talking about SNMP. >> >> *SNMP Manager:* A manager or management system is a separate entity >> that is responsible for communicating with the SNMP agent implemented >> network devices. >> >> *SNMP Agent:* The agent is a program that is packaged within the >> network element. Enabling the agent allows it to collect the management >> information database from the device locally and makes it available to the >> SNMP manager. >> >> *Note*: If we assign the SNMP Manager to write permission for the SNMP >> Agent, the SNMP Manager can also send a configuration request to the Agent >> (using a Set message) to change a local parameter. >> >> *Understanding the Management Information Base (MIB)* >> >> When an SNMPManager requests information from an SNMPAgent, the SNMP >> Agent retrieves the current value of the requested information from the >> Management Information Base (MIB). The MIB defines the managed objects that >> an SNMP manager monitors (or sometimes configures) on an SNMP agent. >> >> *SNMP Connector Operation:* >> >> snmpGet: 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. >> SnmpGetBulk: The GETBULK operation is used to retrieve voluminous data >> from large MIB table. >> snmpGetNext : >> >> The >> GET NEXT operation retrieves the value of the next OID in the MIB tree. >> snmpSet: This operation is used by the managers to modify or assign the >> value of the Managed device. >> >> >> Thanks, >> Vivek. >> >> Vivekananthan Sivanayagam >> Associate Software Engineer | WSO2 >> E:[email protected] >> M:+94752786138 <075%20278%206138> >> > > > > -- > > Best Regards, > > Malaka Silva > Associate Director / Architect > M: +94 777 219 791 <+94%2077%20721%209791> > Tel : 94 11 214 5345 > Fax :94 11 2145300 > Skype : malaka.sampath.silva > LinkedIn : http://www.linkedin.com/pub/malaka-silva/6/33/77 > Blog : http://mrmalakasilva.blogspot.com/ > > WSO2, Inc. > lean . enterprise . middleware > https://wso2.com/signature > http://www.wso2.com/about/team/malaka-silva/ > <http://wso2.com/about/team/malaka-silva/> > https://store.wso2.com/store/ > > Don't make Trees rare, we should keep them with care >
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