Basic intro to Simple Network Management Protocol (SNMP)
Understanding the basic of Simple Network Management Protocol (SNMP) is essential for network manager or engineer who are involved with the management of network equipment.
The protocol is defined in RFC (Request For Comments) by IETF (Internet Engineering Task Force). It is widely used for monitoring the health and welfare of network equipment like routers, switches, servers, workstations, printers and more. UDP port 161 and 162 are used in SNMP. UDP port 161 for sending and receiving requests, and port 162 for receiving traps from managed devices.
SNMP is based on the manager/agent model consisting of an SNMP manager, an SNMP agent, a database of management information, managed SNMP devices and the network protocol.
A SNMP managed device is a network node that implements an SNMP interface that allows unidirectional (read-only) or bidirectional access to node-specific information with Network Management System (NMS). Example of managed device includes switches, routers, server, printer or copier machines.
A SNMP agent is a network-management software module that resides on a managed device. An agent has local knowledge of management information and translates that information to or from an SNMP specific form.
A SNMP manager or NMS have the task of monitoring or managing a group of managed devices. NMSs provide the bulk of the processing and memory resources required for network management. One or more NMSs may exist on any managed network.
The local management information on the managed device are defined as variables. The variables accessible via SNMP are organized in hierarchies. These hierarchies, and other metadata are described by Management Information Bases (MIBs).
The protocol is defined in RFC (Request For Comments) by IETF (Internet Engineering Task Force). It is widely used for monitoring the health and welfare of network equipment like routers, switches, servers, workstations, printers and more. UDP port 161 and 162 are used in SNMP. UDP port 161 for sending and receiving requests, and port 162 for receiving traps from managed devices.
SNMP is based on the manager/agent model consisting of an SNMP manager, an SNMP agent, a database of management information, managed SNMP devices and the network protocol.
A SNMP managed device is a network node that implements an SNMP interface that allows unidirectional (read-only) or bidirectional access to node-specific information with Network Management System (NMS). Example of managed device includes switches, routers, server, printer or copier machines.
A SNMP agent is a network-management software module that resides on a managed device. An agent has local knowledge of management information and translates that information to or from an SNMP specific form.
A SNMP manager or NMS have the task of monitoring or managing a group of managed devices. NMSs provide the bulk of the processing and memory resources required for network management. One or more NMSs may exist on any managed network.
The local management information on the managed device are defined as variables. The variables accessible via SNMP are organized in hierarchies. These hierarchies, and other metadata are described by Management Information Bases (MIBs).
Comments
Post a Comment