What Is SNMP?
Simple Network Management Protocol (SNMP) is a network protocol that is native to IP networks and compatible with most network devices. SNMP monitoring provides a standardized way for network engineers and admins to gather information about networking equipment, and helps ensure that a company’s network is running smoothly. Many network monitoring tools rely on SNMP to gain visibility into network infrastructure, such as routers, switches, and firewalls.
SNMP was developed in 1988 as a utility to be standardized across all networking equipment. Major network appliance vendors built SNMP support into their devices so network engineers had a uniform way to gather information from their devices, independent of the vendor they purchased their equipment from. Today, few additional protocols have been as widely adopted as SNMP.
Tonmind IP Speaker has not been compatible to SNMP, we will consider to support it in the future.
SNMP Commands
SNMP tools perform many functions that rely on a mix of push and pull communications between network devices and the network management system. At its core set of functions, it can execute read or write commands, such as resetting a password or changing a configuration setting. It can also find how much network bandwidth, CPU and memory are in use. Some SNMP managers can automatically send the administrator an email or text message alert if a predefined threshold is exceeded. The following PDUs, or protocol data units, describe the messaging commands supported by the protocol:
Get Request—A request to retrieve the value of a variable or list of variables.
Set Request—Sent by the SNMP manager to the agent to issue configurations or commands.
GetNext Request—Sent by the SNMP manager to agent to find the values of the next record in the MIB's hierarchy.
GetBulk Request—Sent by the SNMP manager to the agent to obtain large tables of data by performing multiple GetNext Request commands.
SNMP Response—Sent by the agent to the SNMP manager, issued in reply to a
SNMP Trap—Asynchronous trap messages from SNMP agents alert an SNMP manager that a significant event such as an error or failure, has occurred.
SNMP Inform—Confirms receipt of a trap.
Tonmind IP Paging Adapter has not been compatible to SNMP, we will consider to support it in the future.
How Does SNMP Work?
Traffic flows across your network from different sources. SNMP communicates with the whole network and the devices in it. As mentioned earlier, SNMP is preconfigured on devices, and once the protocol is enabled, the devices will store their performance stats. Each network server will have multiple MIB files. The device MIB files are queried to fetch the monitoring data. The working of SNMP revolves around its components, wherein each component contributes management of resources.
SNMP works by sending protocol data units, also known as SNMP GET requests, to network devices that respond to SNMP. All these communications are tracked, and network monitoring tools use them to fetch data from SNMP.
Tonmind SIP PCB has not been compatible to SNMP, we will consider to support it in the future.
