SNMP Terms and Definitions lists common SNMP terms and defines their use on Extreme Networks devices.
SNMP Terms and Definitions
| Term | Definition |
|---|---|
| community | A name string used to authenticate SNMPv1 and v2c users. |
| context | A subset of MIB information to which associated users have access rights. |
| engine ID | A value used by both the SNMPv3 sender and receiver to propagate inform notifications. |
| group | A collection of SNMP users who share the same access privileges. |
| inform | A notification message sent by an SNMPv3 agent to a network management station, a console, or a terminal to indicate the occurrence of a significant event, such as when a port or device goes up or down, when there are authentication failures, and when power supply errors occur. |
| MIB | Management Information Base, a repository for information about device parameters and network data organized in a tree structure. |
| notify profile | Associates target parameters to an SNMP notify filter to determine who should not receive SNMP notifications. This is useful for fine-tuning the amount of SNMP traffic generated. |
| OID | Object Identifier, a unique ID distinguishing each variable in the MIB and is the means by which the SNMP manager and agent specify which managed elements are changed. |
| security level | The permitted level of security within a security model. The three levels of SNMP security are:
|
| security model | An authentication strategy that is set up for an SNMP user and the group in which the user resides. A combination of a security model and a security level determines which security mechanism is employed when handling an SNMP frame. |
| storage type | Specifies whether an SNMP user entry will be stored in volatile or nonvolatile memory. |
| taglist | A list of SNMP notify values that link a target (management station IP) address to specific SNMP notifications. |
| target address | A unique identifier and a specific IP address that will receive SNMP notification messages. |
| target parameters | A named set of security/authentication criteria used to generate a message to a target. |
| trap | A notification message sent by an SNMPv1 or v2c agent to a network management station, a console, or a terminal to indicate the occurrence of a significant event, such as when a port or device goes up or down, when there are authentication failures, and when power supply errors occur. |
| user | A person registered in SNMPv3 to access management information. In v1 and v2c, a user is set with the community name string. |
| USM | User-Based Security Model, the SNMPv3 authentication model which relies on a user name match for access to network management components. |
| VACM | View-based Access Control Model, which determines remote access to SNMP managed objects, allowing subsets of management information to be organized into user views. |
| view | Specifies permission for accessing SNMP MIB objects granted to a particular SNMP user group. View types and associated access rights are:
|
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