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Device Monitoting and Management, image, image, image, image - Coggle…

- - - - SNMP manager
      - SNMP agents (managed node)
      - Management Information Base (MIB)
  - - - There are two primary SNMP manager requests:
      - get request - Used by the NMS to query the device for data.
      - set request - Used by the NMS to change configuration variables in the agent device. A set request can also initiate actions within a device. For example, a set request can cause a router to reboot, send a configuration file, or receive a configuration file.
  - - - SNMPv1 - This is the Simple Network Management Protocol, a Full Internet Standard, that is defined in RFC 1157.
      - SNMPv2c - This is defined in RFCs 1901 to 1908. It uses a community-string-based Administrative Framework.
      - SNMPv3 - This is an interoperable standards-based protocol originally defined in RFCs 2273 to 2275. It provides secure access to devices by authenticating and encrypting packets over the network. It includes these security features: message integrity to ensure that a packet was not tampered with in transit, authentication to determine that the message is from a valid source, and encryption to prevent the contents of a message from being read by an unauthorized source.