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ME60 V800R010C10SPC500 Feature Description - System Management 01

This is ME60 V800R010C10SPC500 Feature Description - System Management
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Huawei uses machine translation combined with human proofreading to translate this document to different languages in order to help you better understand the content of this document. Note: Even the most advanced machine translation cannot match the quality of professional translators. Huawei shall not bear any responsibility for translation accuracy and it is recommended that you refer to the English document (a link for which has been provided).
SNMPv2c Principles

SNMPv2c Principles

SNMPv2 has been released as a recommended Internet standard.

Simplicity is the main reason for the success of SNMP. On a large and complicated network with devices from multiple vendors, a management protocol is required to provide specific functions to simplify management. However, to make the protocol simple, SNMP:

  • Does not provide the batch access mechanism and has low access efficiency of bulk data.

  • Only is able to run on TCP/IP networks.

  • Does not provide a communication mechanism for managers and is therefore suitable for only centralized management, not distributed management.

  • Is suitable for monitoring network devices, not a network.

In 1996, the Internet Engineering Task Force (IETF) issued a series of SNMP-associated standards. These documents defined SNMPv2c and abandoned the security standard in SNMPv2.

SNMPv2c enhances the following aspects of SNMPv1:

  • Structure of management information (SMI)

  • Communication between workstations

  • Protocol control

SNMPv2c Security

SNMPv2c abandons SNMPv2 security improvements and inherits the message mechanism and community concepts in SNMPv1.

New PDU Types in SNMPv2c

  • Get-Bulk PDUs: A Get-Bulk PDU is generated on the workstation. The Get-Bulk operation (transmission of Get-Bulk PDUs) is implemented based on Get-Next operations. The Get-Bulk operation enables the workstation to query managed object group information. One Get-Bulk operation equals several consecutive Get-Next operations. You can set the recycle times for a Get-Bulk PDU on the workstation. The recycle times equal the times for performing Get-Next operations during a one-time packet exchange on the host.

  • Inform-Request PDUs: An Inform-Request PDU is generated on the agent. The Inform-Request operation (transmission of Inform-Request PDUs) provides a guarantee for the trap mechanism. After the agent sends an Inform-Request PDU, the workstation should return an acknowledge message to notify the agent of successful receipt of the Inform-Request PDU. If the acknowledge message is not returned within a specified period, the Inform-Request PDU is retransmitted until the number of retransmission times exceeds the threshold.

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Updated: 2019-01-04

Document ID: EDOC1100059466

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