EPON network management system data transmission method based on SNMP protocol

Abstract

The invention provides an EPON network management system data transmission method based on an SNMP protocol. The method comprises the following steps: organizing attributes into different forms according to classification, if the length of a form exceeds an SNMP message payload space agreement maximum value, carrying out compression processing on the form, and if the compressed form length still exceeds the agreement maximum value, carrying out fragment processing on the compressed form, otherwise, directly entering into a subsequent step; binding the form to each corresponding management information base variable, if the form is not subjected to the fragment processing, directly assembling the form into an SNMP message, and if the form is subjected to the fragment processing, assembling each fragmented sub-form into a single SNMP message; finally carrying out bidirectional transmission of the assembled SNMP message between a network management server and a network management agent terminal of an optical line terminal. According to the invention, SNMP message interaction times between the SNMP network management server terminal and the OLT Agent terminal can be reduced, and traffic load between networks can be reduced.

Description

technical field [0001] The invention belongs to the data transmission technology between the SNMP (Simple Network Management Protocol) network management server and the managed OLT (Optical Line Terminal) equipment SNMP Agent (network management agent) in the field of EPON (Ethernet Passive Optical Network), and particularly relates to a A method for efficiently transmitting a large amount of data through the SNMP protocol between the EPON system SNMP network management server and the OLT Agent. Background technique [0002] Currently, the SNMP protocol is widely used in the EPON network management system. The following introduces the characteristics of the SNMP protocol and the EPON network management system respectively. [0003] 1. Features of existing SNMP messages and mechanisms: [0004] The current SNMP protocol has flaws. When a large amount of information is transmitted through the SNMP protocol, the efficiency of data transmission is low, occupying the bandwidth...

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Problems solved by technology

However, in most cases, only a small number of variables are bound to the SNMP message, and the payload space of the message is not fully utilized.

[0008] (3) Even if a single SNMP message is bound with multiple variables and reaches the full length of the message payload space, the OID (object identifier) ​​field of each variable in the message will occupy space, and the BER (Basic Encoding Rules) encoding space utilization rate is low, and the space occupied by variable information in a single message will not exceed 50%.

[0009] (4) The SNMP protocol adopts a one-response-one-response interaction mode, and cannot directly DMA (direct storage access), and both sides of an interaction need to send a message each, which wastes bandwidth and increases network busyness.

[0015] 2. The managed network topology may change at any time:

[0017] The characteristics of the above-mentioned SNMP protocol and the network management of the EPON OLT system show that for the SNMP network management of the EPON system, the inherent defects of the traditional SNMP protocol are amplified more obviously in the EPON system, which seriously affects the performance of the management network and the response performance of the network management terminal. Therefore, in the EPON system, it is very necessary to transform the SNMP protocol in the aspect of "transmitting large amounts of data efficiently".

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