基于卫星网络管理的SNMP扩展原语设计

针对卫星网中卫星节点的动态性和管理域动态划分的特点，提出卫星网络动态管理域划分的注册注销机制。地面分管理站向视域内的卫星发送注册广播分组，星上SNMP代理收到广播分组后采用链路延迟测试应答。根据该机制扩展了SNMP的原语，对原语的定义遵循RFC1157规范，可采用BER编码。该设计实现了SNMP协议对基于注册注销机制的动态管理域划分策略的支持。

Design of Extended SNMP Primitive Based on Satellites Network Management

In allusion to the mobility of the satellite network nodes and the characteristic of management domain dynamic partition in the satellite network, this paper proposes the login and logout mechanism of the satellite network dynamic management domain partition. In the mechanism, a ground branch-station sends the packets of login broadcasting to satellites in view. After receiving the packets, the SNMP agents on the satellites adopt link-delay test to respond. According to the mechanism, the SNMP primitives are extended. The definition of primitives, which followes RFC1157 criterion, can be encoded by the BER coding. The policy of the dynamic management domain partition on the basis of the login and logout mechanism, which is supported by the SNMP protocol, is realized by the design of the extended primitives.