tomorro的博客

第 1 章 net-snmp安装及配置 ...................................................................................................1-1 1.1 安装.................................................................................................................................... 1-1 1.2 设置net-snmp自启动.......................................................................................................... 1-3 1.3 设置环境变量 ..................................................................................................................... 1-3 第 2 章 net-snmp测试..............................................................................................................2-3 2.1 本地通过localhost测试....................................................................................................... 2-3 2.2 本地通过IP测试.................................................................................................................. 2-4 2.3 远程通过IP测试.................................................................................................................. 2-5 第 3 章 snmpd.conf详解 ..........................................................................................................3-6 3.1 通道控制配置 ..................................................................................................................... 3-7 3.1.1 定义安全体名称....................................................................................................... 3-7 3.1.2 定义安全组 .............................................................................................................. 3-7 3.1.3 定义视图.................................................................................................................. 3-8 3.1.4 向安全组授权相应的视图......................................................................................... 3-8 3.2 系统联系人信息.................................................................................................................. 3-9 3.3 进程检查........................................................................................................................... 3-10 3.4 可执行脚本....................................................................................................................... 3-11 3.5 磁盘检查........................................................................................................................... 3-12 3.6 负载均衡检查 ................................................................................................................... 3-13 3.7 可扩展部分....................................................................................................................... 3-14 3.8 通过控制........................................................................................................................... 3-15 3.9 其它.................................................................................................................................. 3-16 第 4 章 net-snmp指令............................................................................................................4-16 4.1 snmpget ........................................................................................................................... 4-16 4.2 snmpwalk ......................................................................................................................... 4-16 4.3 snmpconf ......................................................................................................................... 4-16 4.4 snmpd .............................................................................................................................. 4-17 4.5 snmpgetnext .................................................................................................................... 4-17 4.6 snmpset ........................................................................................................................... 4-17 4.7 snmpbulkget..................................................................................................................... 4-17 4.8 snmptrap .......................................................................................................................... 4-17 4.9 snmptrapd ........................................................................................................................ 4-17 4.10 snmpinform .................................................................................................................... 4-17 4.11 snmptable ...................................................................................................................... 4-17 ii NET-SNMP 安装配置手册 4.12 snmpstatus..................................................................................................................... 4-18 4.13 snmpbulkwalk ................................................................................................................ 4-18 4.14 snmpdelta ...................................................................................................................... 4-18 4.15 snmptest ........................................................................................................................ 4-18 4.16 snmptranslate ................................................................................................................ 4-18 4.17 snmpusm ....................................................................................................................... 4-18 4.18 snmpvacm...................................................................................................................... 4-18 4.19 snmpdf ........................................................................................................................... 4-18 第 5 章 JAVA开发..................................................................................................................5-18 5.1 NET-SNMP采集示例程序（Java）.................................................................................. 5-18 5.2 NET-SNMP主动发送示例程序（Java）.......................................................................... 5-20 5.3 运行结果........................................................................................................................... 5-21 第 6 章 Linux常用OID............................................................................................................6-22 6.1 CPU ................................................................................................................................. 6-22 6.2 内存.................................................................................................................................. 6-22 6.3 磁盘.................................................................................................................................. 6-23 6.4 示例.................................................................................................................................. 6-23 第 7 章 snmpd.conf示例配置 .................................................................................................7-23

版权归原作者所有。 提出一种在多出口校园网环境下，如何解决出口瓶颈、流量负载均衡和对外设备访问的设计方案，方案基于HSRP、IP SLAs协议配合策略路由、地址翻译及智能DNS技术，充分发挥了CERNET和本地IsP的网络资源优势，实现了链路故障和拥塞时自动切换，提高了访问速度和链路的使用效率。

quagga-0.99.23源码、官方原文说明

介绍并分析了传统的 LSB 信息隐藏算法原理，详细阐述了图像置乱技术的原理和一种传统的混沌图像 置乱方法。在此基础上，提出了一种新的图像信息隐藏算法：基于图像向量索引奇偶性进行信息隐藏的算法。 试验结果及分析结果表明，该算法实现简单，有很好的视觉掩蔽性和较高的信息隐藏容量，并提高了信息隐藏 的安全性。