snmp | 易学教程

Strange SNMP shifting operation

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问题 The following is from the book C# Network Programmingm by Richard Blum: public byte[] get(string request, string host, string community, string_ mibstring) { byte[] packet = new byte[1024]; byte[] mib = new byte[1024]; int snmplen; int comlen = community.Length; string[] mibvals = mibstring.Split('.'); int miblen = mibvals.Length; int cnt = 0, temp, i; int orgmiblen = miblen; int pos = 0; // Convert the string MIB into a byte array of integer values // Unfortunately, values over 128 require

How to set BITS data type in SNMPSET command?

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问题 the MIB OID object have data type 'Bits': object_OID Composed Type: Bits Base Type: BITS Access: read-write Kind: Scalar SMI Type: OBJECT-TYPE Value List: doc (0) emta (1) cpe (2) From MIB description, default is DEFVAL { '00'h }. I want set value 2 (cpe). I tried to set the value with command snmpset -v2c -c public 192.168.100.1 [object_OID] b 2 but got Error in packet. Reason: wrongValue (The set value is illegal or unsupported in some way) tried also snmpset -v2c -c public 192.168.100.1

轻量级java snmp设备网管软件开发技术

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【推荐】2019 Java 开发者跳槽指南.pdf(吐血整理) >>> Java技术，在网络管理系统中的应用已经比较普遍。网管软件的分类有很多种，有侧重于业务应用的，有侧重于管理设备的，有侧重于网络的，有侧重于桌面管理的，每种网管软件虽然外在的具体表现形式都不同，但其实内部的技术都大同小异。这其中的设备网管软件就是一个最典型的技术代表，一个全面的设备网管软件基本上要包含网络拓扑图、设备配置、故障管理、性能管理、安全管理、业务管理，也就是FCAPS 这几大块功能。一、技术架构的变迁在网管软件最早的年代，基本上都是从电信管理网的那一套发展起来的，按TMN规范定义的模型来处理，像什么Q接口、F接口、X接口、CORBA、NMS/EMS、FCAPS功能划分，都是这种模型的代表。这种模型对于大型的电信网络来说是必须的，可是对于企业级别的设备网管软件来说，就显得过于笨重，花费的成本是无法接受的。于是对于设备网管软件的架构，逐步向实用化、工程化发展，也就是轻量级技术的发展。轻量级的技术，沿用了FCAPS的功能模型，也是用户关心的问题。而在内部技术上，突破了TMN的种种限制，好的就借用，不好的就抛弃。在这种轻量级技术的影响下，根据用户的需求，灵活选择JAVA技术、数据库技术、SNMP协议，就是这一技术的代表。二、轻量级技术架构选择C/S，还是B/S？这是首选问题。C

SNMP免费网管系统-SugarNMSTool

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【推荐】2019 Java 开发者跳槽指南.pdf(吐血整理) >>> 　　随着计算机技术、网络通讯技术及信息化建设的不断深入发展，企业数据中心机房计算机设备及其配套的环境设备数量与日俱增，机房已经成为众多企业数据运转的重要枢纽。安全、高效、可运营的数据中心，以及其精细化管理成为越来越多企业关注的焦点。引入一套全功能、高智能的运维系统，将机房基础环境、网络环境、服务器设备硬件、系统和应用软件、业务系统、资产、人员等环节集中整合到统一的管理界面中，为遍及全企业的it设备提供随时随地的全面高密度监控、预警管理、自动管控、资产管理、配置管理、事件管理、变更管理等。免费的网管系统- SugarNMSTool 　　SugarNMSTool是“北京智和信通技术有限公司”开发的图形化SNMP工具，可以免费使用。工具只有3M大小左右，便于携带，免安装，无数据库，可在 Windows、Linux、Unix 系统上快速运行。工具由大型SugarNMS智和网管平台的精华功能精简而成。SugarNMSTool是网管员、SNMP设备开发调试、SNMP诊断的日常必备工具。产品网站： www.zhtelecom.com SugarNMSTool的功能 1.设备和链路自动发现可以按IP起始范围、网络段范围、路由跳转搜索、IP漫游发现方式等，通过SNMP和Ping协议发现设备，并识别设备的基本类型。

SNMP基础配置

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【推荐】2019 Java 开发者跳槽指南.pdf(吐血整理) >>> [Huawei]snmp-agent 开启agent服务 [Huawei]display snmp-agent sys-info 查看SNMP信息 [Huawei]snmp-agent sys-info version v3 修改snmp版本为v3 配置snmp管理权限配置基本acl [Huawei]acl 2000 [Huawei-acl-basic-2000]rule 5 permit source 10.1.1.2 0.0.0.255 [Huawei-acl-basic-2000]rule 10 deny source 10.1.1.1 0.0.0.255 配置用户名为wfc，用户组为root，指定使用acl 2000 [Huawei]snmp-agent usm-user v3 wfc root acl 2000 查看SNMPv3的用户信息配置向snmp agent 输出trap信息 [Huawei]snmp-agent target-host trap-hostname admin address 10.1.1.2 udp-port 9991 trap-paramsname welcome 开启设备的告警开关 [Huawei]snmp-agent trap enable Info: All

How to add row in a MIB table with snmpset?

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问题 I changed recently my custom MIB file to include tables and not only scalars, it validates, I can create sub-agent etc. but if I try to read it, it says no entries: snmptable -v1 -c public hostname:10161 myMibName::myTable myMibName::myTable: No entries Well, I didn't add any default/sample rows to that table in my agent code. If I try to set some values of the table with snmpset similar to how I did it on scalars, it always fails so table requires its own syntax. How can I add a row to a

Difference between snmpd and net-snmp

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问题 I am new to SNMP. As far as I know snmpd is a Linux daemon for SNMP which acts as SNMP agent. We can install it from the package snmpd. Now net-snmp also provides a SNMP agent. Does net-snmp provide snmpd daemon as its agent, if so then what is the use in installing net-snmp if one already has installed snmpd (provided one needs the SNMP agent only)? 回答1: The net-snmp suite comes in 3 Linux packages. net-snmp package is the one which has the snmpd component mentioned in question. The 3 Linux

how to decode the result of listenning to port 162 (Snmp Trap)?

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问题 I want to get the snmp trap by using my own traplistener. In fact, I used a code found in internet I added some modifications and now it is working. I can listen through the port 162. #include "stdio.h" #include "winsock2.h" #pragma comment(lib, "ws2_32.lib") #define SNMP_TRAP_PORT 162 #define MAX_MSG 400 static void init(void) { WSADATA wsa; int err = WSAStartup(MAKEWORD(2, 2), &wsa); if(err < 0) { puts("WSAStartup failed !"); exit(EXIT_FAILURE); } } static void end(void) { WSACleanup(); }

Reading SNMP Object index of type IPAddress

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问题 In a simple SNMP table like mib-2.interfaces.ifTable , ifIndex is the index for the table, so you read ifIndex .1 (i.e. read value from direct child nodes of ifIndex ) to get the index for the first row of the table. Simple enough. But it's not as obvious with something like mib-2.ip.ipRouteTable . In that case ipRouteIfIndex is the index column. It's defined as INTEGER just like ifIndex was. However, you can't read the direct child nodes (i.e. ifIndex .0 is a direct child), but instead need

how to load and walk a custom mib in pysnmp?

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问题 I'm new to SNMP/pysnmp and I'm trying to implement an agent that uses a custom MIB. I'm looking at the following example on the pysnmp site, but I can't seem to get it to work. Here are the steps I'm taking: convert my MIB file to a pysnmp module using build-pysnmp-mib (this succeeds without errors) set MIB source and load the MIB module using MibBuilder() use the example referenced above to set up the agent (only thing I added is the mibBuilder) use net-snmp's snmpwalk to view the loaded MIB

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