net-snmp

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

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

问题 I'm trying to use SNMPget on linux to get information regarding devices on my network. I'm able to successfully use snmpget on the linux terminal but now would like to write a script in perl/python and have it do the work for me. SNMPget example snmpgetnext -v 3 -n "" -u USER -a MD5 -A PASSWORD -l authNoPriv 192.168.1.1 sysDescr I'm trying to do the same thing in perl, but I can't seem to find any good documentation on how to do it. What I found on the internet (but this is not SNMP v3): $cat

问题 Linux Net-SNMP agent can be extended using a PEN (private Enterprise Number) on /etc/snmp/snmpd.conf ( man snmpd.conf for details) # from the man page: extend [MIBOID] NAME PROG ARGS extend .1.3.6.1.4.1.32473 2 /tmp/snmp.sh snmp.sh is a simple bash script that will echo the passed argument or current date otherwise with some weird exit codes #!/bin/bash if [ -n "$1" ]; then echo "$1" exit 51 fi /bin/date '+%F %T' exit 37 Running snmpwalk on that OID snmpwalk -c public -v 2c 127.0.0.1 SNMPv2

问题 How can I get the syntax type and read/write access for an OID using NET-SNMP API? I am writing an SNMP tool that reads and sets values on a remote machine using SNMP protocol. Before setting the value, I need to check its type and access permissions (whether it is allowed to write this value on the server or not) from the MIB file. Unfortunately, I could not find any mention regarding how to do this in the Net-SNMP documentation. 回答1: Roughly speaking: oid name[128]; size_t name_length = OID

问题 I am developing a Net-SNMP subagent whose final target will be an ARM board, so I'm using CMake to make it easier to manage building the native and cross-compiled versions. I started testing it on my host platform (x86_64) and it builds and works fine with this CMakeLists.txt file: cmake_minimum_required (VERSION 2.6) project (snmp_agent C) set(snmp_agent_VERSION_MAJOR 1) set(snmp_agent_VERSION_MINOR 0) # Defines path to the net-snmp-config script set(NETSNMPCONFIG "${CMAKE_FIND_ROOT_PATH}

问题 I am working on node red (SNMP). When I deploy, I have the output below: [ { "oid": "1.3.6.1.2.1.10.21.1.2.1.1.2.1.26", "type": 2, "value": 104 , "tstr": "Integer" }, { "oid": "1.3.6.1.2.1.10.21.1.2.1.1.2.2.27", "type": 2, "value": 104 , "tstr": "Integer" }, { "oid": "1.3.6.1.2.1.10.21.1.2.1.1.2.10.28", "type": 2, "value": 1 , "tstr": "Integer" }, { "oid": "1.3.6.1.2.1.10.21.1.2.1.1.2.11.29", "type": 2, "value": 1, "tstr": "Integer" }, { "oid": "1.3.6.1.2.1.10.21.1.2.1.1.2.12.30", "type": 2,

问题 When I want to create a SNMPv3 user on the NMS, there need to input an engine ID which is an identifier string from SNMP Agent server for each user, so I input an casual id. For example: createUser -e "0x80001370017f000101" "mytrapuser1" SHA "user1authpass" AES "user1encypass" authUser log,execute,net mytrapuser1 And I can successfully send the trap from Agent server to NMS using below command: snmptrap -v 3 -a SHA -A user1authpass -x AES -X user1encypass -l authPriv -u mytrapuser1 -e

问题 I'm writing a custom MIB to expose a table over SNMP. There will be one table with set columns, but a variable numbers of rows. Is it possible, with Net-SNMP , to add multiple rows to the table from multiple processes (e.g. process A creates row 1, process B creates row 2, etc...)? I would like to avoid having one "master sub-agent" if possible (other then something that is a part of Net-SNMP , like snmpd / snmptrapd /etc). I would like to use mib2c to help generate code if possible, but I

问题 I am trying to get some scripts working in my snmpd.conf file using pass, however calling snmpget on the OID is returning No Such Instance currently exists at this OID in the snmpd.conf I have pass .1.3.6.1.4.1.13732.100.2.1 /bin/sh /usr/share/snmp/local/terminal and when I call snmpget -c public -v2c 127.0.0.1 .1.3.6.1.4.1.13732.100.2.1.1 I get the no such instance error. Why does the snmpget not seem to find the pass in the conf file and use the script? It is able to find the OID in the MIB