Questions tagged [snmp]

Simple Network Management Protocol(SNMP) is an Internet-standard protocol for managing devices on IP networks. SNMP generally operates over UDP.

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How to change Nagios check_snmp configuration to use SNMP v3

I am trying to check uptime via Nagios's check_snmp plugin on a SNMP version 3 enabled UPS. I'm able to do an snmpget call specifying version 3 with the proper credentials and get the proper response ...
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How do Windows 10s CIM and SNMP work together?

I am currently trying to get into SNMP, but it seems that with version 1809 of Windows 10, SNMP is deprecated and it instead uses something called CIM - i read a little about it and i am completely ...
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SNMP: How to monitor devices that do not have static IP adress with Zabbix

I have some equipments in my LAN but the way things are working; I cannot set statics IPs for them, they really need to have DHCP enabled. I am using Zabbix, and for host configuration, the IP ...
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62 views

Windows RAM OID value?

Currently looking for the OID(s) to query for: totalRam freeRam usedRam '1.3.6.1.4.1.2021.4.5.0' isn't giving me what I want, and generally I can't find the correct OIDs. The OIDs are queried ...
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546 views

Monitor RAID volume, check hard disk health

Trying to monitor the RAID volume using SNMP. Is there a command which can parse through the complete RAID volume and output the status of disks in it? If not SNMP, please suggest a better way to ...
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SNMP agent not responding to external connections on ubuntu 16

I'm trying to set up snmp on ubuntu 16, and I can see it is listening on port 161 by using command: $ sudo netstat -nlpu|grep snmp udp 0 0 0.0.0.0:161 0.0.0.0:* ...
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How I check packet loss in wireshark

The identification value for each entry is like below (not a changing number) 0x0000 (0) How can I check if there is packet loss?
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25 views

SNMPGET for Centos system OID

I want to perform snmpget on centos system OID. So, I would like to ask what is SNMP the user and SNMP version I need to use. If it possible please provide syntax. My /etc/snmp/snmpd.conf: http://...
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While setting TIMETICKS, INTEGER or any other datatype except STRING getting NotWritable exception in SNMP MIB

I have set up an SNMP agent running in my Linux machine. I am trying to update an object value whose data type is not string like INTEGER, TIMETICKS etc. For STRING data type I am able to set but for ...
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101 views

How to add correlation/calculation to zabbix snmp data

I have cisco catalyst 6500 switch, I want to get ethernet transmit/receive power in dBm. In order to get the stats in dBm I need to do these calculations. https://community.cisco.com/t5/networking-...
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no dskEntry OIDs via SNMP

My question is about getting disk info from Linux server through SNMP. OS: CentOS Linux release 7.6.1810 (Core) OIDs for disks are: 1.3.6.1.4.1.2021.9.1 But when I'm running C:\Soft\snmpwalk>...
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CentOS - FATAL: Connection to Cacti database failed

I've nearly finished setting up Cacti on a headless VM CentOS server. Apache is up, mysql is up, all requisite php modules are installed. When I browse to the server's IP, I can verify that httpd is ...
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Getting permission denied on snmpwalk

I am trying to probe a raspberry pi for some data using SNMP. Now, this method I am using works on another RPi just fine, but for some reason when running snmpwalk -v2c -c<comm> <addr> &...
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118 views

What are the steps to take to get specific information from SNMP?

I want to query a FortiGate for its CPU usage. Per Fortinet documentation, the variable to use is fgPerCpuHighDetails: $ grep fgPerCpuHighDetails /home/qa/.snmp/mibs/FORTINET-* /home/qa/.snmp/mibs/...
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SNMP on GNS3 circuit

I wanted to access the OID of the devices in my circuit on GNS3. This circuit consists 2 routers and 1 switch and 1 VPC. For that I installed GNS3 locally, and created a circuit with Cisco-2691 router ...
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346 views

SNMP pass script works but snmpget for OID doesn't provide correct result

I wrote a prototype script to start examining the status of a service using SNMP. The script itself, seems to work, as I am using mysql as a test example, but the OID as requested via snmpget returns ...
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64 views

How to implement lwIP+SNMP in LPCxpresso?

I am using lpcxpresso software and done with lpcopen's webserver example . Now I would like to implement SNMP with the existing lwip present in webserver. I have seen the steps to build SNMP agent on ...
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200 views

Which MIB OID uniquely identifies printer devices

Till now, I was using sysObjectID (.1.3.6.1.2.1.1.2.0) to uniquely identify a printer device. However, in case of HP printers I found that, HP models have same sysOID (.1.3.6.1.4.1.11.2.3.9.1), ...
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Request a router to search for a wifi network

My computer is connected to a router by Ethernet and doesn't have wifi. The router has a wifi interface. I would like to find a way to interrogate the router, in a script, to know if a wifi network ...
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snmptrapd problems with snmpv3

I have a problem with the snmptrapd and it's driving me nuts. We have the following scenario: Server A has to send snmpv3 traps to server B. Server B is a zabbix server which has to read them from ...
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hpe switch getMib/walkMib gives result with c string type format specifier

working on a new hpe switch: Aruba-2930-48G-PoEP and I'm trying to get some data from the switch via the snmp protocol but I get results which contains c string format specifiers, I need the switch to ...
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What's the function of SNMP protocol?

The SNMP protocol is an application layer protocol and is based on UDP. We know that there has SNMP protocol on the router, so is there a switch and a PC? What is the specific role of it?
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Munin snmp plugin: how to ignore a counter?

I am monitoring a printer usage via a munin snmp plugin. I configured it by typing sudo munin-node-configure --shell --snmp myprinter.example.com which instructed me to create a symlink to /usr/...
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Ubuntu Variable to output on webpage

I'm at the edge of my technical knowledge and I need your expertise. I want to view the output of a certain command on Linux onto a webpage. I am managing a number of devices which I always monitor ...
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snmptrap V3 with net-snmp not working “usm: no match on engineID”

I am trying to send snmptrap from my centos machine to other centos machine. I am seeing the below in logs, snmptrap V3 with net-snmp not working "usm: no match on engineID" trace: sc_hash(): scapi.c,...
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Installing SNMP in WIndows 10

So, I need to install SNMP in a windows 10 pro computer with no internet access, or any arrangement for a temporary internet access. In windows 10 there is option to add features in the "Programs and ...
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130 views

Creating a service for snmpd.exe on windows server + Cygwin

I need to create a service for the snmp daemon snmpd.exe which is installed on my windows server 2016. I use sc create snmpd binPath= "C:/path/to/snmpd.exe" and then I try to start it with sc start ...
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103 views

snmp-check not sending output via 1> to a .txt file

In Kali, running snmp-check <IP target> -c public 1> OP.txt does NOT place the output in the file but snmp-check <IP target> -c public writes to the terminal. Why is this ...
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949 views

Filtering wireshark traffic for all snmp

What is the correct syntax for a CAPTURE filter to capture ALL SNMP traffic? (Note: SNMP can use both TCP and UDP protocols.
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112 views

snmpwalk v2 unknown token (centos)

I've installed opennms on centos7 but when trying to enable snmp on it I keep getting the unknown token errors. Such as comsec2, group, view, access. The command I'm trying to run is: snmpwalk -v 2c ...
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1k views

Collect MAC-Adresses of connected devices via SNMP

i am working on an script, which collects data from Netgear-switches via SNMP. My problem is, that i am not able to find the OID, which represents the MAC-address of the clients connected to a port. ...
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Why a device is not detected on pci network card?

UPDATE 1 The OS on the server is Windows 10 Enterprise I have a device that is connected directly to a server with an ethernet cable. No other ethernet cables or devices are connected to the server. ...
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How can I get a graphical representation of the traffic going through my switch

I have a small home network with 4 PCs, several tablets and a number of appliances. These all route to the WAN router through a Netgear Managed Switch (GS724Tv4). I have noticed that the network ...
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940 views

How to change the SNMP community name “public” in (ZT230) Zebra printer?

I have an SNMP issue with the community name. The default name is "public". When I tried to change it to anther one, I find that I can walk the SNMP with two name "public" and "loreal" (giving the ...
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net-snmp what's wrong with the OID?

I have requested for a PEN(Private Enterprise Number) and got it. The PEN is 50743. I have a very simple MIB which looks like this: SAMPLE-SNMP-MIB DEFINITIONS ::= BEGIN IMPORTS MODULE-...
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710 views

Net SNMP daemon doesn't start

I had it working perfectly for years but suddenly (I think it's following the debian 8 -> debian 9 upgrade) it stopped working. I have tried several things and ended up purging everything: # apt ...
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Selecting between Zabbix Agent, SNMP and other available protocols in Zabbix NMS

I have started using zabbix 3.2 and currently I am monitoring 10 devices , 8 of which are Snmp based and 2 are Agent based. Currently both type of devices are showing basic data like CPU, Memory etc. ...
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SNMP Set:Timeout, No Response

snmpwalk -v1 -c public $ip enterprises.10642.20.10.10.5.11.3.0; snmpget -v1 -c public $ip enterprises.10642.20.10.10.5.11.4.0; snmpset -v1 -c public $ip enterprises.10642.20.10.10.5.11.4.0 s ...
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1k views

SNMP : Community Name is “public”, how I can change it?

I want to change SNMP community Name in Zebra ZM600 printer from public to private for ex: snmpwalk -v1 -c public "address IP" enterprises.10642.20.10.10.5 when I walk the MIB tree I use public like ...
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91 views

change commuinty name snmp via zpl commande

I want to change the community name snmp for zebra printer via zpl commands the community name snmp is public in default, i tried with ^NN command , but nothing change, this is an example : ^XA ^NN,,...
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44k views

How to get CPU temperature on Windows system using both Snmp and cmd

I am currently working on NMS Zabbix. After some R&D, I am able to get the CPU temperature info on Linux via snmp as well as terminal using LM-SENSORS. However, the same doesn't work for Windows; ...
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51 views

Where are MIBs installed?

I'm a little confused on where MIBs are installed/required for SNMP. Do they need to be on both the end point device AND the monitoring tool? Or just the monitoring tool?
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766 views

Not able to install SNMP on CentOS

I am trying to install SNMP utility on my CentOS. I have Mysql pre-installed on the machine. I am getting following error : yum install net-snmp Loaded plugins: fastestmirror, langpacks Loading ...
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Remote shutdown of a group of linux servers (SNMP/Bonjour/socat?)

I have a group of linux servers on my subnet that I want to be able to remotely shutdown from a master machine. I don't want the non-master machines to have to coordinate with the master in advance, i....
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255 views

How to properly control snmptrapd within a bash script

I am trying to monitor snmp notifications using snmptrapd. It is ran using bash script and I add the '&' at the end of the snmptrapd line (1) to run it in the background. This way I start ...
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Measure download volume from a service provider

I have an internet service provider that uses satellites. I need to measure the actual download volume for specified time periods. My reading on this lead me to believe that SNMP will do this. Thus I ...
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7k views

tcpdump is overlooking some snmp traffic

I am sniffing for SNMP traffic to code a testcase for some network hardware. Currently I start tcpdump like this: tcpdump -i any -nn port snmp I then send some SNMP traffic from the same host: ...
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1answer
574 views

Datacenter traffic reporting with Cacti

I am trying to get a good profile of my data usage so I know what kind of connection speeds I need when placing servers for colocation. I have Cacti installed and connected to 2 servers through snmp ...
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1answer
48 views

Calculating network usage from a server

I am trying to calculate the % network utilization for a server on my network for any snmp traffic, (in or out). I have followed the below steps, can someone point out if I have gone wrong in the ...
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Is the “SNMP Service” unavailable in Windows 10?

Adding the SMTP service to a Windows OS seems quite straightforward in almost all cases: open the Windows Features interface, then check the "Simple Network Management Protocol" option. After ...