Questions tagged [snmp]

SNMP (Simple Network Management Protocol) is an Internet-standard protocol for monitoring and configuring devices on IP networks.

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How to change Nagios check_snmp configuration to use SNMP v3

I posted this on SuperUser but I realized this question is probably more relevant here. 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 ...
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OID need to match exactly for SNMP to work?

I am trying to monitor a process on a Centos 7 server using SNMP, the monitoring system is Observium my collegue added proc java 10 1 to snmpd.conf and we know it's working on the server side because ...
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Wich Shebang should you use in a shell sript?

Sorry, this is maybe a stupid question, but I am new to shell scripts. I have a file called oem-device-name.sh. I need to execute an external check for Zabbix: https://www.zabbix.com/documentation/5....
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Determining Sensor Instance Associated with an entSensorThresholdNotification Trap

When receiving an entSensorThresholdNotification trap (CISCO-ENTITY-SENSOR-MIB), how does one determine the specific sensor for which the trap is indicating a threshold crossing?
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How to monitor external port 161 on my router?

Port 161 on my (fairly old Ubee UVW3200) router is open. It seems to be a backdoor from the manufacturer. It is open in stealth. Starting Nmap 7.70 ( https://nmap.org ) at 2020-03-14 21:18 CET Nmap ...
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Installing and configuring net-snmp on windows

Hi I am trying to install NET-SNMP on windows server to use it as SNMP agent. I have a remote server runnning a java thread. The thread is polling SNMP information. I installed 5.7.3 NET-SNMP and my ...
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Can you read out the firmware version of Cisco Small Business Switches via SNMP?

I've been trying to get a Network Configuration Manager set up but unfortunately it's having trouble reading out the firmware version and thus, firmware operations aren't possible at the moment. I ...
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Filtering interface results from prometheus snmp-exporter by interface name

I'm collecting interface statistics from some switches using the following configuration: modules: if_mib: walk: - ifTable auth: community: monitor The data returned from the ...
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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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Monitoring service on redhat server by snmp

I have a server dedicated to running syslog-ng and service crash sometimes (I don’t know why for now). I would like to find a way to monitor this service or sending a trap when syslog-ng crashes. ...
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How to configure SNMP v3 properly. (Unknown token: trustCert)

I am trying to configure SNMP v3 using certificates, but client commands like snmpget are not working, with error messages that suggest configuration errors. I am using net-snmp 5.7.1 and I have been ...
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HP system health SNMP branch not available on Linux

I'm running an HP system with CentOS 7. The SNMP info about the HDD health was not available. For example, the check_hp Nagios/Icinga plugin by Guenther Mair reports Compaq/HP Agent Check: no cpq/...
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Discover virtual machine on esxi with snmp

I want to discover all virtual machines directly on ESXi server (not by vcenter) with snmp. I have correctly started snmp service and can through snmpwalk / snmpget tools. I found this oid to get ...
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SNMP: How to find a computers IP and MAC-address? (Debian)

I'm playing around with Net-SNMP and I'm trying to find my computers IP and MAC-address but it's not working. This is the command I'm running: snmpget -v 2c -c public localhost 1.3.6.1.2.1.4 I'm ...
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snmpwalk on a Cisco MIB imported in a Redhat server

I am experimenting with MIB files so forgive me if this sounds crazy. I wish to import a Cisco network device MIB file into a RHEL7 server having net-snmp and then use solarwinds snmpwalk to collect ...
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Set SNMP community name on AWS Linux (centos)

I'm using AWS Linux (which is a Centos variant). I've used SNMP before. I'm trying to change the community name from public to something1234 (for example). I'm using the standard netsnmp package that ...
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How to change to Poller interval in Cacti from 5 to 1 mins?

I have SNMP enabled on my Cisco Routers on AWS for management and monitoring. In fact, I aim to change getting the data from the Routers using SNMP from 5mins as it is shown in the following figure ...
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monitoring keeplived virtual IP with snmp

I am trying to monitor keepalived VIP with snmp. I got keepalived running on two servers. We had the situation that suddenly the VIP was on both servers which was a big problem, since these servers ...
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monitoring keepalived with snmp

I am trying to monitor keepalived with snmp. Here are the relevant part of the config: /etc/snmp/snmp.conf # As the snmp packages come without MIB files due to license reasons, loading # of MIBs is ...
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SNMP missing 1.3.6.1.2.1.25.2.3.1 (Volume mounts)

Since this morning my snmpd does'nt return a result for the 1.3.6.1.2.1.25.2.3.1 tree. This only happens on the Ubuntu 18.04, on 16.04 its still working. # snmpwalk -v1 -c public ubuntu16.04.host 1.3....
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measuring total swap with SNMP when swap is larger than 4TB

We have a system with more than 4TB of swap space. I want to measure it's memory with SNMP (because I'm using MRTG to graph it). SNMP is reporting negative numbers for memTotalSwap. I suspect that ...
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Zabbix macros, how to access hosts by name, and their items or keys

I have a zabbix 4.2 installation. I have it currently monitoring a network device via generic SNMP queries with my supplied OIDs. The data is being ingested just fine, graphs are populating as ...
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translate an snmpwalk without mibs

I want to run snmpwalk without any MIB files and save the output to a .txt file. The .txt file will be a bunch of numbers without any useful information, since I won't reference any MIB files. Is ...
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How to Determine the Correct OID to Use for Monitoring

Is there a correct/better way of determining the correct OID to use for SNMP monitoring? I was able to download the MIB directly from the device, but I am lost on finding the correct OID from the ...
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344 views

How to monitor in Cacti the packet loss of Linux Server (Net SNMP)

I'm testing my network infrastructure where I'm using iPerf and UDP protocol. I'm running Cacti an open-source, web-based network monitoring and graphing. SNMP server is enabled in Linux servers. ...
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456 views

Issue on Installing SNMP to monitor Linux Servers on AWS

I'm trying to install Net-SNMP on my EC2 instances Ubuntu-based in order to monitor the interfaces, CPU and Memory using Cacti. I'm unable to run SNMP after the installation, this is the instructions ...
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Explain SNMP requests on LPD port

I have a client where network staff runs SNMP against all servers. On one server, Windows 2008 R2, we have an application that functions as a LPD to process print requests on port 515. There are ...
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Get resource usage over HP ilo SNMP

I am trying to get info about cpu and memory utilization on HP gen 8 and gen 7 servers but it seems there is no option for this. Is there any known OiD for this matter?
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ESXI 6.7 Dell Poweredege SNMP

Is there a possibility to monitor a DELL R640 via SNMPGET? Installed VMWARE ESXI 6.7 DELL Customized. On my Debian Machine snmpwalk -O fn -m ALL -c public -v 2c ipaddress .1.3.6.1.4.1.674 but I ...
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Reverse DNS Not Working on some Email servers

We host our email on an internal server. Recently we have started getting bouce backs from various other servers. Most seem to have the following error: Reason: Remote SMTP Server Returned: 550 ...
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How to use snmp remotly with MRTG

I'm using CentOS 7 as the operating system. I'm trying to setup a client MRTG to fetch several servers informations. I don't want to install a web server on the remote server. Is there some official ...
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Is there any use case for SNMPv3 context for traps

let's say I want to send SNMP v3 trap/inform message to the manager. Usually I use USM SHA authorization with AES encryption. The command looks like: snmpinform -v 3 -e 0x111111111 -u myuser -a SHA -...
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Does my SNMP device just not support snmpbulkget?

I've got a Cyberpower 81002 PDU. It works well. In trying to get data from it using snmpget for multiple OIDs I would sometimes get: Error in packet Reason: (tooBig) Response message would have been ...
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Available Memory SNMP MIB for post-2016 kernel/CentOS 7+?

It looks like the "MemAvailReal" actually only reports free memory, not available memory. Is there a more recent version of this MIB or a different standard MIB which measures available memory? I ...
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snmpd.conf - TImeout with Centos

First of all i want to say i did a lot of researches and i read tons of examples for the last 3 days but i didn't find a solution that's why i am posting here. I would like to monitor services and ...
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get MIB file from a host

How can I get the MIB file from a remote managed HW? The only thing that I know is the ip, port, community. Can I use the net-snmp package? If yes, I'd like to have exact command. Thank you!
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SNMP service crashes on reload - Kernel error

My server has a SNMP service (NET-SNMP) started with systemd. It runs well, except that every 3 days, at 3:00 PM, the service crashes. I notice in the log that there is a reload of the agent. Then it ...
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SNMP trap on Windows service stop

I'm trying to send traps when a Windows service e.g. Windows Update is stopped. In evntwin I tried adding all events with Microsoft-Windows-WindowsUpdateClient origin but stopping/restarting the ...
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SNMP timeout/stuck mid way

I have a proxmox 5.2 machine (4.15.18-8-pve) and snmp installed with default config. when I do a snmpwalk it outputs some information but then hangs. Any future snmpwalk requests don't get any ...
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Using SNMP for detecting filesystem anomalies (read-only, etc.)

Usually when there is a problem, the filesystem mounts itself read-only: [449551.919049] EXT3-fs (dm-2): error: ext3_journal_start_sb: Detected aborted journal [449551.919056] EXT3-fs (dm-2): error: ...
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How to get ethernet bandwidth statistics with check_snmp?

while running check_snmp_int.pl to get interface names i get the answer # ./check_snmp_int.pl -H 56.22.17.43 -2 -C public -p 44200 -v -n zzz Alarm at 15 + 5 SNMP v2c login Filter : zzz OID : 1.3.6....
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Ubuntu versions and using apt-get for SNMP mib downloader

I am running Ubuntu 16.04.5 LTS, which I believe slightly pre-dates a fix to some issues with the SNMP MIBs installed by the snmp-mibs-downloader. I'm trying to understand whether I can use apt-get to ...
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SNMP MIBs on Ubuntu - error in MIBs

I'm concerned that the definitive set of MIB files for Ubuntu seems to have syntactic errors. Am I using the wrong MIBs? I have used sudo apt-get install snmp-mibs-downloader sudo download-...
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How to monitor systemd service with snmp?

So I have a Gunicorn service on my Ubuntu server. First I added proc gunicorn to this file: /etc/snmp/snmpd.conf. But I'm not sure how to get the right values. I've seen this question (How to ...
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simple SNMP trap parsing with PHP

I need to extract a single bit from an SNMP trap, which reports the state of eight digital sensors. The OIDs of the sensors are: ".1.3.6.1.4.1.42505.1.2.1.1.7.x" where x can be 0 to 7. The hex ...
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On machine reboot via SNMP

Is it possible to reboot a windows or a linux machine via SNMP? Most of information I've found is related to the reload of the SNMP service itself, instead of host reboot.
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NET-SNMP in Solaris 11.3 -How configure filesystem full and a process down?

i have configured the community in one Solaris 11.3 System and it works But.. for monitoring filesystems full or an application process down, my question is, how must i add this control in snmp.conf?...
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SNMP MIB design, merits of having a string index

I am designing an SNMPv2 MIB to allow management of a set of resources that come and go over time. Their unique identifier is a string. I will create a table resourceName resourceDescription ...
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CentOS - SNMP timeout: No Response from remote host

Hopefully someone can help me, I've searched this site and none of the answers have proven successful. I've spun up a CentOS VM and installed net-snmp & net-snmp-utils. I am trying to do a ...
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Is there any relation between LDAP and SNMP? Can SNMP exist without LDAP?

I understand that SNMP is a protocol for managing (view/update) system resources information remotely and LDAP is a protocol to access and use directory services information. But is there any ...

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