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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Snmpd stop working without any changes

I am monitoring multiple server/router with snmp. Everything was working but today I saw that 3 server was not responding anymore via SNMP. The 3 snmp daemon stoped at the same moment (Saturday 6 AM) ...
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Php-fpm service fails to start on solus. Possibly due to snmp module

I am having some trouble to start the php-fpm service on solus OS. It appears that is is maybe related to the snmp module. Here are some info about the error : ~ $ sudo systemctl status php-fpm Mot de ...
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Why Getting Speed With SNMP is not Stabil?

I am trying to get network usage percentage and I check the time and speed between of two octets(before and next). Generally the speed of network of one octet is 1GBit(1.0E9) but sometimes I see that ...
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Why I am Getting Higher than %100 Network Usage From SNMP?

I am using SNMP in Ubuntu 20.04 to get the network usage info and I am using this formula to calculate the network usage: InOctets : The difference between two poll cycles of collecting the snmp which ...
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Switching APC rack PDU via SNMP

How can I switch the outlets of an APC Rack PDU (AP7920) via SNMP (Linux SNMP command tools like snmpget/snmpset) ? I can't find anything about it. I was able to walk it via: snmpwalk -v3 -a MD5 -A ...
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76 views

Is there a generic SNMP OID to get CPU fan speed on a Linux system?

I am trying to get the CPU fan speed of a QNAP NAS through SNMP. Unfortunately there doesn't seem to be a QNAP-specific OID for this, based on the QNAP MIB. Is anyone aware of a generic OID for this ...
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712 views

snmpwalk: Decryption error for APC Rack PDU

I have an APC Rack PDU (AP7920) and have configured: [x] Enable SNMPv3 access Username: switch Authentication Passphrase: test Privacy Passphrase: test Authentication Protocol: (o) MD5 Privacy ...
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best practice for device with custom and standard mibs

We have a device which has a custom MIB. But it also includes some data from standard MIBs (notably UCD) Now I could just tell my customers to load those OID seperatly or I could (this is possible if ...
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Custom MIB Textual Representation

I am an snmp beginner and have created a custom MIB and included it in snmpd.conf via pass persist. pass_persist .1.3.6.1.4.1.56947.1.1 /usr/bin/env python3 -u my_script.py While I can successfully ...
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Finding all IP (4 & 6) addresses for a host with SNMP

I'm replacing some code that used to run directly on various servers with some code that runs on one server in a cluster and interrogates each one via SNMP. This is going well, except when I try to ...
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SNMP Network traffic difference between ifInOctet and ifHCInOctet

I try to monitor some Cisco 2960x Switch devices and I know there are the SNMP OID's ifInOctets (32-bit Counter) and ifHCinOctets (64-bit Counter). Can someone explain me whats the difference between ...
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173 views

linux snmptrapd, how to write to a custom log file, or execute a custom command

Ubuntu 18.04 and 20.04, snmptrapd, versions around 5.7.3. Trap events go into syslog. Great. How can you make the log files go to a custom location besides syslog? logoption or logOption as seen in ...
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SNMP TCP Monitoring - Problems with tcpConnectionTable

I have a telegraf instance monitoring SNMP from a Synology NAS. I'd like to ingest TCP stats, specifically active connections. The TCP-MIB provides two methods.. one is deprecated but works, the 'new ...
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58 views

Checking Hard Disks working on Dell ESXi server using SNMP from Linux

I want to use SNMP, preferably over an SSH tunnel, to check whether the disks in my array are still working. There's 8 hard drives running behind a PERC controller on a Dell 730xd running ESXi v6. I'm ...
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Should SNMP ifHCInUcastPkts counters include packets bigger than 1522 bytes?

Packets bigger than 1522 bytes (as counted by Spirent Test Center) are being forwarded (bridged) but not counted in the following hardware counters on an Open Network Linux device: ifHCInUcastPkts ...
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how to find the SNMP trap Source

recently the network devices are getting a SNMP trap authentication failure from a server, how ever the SNMP feature is not installed and the SNMP trap service is disabled my guess it is from an ...
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Decrypting SNMP traffic on wireshark when using Net-SNMP as the SNMP manager

I am trying to figure out SNMPv3. How do you decrypt SNMP traps when using Net-SNMP as an SNMP manager? I'm running both Net-SNMP and Wireshark on Windows 10. I first tried to decrypt by entering ...
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Oracle12c standard edition SNMP monitoring

I have Oracle12c "standard" edition database running. I would like to enable SNMP to monitor this database. All the documentation I found so far pointing that I need "enterprise edition&...
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LibreNMS SNMP sysLocation geocoding

I just installed LibreNMS and cannot get geocoding working - nothing shows up on the map. I created a MapQuest api key and tried also with OpenStreetMap without luck. SNMP sysLocation setting is set ...
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1answer
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I have a centos server and I am trying to monitor memory via snmp but didnot got the actual result

I have a centos server and I am trying to monitor memory but didnot got the actual result. I have used Snmpwalk and used the oid of the used memory but it is returning me the value that is not matched ...
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Dell SNMP enterprise MIB returns no data - PowerEdge R720xd

I have a Ubuntu Dell server that returns no SNMP Data for MIB SNMPv2-SMI::enterprises. Has anyone have any idea on how to troubleshoot this? I've spent quite a time and yet haven't fixed. I've ...
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SNMP doesn't fetch SNMPv2-SMI::enterprises values by default

When I run SNMPWALK -v1 -c public -OQ 127.0.0.1 it fetches some information. But it doesn't fetch SNMPv2-SMI::enterprises OID's. There is a /var/lib/mibs/ietf/SNMPv2-SMI.mib file already. If I run ...
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219 views

Is it possible to configure the SNMP settings (destination address, community string) on a Dell iDRAC using RedFish?

I have this working with Proliant iLO but can't find anything in the docs or by poking around for iDRAC. I have looked at https://www.dell.com/support/manuals/us/en/04/idrac7-8-lifecycle-controller-v2....
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How can I get the current network in/out values of any NIC of a VMware ESXi host server?

I am aware that IF-MIB provides input and output values for any NIC of a target device via SNMP. Recently a sysadmin compared the values of a specific NIC of an ESXi host server in our VCenter with ...
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Monitor Active Calls on Mediant 800 SBC via SNMP

Currently trying to get the stats for 'Active Calls' on a Mediant 800 SBC. I'm going through the SNMP reference guide (https://www.audiocodes.com/media/14595/mediant-800-gateway-and-e-sbc-snmp-...
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SNMP: hrSystemUptime.0: Unknown Object Identifier (Sub-id not found: (top) -> hrSystemUptime)

I get the error in the title when I issue the following command. $ snmpget -v3 -u edgeos-snmpd-user -l authPriv -a SHA -x AES -A authPhrase -X privPhrase 192.168.x.x hrSystemUptime.0 hrSystemUptime....
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959 views

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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105 views

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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30 views

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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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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776 views

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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209 views

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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210 views

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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569 views

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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309 views

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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403 views

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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317 views

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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1k views

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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173 views

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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445 views

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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135 views

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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649 views

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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606 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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174 views

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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178 views

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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527 views

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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194 views

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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