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Questions tagged [snmp]

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

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

SNMP is defined by a series of IETF Requests for Comment (RFCs). There are three versions of the protocol: SNMPv1, SNMPv2, and SNMPv3. RFC 3584 is the "Best Current Practice" for handling coexistence of the three protocol versions, and provides a view of interoperability issues between the versions as well as a list of references to the various RFCs that define the different versions.

SNMP generally operates over UDP on IPv4, but several transport mappings are defined in RFC 3417.

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How does snmpd know where to send a trap?

I'm trying to get my head around our snmpd.conf file in order to begin managing snmp with puppet. The existing file has several alarms setup for things like excessive disk space, load, etc. I'm assuming that when these conditions are reached an…
Andy
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Good way to cause SNMP traps on Ubuntu

I want to do a little SNMP testing and want to issue some traps from a test Ubuntu box. What are the easiest ways (for a Linux noob) to cause some traps to fire? Thanks
DougN
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Why is there an EtherType for SNMP?

Today I was reading through some documentation about the fundamentals of networks (IP, Ethernet, MPLS, ...). And while looking at the Ethernet Types that can be used in the Ethernet Frame I saw there was an Ethertype for Simple Network Management…
Christophe Lambrechts
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Did not find 'zeroDotZero' in module SNMPv2-SMI

I have a perl script that searches through our switches to find which one hosts a given IP address; this script uses net-snmp libraries to poll through a daisy-chain of ethernet switches (think core / distribution / access) until it finds the…
Mike Pennington
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Looking for toner level OID for nagios snmp for Brother 9460

I'm setting up an Opsview (nagios) server for monitoring. It's all going fairly swimmingly so far. The most immediate use for the system will be monitoring (or more to the point, alerting me about) printer toner levels. At the moment, the "alert"…
JoshP
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Do I need to enable some flag in order to monitor Ubuntu with SNMP?

Snmpd is running. I checked status by running snmpwalk(snmpwalk -v 1 -c public localhost). I ran this in order to get CPU info: snmpget -v 1 -c "community" localhost .1.3.6.1.4.1.2021.10.1.3.1 But I get an error: Timeout: No Response from…
Avihai Marchiano
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Default credentials for Cisco SNMPv3

I was wondering of SNMPv3 is enabled by default on Cisco devices and if there are default credentials?
Lucas Kauffman
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How to monitor a UDP multicast stream on a cisco network, hopefully with SNMP

We have a LAN with 2x Cisco 4500's as gateways running HSRP. We're using Exterity HD IP Encoders to take HD video and put it onto the network as a multicast UDP stream (playable in VLC). I have a fairely extensive Nagios setup on Linux and would…
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How to monitor dynamic network interfaces with MRTG? (*nix)

Every time I restart my OpenVPN tunnel it increments interface's number and breaks MRTG graph for the interface. IF-MIB::ifName.76 = STRING: tun_w after restart: IF-MIB::ifName.77 = STRING: tun_w Any way to fix it?
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Beginners Guide to SNMP?

I have been searching for days on a beginners guide or tutorial on understanding and using SNMP. I am looking for a guide that starts from the very basics of explaining what an OID and MIB's are to how to use snmpget and snmpwalk effectively to…
user89350
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SNMPWALK extract UCD-SNMP-MIBs

I am trying to use snmpwalk to get the MIB list and I couldn't get anything related to CPU, Load, Memory. On further digging in I found that the UCD-SNMP-MIBs are the one which will return the information I require. But, I couldn't find anything on…
Sabdhagiri
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cisco: get mac address from cdp neighbors

I need to find out the MAC addresses and ports of devices connected directly to a Cisco switch, preferably via SNMP. the best way i found is with CDP neighbors, but i don't find the MAC addresses, only ip and hostname. currently i get the mac from…
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Zabbix - send a trap to a SNMP server

How to generate a SNMP trap per event (custom media type script?) to a SNMP server/another monitoring tool ? If so, how to pass the community + OID as arguments to the media type script? By default, only the destination, subject and message seem to…
Joao Figueiredo
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Filesystem space available using SNMP

I'd like to collect filesystem space information using SNMP on Solaris 10 and Ubuntu 11.10. The problem is that SNMP doesn't seem to have an attribute that corresponds to the "Available" column in df. For example, here is the df -k output of my…
Tom Shaw
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SNMP Access on Ubuntu

I am trying to use SNMP to monitor a machine locally on its self and remotely. This is the snmpd.conf (Ubuntu 8.04.1): # sec.name source comunity com2sec readonly 1.2.3.4 nicenandtight com2sec readonly 5.6.7.8 …
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