SNMP Simulator is a tool that acts as multitude of SNMP Agents built into real physical devices, from SNMP Manager's point of view. Simulator builds and uses a database of physical devices' SNMP footprints to respond like their original counterparts do.
This is a pure-Python, open source and free implementation of SNMP agents simulator distributed under 2-clause BSD license.
SNMP simulator software is freely available for download from PyPI and project site.
Just run:
$ pip install snmpsim
Once installed, invoke snmpsim-command-responder and point it to a directory
with simulation data:
$ snmpsim-command-responder --data-dir=./data --agent-udpv4-endpoint=127.0.0.1:1024
Simulation data is stored in simple plaint-text files having OID|TYPE|VALUE format:
$ cat ./data/public.snmprec
1.3.6.1.2.1.1.1.0|4|Linux 2.6.25.5-smp SMP Tue Jun 19 14:58:11 CDT 2007 i686
1.3.6.1.2.1.1.2.0|6|1.3.6.1.4.1.8072.3.2.10
1.3.6.1.2.1.1.3.0|67|233425120
1.3.6.1.2.1.2.2.1.6.2|4x|00127962f940
1.3.6.1.2.1.4.22.1.3.2.192.21.54.7|64x|c3dafe61
...
Simulator maps query parameters like SNMP community names, SNMPv3 contexts or IP addresses into data files.
You can immediately generate simulation data file by querying existing SNMP agent:
$ snmpsim-record-commands --agent-udpv4-endpoint=demo.pysnmp.com \
--output-file=./data/public.snmprec
SNMP version 2c, Community name: public
Querying UDP/IPv4 agent at 195.218.195.228:161
Agent response timeout: 3.00 secs, retries: 3
Sending initial GETNEXT request for 1.3.6 (stop at <end-of-mib>)....
OIDs dumped: 182, elapsed: 11.97 sec, rate: 7.00 OIDs/sec, errors: 0
Alternatively, you could build simulation data from a MIB file:
$ snmpsim-record-mibs --output-file=./data/public.snmprec \
--mib-module=IF-MIB
# MIB module: IF-MIB, from the beginning till the end
# Starting table IF-MIB::ifTable (1.3.6.1.2.1.2.2)
# Synthesizing row #1 of table 1.3.6.1.2.1.2.2.1
...
# Finished table 1.3.6.1.2.1.2.2.1 (10 rows)
# End of IF-MIB, 177 OID(s) dumped
Or even sniff on the wire, recover SNMP traffic there and build simulation data from it.
Besides static files, SNMP simulator can be configured to call its plugin modules for simulation data. We ship plugins to interface SQL and noSQL databases, file-based key-value stores and other sources of information.
Besides stand-alone deployment described above, third-party
SNMP Simulator control plane
project offers REST API managed mass deployment of multiple snmpsim-command-responder
instances.
Detailed information on SNMP simulator usage could be found at snmpsim site.
If something does not work as expected, open an issue at GitHub or post your question on Stack Overflow.
Bug reports, fixes, suggestions, improvements, and your pull requests are very welcome!
Copyright (c) 2010-2019, Ilya Etingof. Copyright (c) 2022-2024, LeXtudio Inc.. All rights reserved.
FAQs
SNMP Simulator is a tool that acts as multitude of SNMP Agents built into real physical devices, from SNMP Manager's point of view. Simulator builds and uses a database of physical devices' SNMP footprints to respond like their original counterparts do.
We found that snmpsim demonstrated a healthy version release cadence and project activity because the last version was released less than a year ago. It has 3 open source maintainers collaborating on the project.
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