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SNMP troubleshooting

I installed net-snmp on Ubuntu machine, but i can't seem to pull any data from remote snmp agents.
I am using a nagios plugin to test for that, but it timesout.

How can i verify that my SNMP server is running and how do i verify if my SNMP agent is running?
If you can give a way to test my snmp confgurations
Please advise, Thanks.

p.s. when i ran

ps aux | grep snmpd

i didn't get any results... so i am guessing my snmp daemon isn't running...

SOLUTION

xylog

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giltjr

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rootcoolk

Run 'ps' command to see if snmp server is running or not:

# ps -aux | grep snmp

Output:
root 5512 0.0 2.3 5872 3012 pts/0 S 22:04 0:00 /usr/sbin/snmpd

or yuou can

SOLUTION

rootcoolk

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jibranilyas

ASKER

# /etc/init.d/snmpd status
-bash: /etc/init.d/snmpd: No such file or directory

# lsof -i :199
no output, just got the prompt back

# ps -aux | grep snmp
Warning: bad ps syntax, perhaps a bogus '-'? See http://procps.sf.net/faq.html
root 15566 0.0 0.3 3060 748 pts/0 R+ 23:11 0:00 grep snmp

#netstat -anl
(only listing udp)

udp 0 0 0.0.0.0:514 0.0.0.0:*
udp 0 0 10.100.1.161:137 0.0.0.0:*
udp 0 0 0.0.0.0:137 0.0.0.0:*
udp 0 0 10.100.1.161:138 0.0.0.0:*
udp 0 0 0.0.0.0:138 0.0.0.0:*

So, it turns out that snmp is not running...

Now, when i do troubleshoot and get snmp running and i want to see if i can get snmp data from remote machines, how do i accomplish that ???
is it as simple as typing
# snmpwalk 10.10.1.100 public
?????

xylog

There is a good FAQ on the net-snmp package here: http://net-snmp.sourceforge.net/docs/FAQ.html

SOLUTION

ncbowden

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jibranilyas

ASKER

thanks ncnbowden.. it worked.

# snmpget -v 2c -c public 10.10.1.150 sysDescr.0
SNMPv2-MIB::sysDescr.0 = STRING: Hardware: x86 Family 6 Model 9 Stepping 5 AT/AT COMPATIBLE - Software: Windows 2000 Version 5.1 (Build 2600 Uniprocessor Free)

It also worked when i put "-v 1" i.e. snmp version 1, so I guess my question is how do i know which version of SNMP is the remote machine (10.10.1.150) is running..

ncbowden

Its quite tricky to figure out.

Many SNMP agents (as you have seen) will support both V1 & V2C at the same time.

I don't have a definitive answer for you, apart from querying the device (as you have) with both the V1 & V2C parameter from Net-SNMP, and seeing which one answers. In your case, it supports both !

The other answer, I guess, is to consult the vendor docs for the SNMP agent.

HTH

Nigel.