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Check a device for SNMP

Posted on 2011-04-22
Medium Priority
Last Modified: 2012-05-11
Hello, I'm trying to setup a remote device with MRTG 2.17.1 for bandwidth monitoring, I have setup my local gateway already.  However, I first want to make sure that I'm able to poll the device with SNMP, which uses UDP port 161. I'm not able to ping the device currently ICMP packets are being blocked.

My question, is there a way to verify whether I'm able to poll the device with SNMP? Do I need to have ICMP filtering turn off for SNMP polling to work?

Any help or suggestions would be appreciated.
Question by:vrosas_03

Author Comment

ID: 35446207
Oh, forgot to mention that I'm running Windows Server 2003 / Windows XP SP3.

Thank you.
LVL 11

Assisted Solution

gmbaxter earned 100 total points
ID: 35448922
telnet device.domain.com 161
If it connects the port is open and snmp is listening
LVL 57

Accepted Solution

giltjr earned 1600 total points
ID: 35449158
Well the telnet trick only works if it is listening on TCP port 161, which normally SNMP will not do.

I would just use cfgmaker to configure it for MRTG.  If it listening on UDP 161 and you know what the community string is, it will work.  If not it will not work.

Do you have admin access to the device?  If so, see if it is configured to allow SNMP queries and what the community string is.

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LVL 21

Assisted Solution

Rick_O_Shay earned 200 total points
ID: 35449175
You might be able to see what is going on if you do a packet capture with Wireshark or something while testing it if you want to go to that level.

Assisted Solution

jon1966 earned 100 total points
ID: 35451860
Your SNMP software will give you a connection OK or NOT OK status.

Author Closing Comment

ID: 35464641

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