SNMP Configuration

Hi!!

I have a problem trying to use the snmp service. When a I try to execute
the following command:

/usr/local/bin/snmpget -t 1 -r 5 -m '' -v 1 -c Public xxx.xxx.xxx.xxx161
.1.3.6.1.4.1.311.1.1.3.1.1.1.29.0

I received the following output

Timeout: No Response from 200.31.92.91:161.

In both box (where I ran the command and xxx.xxx.xxx.xxx) are the snmp
services running

What can I do? What could it be the proble?

Thank you very much for any help

Alfonso