Test the two ways (not ports) .
I've used the snmpwalk command this way in the past to test the snmp connection.

That's fine. But you still aren't answering my questions.
I will not help you any further. Good Luck.

Which questions?
I thought I had answered all you asked, didn't I ?

The first three in http://www.linuxquestions.org/questi...0/#post5561920 ?
Skip the snmpwalk Question.

Answer or not.
Maybe it doesn't matter.
Maybe I'm just cranky, or irritable today.
I don't know.

Nothing personal, I just like actionable facts instead of the "Nerd Jeopardy" with back and forth 100 questions.
Our time here is valuable.
Our experience is invaluable.
So if asking for help, be prepared to be questioned. There is usually no "one-size-fits-all" answer.
This is true all over the web. Queries for help are usually replied to with "gimme the facts" if they were'n't supplied.
Never say never.

Here's some things to consider at http://catb.org/~esr/faqs/smart-questions.html

Have a great day!

Someone else will be along to help.

Look this:
#snmpwalk -OS -c netcomro -v 1 172.27.252.3
Timeout: No Response from 172.27.252.3
Can I say the Snmp connection is blocked in the way ?

Sorry,
The info you asked:
OS is Red Hat Enterprise 16, 64 bits(Intel based)
The MRTG was installed using yum command.
Is that you asked ?

The command used:
#snmpwalk -OS -c netcomro -v 172.27.252.3
The response:
Timeout: No response from <address above>
What do you think ?

I asked about The router SNMP Connection.
The device isn't accepting The connection, they told me to wait they are going to verify this. I put when Have News. Tks

Is another way to Ensure The router isn't accepting snmp connections ? I am sure of this, but I need to show it to network profissional here.
Tks

I will do it tomorrow.
Post the results here.
Thanks

The only result necessary is a successful connection.

I remembered this night:
There, we can't use telnet , only SSH.
Is it possible SSH <host> port ?
I saw after you sent, SNMP uses ports 161 and 162. Is that correct?
Tks

You can try

root@li1964 ~]# ssh -p 161 172.27.252.3
ssh: connect to host 172.27.252.3 port 161: Connection refused
[root@li1964 ~]# ssh -p 162 172.27.252.3
ssh: connect to host 172.27.252.3 port 162: Connection refused

The device really isn't accepting SNMP connections.
I asked to correct this to allow this monitoring.
Thanks