Why snmpget doesnt work to one switch

[Jessuzz94]

Hi, the issue is this, i have nagios installed with the net-snmp and net-snmp-utils , the snmp works monitoring to one switch directly connected to my nagios servers, but now i want monitor one router that is not direclty connected but it is in the same network so i can ping to the router, i put the service PING and it shows OK, but now i want to but snmp services for the router, like the check_uptime, i test a snmpget to try if the snmp work:

Code: Select all

snmpget -v 2c -c public "router-ip" sysUpTime.0

And shows me : Timeout: No response from "router-ip"

What can i do?, it can be problem of the snmp community configured in the router?

[lgroschen]

I would first check to see if your system has a firewall running, if it does you need to allow port 161.

Also, I would check your snmpd.conf file to see if you are allowing connections from specific IP's or allowing all connections here:
/etc/snmp/snmpd.conf

then run:

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service snmpd restart

Then see what you get for a return from the snmpget.

[Jessuzz94]

i think allowing 161 port works,thanks!, just one thing, if another switch or router that i want to monitor is in other subnet, and if a route protocol is configured, no matter if nagios and the router have differents subnets, im going to be able to monitor ping, bandwidth, and uptime of the router/switch?

[hsmith]

i think allowing 161 port works,thanks!, just one thing, if another switch or router that i want to monitor is in other subnet, and if a route protocol is configured, no matter if nagios and the router have differents subnets, im going to be able to monitor ping, bandwidth, and uptime of the router/switch?

As long as you have a route there, and can ping you should be just fine. Is there anything else you need help with, or are we all right to close this one?

[Jessuzz94]

another D:, i what cases i will need to configure passive checks?

[tgriep]

Take a look at this link for a few reasons to use passive checks.
https://assets.nagios.com/downloads/nag ... hecks.html

[Jessuzz94]

Oki doki, thanks!

[hsmith]

Oki doki, thanks!

Is there anything else that we can do for you regarding this, or are we free to lock this topic?

[Jessuzz94]

Can lock !

[hsmith]

Can lock !

Thank you.

Please let us know if you have any more questions!