Receiving SNMP traps in NCM

Question

We're currently using NCM to pull configs and push config changes, etc., but I saw that NCM also has a TrapViewer.  I set up an SNMP config on our switch so that traps would be sent when VLANs are created, but when I create a VLAN I don't see anything in the TrapViewer.  I checked the switch with "show snmp" and saw that it was sending traps when I created VLANs, and I've already used NCM to pull configs and other SNMP info, so I know that the strings are configured correctly.  Is there anything I need to configure on NCM to get it to accept the traps, or is there any way of checking to see that it is in fact receiving these traps?  Here's the SNMP config I'm using on the switch:

snmp-server community [read_only_string] RO
snmp-server community [read_write_string] RW
snmp-server enable traps vlancreate
snmp-server host [IP of SW server] [read_only_string]

Thanks.

chris.lapoint · Answer

Ok, last thing to check.   The NCM Trap Service depends on the Microsoft SNMP Service to receive the traps and I noticed that you specified a read-only string in your trap configuration:

snmp-server host [IP of SW server] [read_only_string]

You'll want to check the Microsoft SNMP service Security tab and ensure that the read only string you specified is an accepted community name and that it's set to accept packets from any host.

To answer your question.  Yes, NPM is definitely the product for network fault and performance monitoring.   NCM is focused on config management.

FormerMember · Answer

I already installed Wireshark on our NCM server and generated some traps from our Cisco switches.  Wireshark showed an incoming SNMP packet from the Cisco switch, but still no traps showed up in TrapViewer.

I'll probably just shelve this issue, as we'll be using a different product for our monitoring and we're just going to use NCM for configuration management.

Isn't NPM the product for monitoring, more so than NCM?  We'll be installing NPM in the next few weeks.

chris.lapoint · Answer

You can download a free trap generator from here:  http://www.ncomtech.com/downloads/windows/trapgen28.zip

I would try installing on a different machine and then send traps to your Orion NCM server.