Connection Refused by x.x.x.x - Problem Downloading Configuration

n0_0b

So this is a bit strange.  We consistently have one switch that will not backup with NCM.  I have confirmed that the account created for backup access works by SSHing to the device with the same exact credentials.

Would you think removed the device from NPM/NCM will alleviate this issue?

Thanks.

abeeson

Are you using SSH V2 on your devices?

If you are sure SSH is working, i would:

a) check what SSH type your using in NCM. It should be SSH auto if you have not standardised to SSH V2 on your switches.

b) check that you can SSH to the device from whatever server is running NCM. ACL blockages show as time-outs normally, but this would still be worth checking

Outside of that i would have no idea, but i would expect clearing and re-adding it would not work.

Final note - i have a few devices that have discovered with their network IP for their device IP (due to being L3 switches and i think the way SNMP sends out the IP, still confirming the fix but i think snmp source-interface will do it) and they show connection refused when trying to poll the device configs, however SNMP works (somehow) for device monitoring. Double check the IP that NCM has for the device just to be sure.