NCM connection refused

Verify that your NCM is using the correct SNMP credentials:

AND that you have a connection profile with the correct devices - this is what NCM uses to login to your Alcatel devices.

You may need to create a new connection profile for your devices that are not working with new login credentials:

thank u its now work

shawn_b, I am having the same issue with my Cisco switch.  I'm using SNMPv3 which passes the test, but do I also need to set up a connection profile?

1ashgarg, yes you do

The connection profile is what NCM uses to login to your switch.

During automated or manually initiated tasks such as upload\download config, NCM needs to login to the switch in a telnet\SSH session similar to the way you would, to execute the commands

You need to define the admin username and password as well as enable password (if applicable) in the connection profile so that NCM can "parse" these credentials when the switch OS prompts during the telnet login.

If you have different admin usernames and passwords, you should create different connection profiles and assign the relevant one to the respective nodes in NCM. I might be subject to correction in this as I only use 1 admin and enable password on all my nodes.

Bit of confusion here - NCM will use whatever connection profile you set to download configs, config change templates, etc.   In the case of the screen shot above, that would be telnet.  (I would prefer to use SSH, but that is the same area)

So, if you are getting connection refused - first make sure you can telnet / ssh into the device from your NCM server (or additional pollers, if you have the feature enabled)

If you cannot, then either you have invalid username/password or your blocked by ACLs.

Once you can successfully telnet /ssh in manually - set that same configuration up in the connections profile dialog box.