Backup VM filed use Veeam

[as900w]

I want to backup VM use Veeam. But ti's failed.

show "NFC storage connection is unavailable." error.

I check backup log that show "Establishing connection with the host [esxi]. Port: [902]. Failed."

Then I  check ESXi host Firewall, the 902 port is open in Incoming Connections.

What should I do?

My vCenter Server is 6.5

ESXi host is 6.5

[a_p_]

Is the Veeam Backup (or Proxy) server in the same subnet as vCenter Server/ESXi?

Are there any network firewalls active between subnets?

Can you confirm that the Backup Server has proper network access to vCenter/ESXi, i.e. is not redirected by a Proxy server setting on the Backup Server?

See also whether https://www.veeam.com/kb1198 helps.

André

[as900w]

The Veeam Backup Server is in the same subnet as vCenter Server/ESXi.

Veeam Backup Server to vCenter Server/ESXi network is OK. I can access them on the Veeam Backup Server.

[diegodco31]

Please, you could check this: NFC storage connection is unavailable. - Veeam Community Forums

Some people resolved with this link: VMware Knowledge Base

[timweaver23]

This could be a firewall / networking / (split)DNS issue See KB1198: NFC connectivity troubleshooting steps 

[as900w]

This is a network issue. It has to do with distributed switches.

I change to other network, then it's OK.