Disconnected ( connection-error - Host not found (authoritative) )

[fundacioampans]

Hello, I’m having issues with Cisco switches when trying to connect to the Cisco Business Dashboard portal.

The new switches connect without any problems, but other switches that are configured exactly the same with the same parameters:

time
DNS
gateway
netmask

and located in the exact same site or rack cabinet — some are connected to the cloud while others appear as disconnected.

I’ve checked the CBD certificate, and it’s the same on both the connected and disconnected switches.

When I try to connect one manually by DNS or IP, I get the following error:

CBD Retrieve Certificate failed - check device connectivity with Dashboard

Here is an example of a switch that is connected:

And another example of a switch that does not connect:

Is there any way to reconnect without having to factory reset the switches?

[Jens Albrecht]

Hello @fundacioampans,

can you successfully 'ping dashboard.cisco.com' from those switches?
If yes, did you try to re-install the CBD certificate?

HTH!

[fundacioampans]

Hello, yes, I’ve done a ping using DNS and IP, and it responds correctly.

After that, I do the following:

Disconnect Probe + Dashboard
Apply and save

Delete the certificate
Apply and save

Clear Probe Database

Try to reconnect again to the Cisco Business Dashboard

And after doing all this, it still keeps failing.

[Mark Fang]

This may be a DNS resolution issue. Please try pinging the CBD server's domain name from the switch. If the ping succeeds, reapply the DNS server settings with these commands:

no ip name-server
ip name-server {DNS server address}

[fundacioampans]

Now, using the IP instead of DNS, this error appears, and the CDB certificate has been downloaded again.

dashboard certificates

[Mark Fang · Accepted solution]

To use an IP address, the CBD server certificate must include the IP address in the Subject Alternative Name (SAN) field. I think your current certificate does not have the IP address in the SAN.

Have you tried reapplying the DNS server settings on the switch? If you prefer to do this through the switch GUI, go to General IP Configuration > DNS > DNS Settings.

If this still does not work, try adding a static host-to-IP mapping on the switch using the command: ip host {CBD-server-domain} {CBD-server-ip}
Alternatively, you can do this through the switch GUI by navigating to General IP Configuration > DNS > Host Mapping (Advanced mode required).