topic Re: DNFC doesn't discover all interfaces a switch in an external fabri in Nexus Dashboard

DNFC doesn't discover all interfaces a switch in an external fabric

mushtaq-elhajaj — Thu, 30 Jan 2025 06:47:54 GMT

I am running Nexus Dashboard Fabric Controller (NDFC) Version 12.1.3b in a lab environment with switches in EVE-NG. My multisite setup is functioning correctly, with N9K switches deployed across all sites without issues.

I recently created an external fabric and added a Catalyst 9K switch to it. However, NDFC is only discovering a single interface—the one connected to the management network. The other interfaces are not being discovered.

Does anyone know why this might be happening? I need to discover the other interfaces so I can configure them for eBGP peering. Any insights or suggestions would be greatly appreciated.

Thank you in advance for your help!

Cheers

Mushtaq

Re: DNFC doesn't discover all interfaces a switch in an external fabri

M02@rt37 — Thu, 30 Jan 2025 06:56:34 GMT

Hello @mushtaq-elhajaj

Please refer here https://www.cisco.com/c/en/us/td/docs/dcn/ndfc/1201/configuration/fabric-controller/cisco-ndfc-fabric-controller-configuration-guide-1201/fabrics.html#task_sbz_qzk_1rb

--Adding Cisco Catalyst 9000 Series Switches to IOS-XE Easy Fabrics

Re: DNFC doesn't discover all interfaces a switch in an external fabri

mushtaq-elhajaj — Sun, 02 Feb 2025 22:42:14 GMT

Hi M02@rt37 , Thank you for sharing this document. I have the SNMP configuration but still see one interface only basically I only see the interface that is connected to the cloud (mgmt network) but not the other interfaces. I hope someone experienced that issue to help please!!

Re: DNFC doesn't discover all interfaces a switch in an external fabri

mushtaq-elhajaj — Sun, 02 Feb 2025 23:11:47 GMT

Hi M02@rt37,
The document you shared is great. But it didn't help. I am still seeing one
interface even after the SNMP configuration.

Re: DNFC doesn't discover all interfaces a switch in an external fabri

sunilv462 — Mon, 09 Feb 2026 17:07:24 GMT

Hi @mushtaq-elhajaj , are you able to find the solution? I am facing the same issue.

Re: DNFC doesn't discover all interfaces a switch in an external fabri

sunilv462 — Fri, 13 Feb 2026 22:25:48 GMT

After removing the "exec prompt timestamp" from the line configuration. My devices are showing up with all interfaces.

line vty 0 4
  exec prompt timestamp

I have had a TAC case open for a month, and they have not been able to find this until we fixed this. They have opened a bug.

https://bst.cloudapps.cisco.com/bugsearch/bug/CSCwt20618.