If the port speed or breakout configuration of the ports used in the uplink need to be changed, make those changes before creating the uplink. See the Configure uplink port speed or breakout section of the Dell PowerEdge MX Networking Deployment Guide and make those changes before creating the uplinks.
Ethernet - No Spanning Tree uplink creation
Dell Technologies recommends creating an Ethernet – No Spanning Tree uplink and not the legacy Ethernet uplink. To create the uplink from the switch to the Cisco ACI leafs, see the Create Ethernet – No Spanning Tree uplink section in the Dell PowerEdge MX Networking Deployment Guide.
Legacy Ethernet uplink
PowerEdge MX versions prior to 1.20.00 and OS10.5.0.7 did not support the Ethernet – No Spanning Tree uplink type. It is recommended to be running at least PowerEdge MX 1.20.00 and OS10.5.0.7 and to not use the legacy Ethernet uplink. If that is not possible, follow these steps instead of the steps described above.
To create a legacy Ethernet uplink, see the Create Ethernet uplink section in the Dell PowerEdge MX Networking Deployment Guide.
If running the legacy Ethernet uplink, perform the following steps before creating the legacy Ethernet uplink in OpenManage Enterprise - Modular.
- Check if any Spanning tree protocol is enabled by running the following command.
MX9116n-1# show spanning-tree brief
- If any spanning tree protocol is running in this MX environment with Cisco ACI, run the following command to disable spanning tree:
MX9116n-1# spanning-tree disable
After creating uplinks, the SmartFabric creates the uplink object. If the connected Cisco ACI vPC is configured correctly, the uplink comes up and the status for the fabric changes to OK on the Devices > Fabric page as shown in the following figure.