Add switches to SmartFabric

CAUTION: Do not connect any new switches in SmartFabric mode to the fabric until the preferred leader settings are validated on the existing and new leaf switches. This was covered earlier in Verify preferred leader setting before fabric expansion.

In this section, the two spine switches and two leaf switches are added to the SmartFabric. These are Spine1, Spine2, Leaf2A, and Leaf2B, as shown in SmartFabric and VxRail cluster expansion.

Cable the switches as shown in Expand SmartFabric and VxRail cluster to multirack. Connection details are shown in Production network connection details. Also, make OOB management connections, as shown in OOB management connection details.

CAUTION: The following commands delete the existing switch configuration. Switch management settings such as management IP address, management route, hostname, NTP server, and IP name server are retained.

Spines

The following commands are run on Spine1 and Spine2. This puts the switches in SmartFabric mode as spines.

OS10# configure terminal
OS10(config)# smartfabric l3fabric enable role SPINE

Reboot to change the personality? [yes/no]:y

The configuration is applied, and the switch reloads. Repeat on the second spine switch.

Leafs

The following commands are run on Leaf2A and Leaf2B. This puts the switches in SmartFabric mode as leafs and configures them as VLT peers.

Note: This example uses the two QSFP28 2x100 Gb DD ports, Ethernet 1/1/49-1/1/52, for the VLTi connections on each leaf.

OS10# configure terminal
OS10(config)# smartfabric l3fabric enable role LEAF vlti ethernet 1/1/49-1/1/52
 
Reboot to change the personality? [yes/no]:y

The configuration is applied, and the switch reloads. Repeat on the second leaf switch.

Optionally, run the following command to verify that a leaf or spine switch is in SmartFabric mode:

OS10# show switch-operating-mode
Switch-Operating-Mode : Smart Fabric Mode

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