FEX to Leaf Conversion
In FEX to leaf conversion, FEX can either use the existing leaf image which was used before converting to
FEX or copy a new one after configuring management.
• To convert a FEX mode switch to a leaf switch:
Step 1 Use an ACI image, which can be an existing leaf image in bootflash or copy a different ACI image to the FEX bootflash
via copy scp command.
Step 2 Run boot aci <image> CLI to set boot variable and convert to leaf.
New FEX Setup
Cisco Nexus FX3 platform switches will be shipped with leaf mode.
• To use a Cisco Nexus FX3 platform switch as a FEX"
Step 1 Run the boot-fex CLI via console to set the FEX boot variable and reload to convert to FEX.
Step 2 Connect the new FEX to a Leaf in the topology.
Change an Existing Leaf in the Topology to FEX
In an existing ACI topology, a Leaf switch will be connected to a Spine switch directly.
Step 1 Leaf to FEX conversion can be triggered by running via boot-fex command
Step 2 The FEX (previously leaf) will have to be re-connected to another Leaf in the topology for it to come up.
Step 3 FEX policies can be configured on the APIC as required.
Change an Existing FEX in the Topology to Leaf
In an existing ACI topology, a FEX switch will be connected to a Leaf switch directly.
Step 1 FEX to Leaf conversion can be triggered using boot aci <image> command on FEX.
Step 2 The Leaf (previously FEX) will have to be re-connected to a Spine switch in the topology for it to come up in APIC.
Step 3 Leaf policies can then be configured on the APIC as required.
Cisco Nexus 93108TC-FX3P ACI-Mode Switch Hardware Installation Guide
35
Connecting the Switch to the ACI Fabric
FEX to Leaf Conversion
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