Configuring Floating L3Outs
Software Requirements
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Floating L3Out with VMM domain requires Cisco Application Policy Infrastructure Controller (APIC) Release 4.2(1) or later.
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Floating L3Out with physical domain requires Cisco APIC Release 5.0(1) or later.
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Avoiding a suboptimal path requires the following Cisco APIC Releases:
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If the next-hop for the external prefix is the directly attached IP:
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Next-hop propagation with BGP requires Cisco APIC Release 5.0(1) or later.
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Next-hop propagation with OSPF and static route requires Cisco APIC Release 5.2(1) or later.
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If the next-hop for the external prefixis not the directly attached IP but instead a loopback address (multi-protocol recursive route resolution), Cisco APIC Release 5.2(1) or later is required.
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Hardware Requirements
Ensure that you have the correct leaf switches. Floating L3Out does not support the following top-of-rack switches:
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Cisco Nexus 9332PQ
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Cisco Nexus 9372PX
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Cisco Nexus 9372TX
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Cisco Nexus 9396PX
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Cisco Nexus 9396TX
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Cisco Nexus 93120TX
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Cisco Nexus 93128TX
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Cisco Nexus 9372PX-E
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Cisco Nexus 9372TX-E
Floating L3Out mandates the use of generation-2 leaf switches as anchor and non-anchor nodes. The generation-1 switches listed above cannot be configured as anchor or non-anchor nodes. However, you can use a generation-1 switch as a non-border leaf or a compute leaf switch where floating L3Out is not provisioned.