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M3 APICs Connected to Converted Fabric Ports via Breakout



I am hoping someone might be able to validate this configuration.

Having the following components:

  • N9K-C93108TC-FX Leaf
  • M3 APIC (APIC-PCIE-C25Q-04 VIC 1455 for the APICs)
  • QSFP-4X10G-AOC (1M, 2M, 3M, 5M, 7M, 10M) Breakout cable

M3 APIC with VIC 1455 connected to N9K-C93108TC-FX fabric uplink ports (49 -52 only) converted to downlinks with breakout cable QSFP-4X10G-AOC.  Is this a valid and Cisco supported configuration?

If so, must it be active or distances permitting can passive be used?


QSFP-4SFP10G-CU (.5M, 1M,2M, 3M,4M, 5M)

QSFP to 4 SFP+ copper break-out cables


Finally would the 40 -10 CVR-QSFP-SFP10G converter be valid for APIC connections on converted downlink interfaces?


Thank you in advance for information.

1 Reply 1


H1 @eugenia ,

I think this quote from the Cisco APIC Layer 2 Networking Configuration Guide will clear it up for you

Observe the following guidelines and restrictions:

  • For the Cisco N9K-C9332PQ switch, you can configure ports 1 to 26 as downlink ports. Of those ports, breakout ports can be configured on port 1 to 12 and 15 to 26. Ports 13 and 14 do not support breakout.

  • Breakout ports are supported only on downlinks and converted downlinks.

    • <skip a few>
  • Breakout ports cannot be used for Cisco APIC connectivity.

So the answer is NOT the one you were hoping for - APICs can't be connected via breakout ports.

I hope this helps

Don't forget to mark answers as correct if it solves your problem. This helps others find the correct answer if they search for the same problem


RedNectar aka Chris Welsh.
Forum Tips: 1. Paste images inline - don't attach. 2. Always mark helpful and correct answers, it helps others find what they need.
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