09-23-2020 02:06 AM - edited 09-23-2020 02:14 AM
We are looking to use Nexus 9336C-FX2 switches as ACI leaves, but are unsure whether there are limits on the use of breakout cables with this switch. Specifically, how many 10G ports can be presented on a single switch in ACI mode...
I have found the following 4 relevant documents:
Firstly, the documentation is not entirely clear about whether breakout to 10 Gbps is supported, or whether 10 Gbps support requires a QSA. I'm pretty sure it is saying that you can use either breakout cables or a QSA to achieve 10 Gbps, but it would be good to have confirmation.
Secondly, the ACI install guide says the switch supports 20 breakout ports. But there's no mention of that in the NX-OS install guide or anywhere else. Is that indeed an ACI-specific limitation? I assume it means up to 20 breakout cables can be used (but no more), resulting in a maximum of 80x 10G ports resulting from those breakouts, plus the remaining 16x 100G non-broken-out switchports. Can anyone confirm whether this is correct?
I also assume there is a typo in the ACI install guide... ie instead of "Ports 1-34 support 4x25-Gigabit, and 4x100-Gigabit breakout" it should say "Ports 1-34 support 4x25-Gigabit, and 4x10-Gigabit breakout"
P.S. I'm not really bothered about clarification on whether ports 31-36 support breakout (as we'll use those for uplinks). Although it is another ambiguity (the transceiver compatibility matrix says those ports don't support breakout; the ACI install guide says ports 31-34 do, but 35-36 don't support breakout; whereas the other two documents say all ports do).
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