05-05-2023 02:52 PM
I want to configure a 10G uplink from a C9300-48U-E (stack) with the C9300-NM-8X (8x10Gb module) to the QSFP port on a Nexus N9K-C9348GC-FXP (40G). I have the QSFP-40G-SR-BD plugged in and did the module breakout, but I don't see where I can tie the 10g uplink to one of the 4 breakout interfaces from the Nexus.
Is this even a supported scenario? Or will I need to go with QSFP module for the Catalyst?
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05-05-2023 03:11 PM
05-05-2023 03:11 PM
05-05-2023 03:16 PM
Question: Why not get a C9300-NM-2Q instead?
05-08-2023 07:32 AM
Yes - that was the first route, it's on order, but the lead time on the part is beyond the requirements.
05-06-2023 02:33 PM - edited 05-06-2023 02:35 PM
Once you convert a 40Gig to 4 10Gig, there is naming convention depending on the module you are using. Should be:
Ethernet slot/front panel port/breakout port
see page 9 in this document:
Ethernet //. For example, per-port level breakout ports can be identified as Ethernet 1/2/1, Ethernet 1/2/2, Ethernet 1/2/3, and Ethernet 1/2/4.
05-08-2023 07:42 AM
That is true - While it does break it out to the 4 interfaces on the Nexus side and I can see them all (and I enabled all of them just to make sure that something had light going through) - I still wasn't able to get a connection with the SFP interface on the Catalyst. I subsequently tried it with the quad breakout AOC cable and that worked like a charm.
Could it be that the QSFP (that has LC fiber connection) to 10G single SFP just isn't an option?
05-08-2023 07:53 AM
And from the link provided earlier by MHM Cisco World, "Also, some transceivers like the QSFP-100G-SR-BD and QSFP-40G-SR-BD don’t have breakout capability..." So... I guess that's my answer.
05-08-2023 08:00 AM - edited 05-08-2023 08:02 AM
Could it be that the QSFP (that has LC fiber connection) to 10G single SFP just isn't an option?
Could be, because BD is a Cisco propriety optic and used to be available on the Nexus platforms only, but now it can work on Catalyst as well.
Good Luck!
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