Nexus 2348TQ 100 base-tx

[Bram Van den Bosch]

Hi Community,

Does someone knows if the Nexus 2348TQ FEX supports 100 megabit speeds?

In the datasheet there is no mention of it, however on the following link it looks like it is possible?
http://blogs.cisco.com/datacenter/introducing-nexus-5624q-switch-seamlessly-migration-from-1g-to-10g40g

[Reza Sharifi · Accepted solution]

Hi,

The 2348TQ support 1Gig, 10Gig and 40G for uplink. It does not support 100Mb.

HTH

[Bram Van den Bosch]

Hi Reza, thx for the answer.

This would mean that we should choose the 2248TP-E for these connections.

How do we connect this to the 2348TQ with only QSFP's.

I suppose we can use QSFP-4SFP10G-CU1M (Cisco 40GBASE-CR4 QSFP+ to 4 10GBASE-CU SFP+ passive direct-attach copper transceiver assembly, 1m) or FET-10G 10G (Line Extender for FEX with breakout cable)?

Do we need to change the breakout mode for this? (interface breakout slot X port X-X map 10g-4x)
If yes, can this be done per port, or is it directly for the entire module?

[Reza Sharifi]

Hi,

This would mean that we should choose the 2248TP-E for these connections.

That is correct.  The 2248 is 100/1000

How do we connect this to the 2348TQ with only QSFP's

Are you trying to connect 2248 to 2348TQ?

If yes you need a breakout cable with one side being 40G with MPO connector and the other side 4 10Gig LC.

HTH

[Bram Van den Bosch]

Ok clear for me.

Twho more questions :-)

I suppose we need to change the breakout mode for this? (interface breakout slot X port X-X map 10g-4x)?

Can this be done per port, or is it directly for the entire module or switch?

[Reza Sharifi]

Hi,

No the breakout command is not for the entire module.  I think, it is for every 4 ports in the module, but not 100% sure.

HTH

[Khurram Noor]

In Nexus 5648, interface breakout works on a set of four ports at a time.

e1/1 = e1/1/1, e1/1/2, e1/1/3, e1/1/4

e1/2 = e1/2/1, e1/2/2, e1/2/3, e1/2/4

e1/3 = e1/3/1, e1/3/2, e1/3/3, e1/3/4

e1/4 = e1/4/1, e1/4/2, e1/4/3, e1/4/4

[grant.maynard]

It's probably too late for you now but it is worth noting that the 2348TQ does now support 100M on host ports. I think this came in NXOS release 7.1(1)N1(1) and is reflected in the data sheet.

Release Notes - http://www.cisco.com/c/en/us/td/docs/switches/datacenter/nexus5600/sw/release/notes/7x/Nexus5600_Release_Notes_7x.html#pgfId-583456

Datasheet - http://www.cisco.com/c/en/us/products/collateral/switches/nexus-2000-series-fabric-extenders/datasheet-c78-731663.html

[Steve Fuller]

Thanks for taking the time to update the post.

Regards