Nexus 5000... do GigE SFPs support 100Mb connections?

[ColKurtz]

Customer told me he doesn't think Nexus 4000/5000 switches support 100mb connections. I thought Nexus was 10Gb only, but just read they do allow GigE SFPs, but I can't find any documentation/confirmation whether those support 10/100Mb connections... most of his mgmt ports on their servers/storage only support 100Mb connections.

Anyone have any idea? Any advice is appreciated.

 

[azev]

It would be a waste of money to put management port for servers to a nexus switch.
My recommendation would be to use a lower end cisco switch such as 2960 to accommodate server management ports.

 

[spidey07]

It would be a waste of money to put management port for servers to a nexus switch.
My recommendation would be to use a lower end cisco switch such as 2960 to accommodate server management ports.

Agreed. And on fiber then no, it's 1000 only on an SFP. If copper SFPs for 1000 Base-T then highly unlikely they'll support 100 Base-T. Those SFPs aren't normally "triple speed" 10/100/1000.

I don't have direct experience with the nexus, just going off of other platforms.

 

[RadiclDreamer]

None of the nexus line support 100mb anymore, we have a 3750 in the rack for the older stuff that doesnt do gig. Its 10g or 1g only. Further, your 10g modules wont do 1g

 

[Cooky]

Nexus 5K's don't support 100M, but the Nexus 2248 fabric extenders do.
We populated our new cabinet rolls w/ them
It's nice to be able to support MDS mgmt0 port that only runs up to 100M.

 

[RadiclDreamer]

Nexus 5K's don't support 100M, but the Nexus 2248 fabric extenders do.
We populated our new cabinet rolls w/ them
It's nice to be able to support MDS mgmt0 port that only runs up to 100M.

Odd, ours wont even link light when a 100mb device is added. I was also told in my nexus training class that they werent supported since the asics werent there to support 100mb

 

[Cooky]

The 2148 & 2232 FEX's don't, but the 2248 supports it.
The 2248 probably didn't come out until after you took your training.
Many management ports such as those on MDS & server iLO's only support 100M.
It would be silly having to rack extra switches just to support them, while you're trying to simplify your L2 infrastructure w/ Nexus 5K's & 2K's.

 

[RadiclDreamer]

The 2148 & 2232 FEX's don't, but the 2248 supports it.
The 2248 probably didn't come out until after you took your training.
Many management ports such as those on MDS & server iLO's only support 100M.
It would be silly having to rack extra switches just to support them, while you're trying to simplify your L2 infrastructure w/ Nexus 5K's & 2K's.

Thats what we thought, so currently we have a stack of 3750 in the core rack for 100mb devices

 

[ColKurtz]

Thanks for the advice everyone.