Uplink / stacking link bandwidth of Summit X670-48x-FB switches

[Benjamin_Woenig]

I read through the Summit X670 product literature and specifications however it is not clear to me what the actual uplink / stacking link bandwidth is of the X670-48x-FB.

I am looking to deploy 5 separate "stacks' of X670-48x-FB switches which are separated by approximately 20-30m between each switch. The maximum stack size is 7 switches. I understand that ports 47 and 48 are the stacking ports, however can these ports be configured for 40Gbe or only 10Gbe on this particular model?

Is it correct that ports 45 and 46 are disabled when ports 47 and 48 are used to stack the switches together?

Lastly, are different SFPs (40Gbe?) required on ports 47 and 48 to stack the switches to leverage the maximum back plane bandwidth possible?

Thank you,

[Benjamin_Woenig]

Hi André,

Thanks for your message, this helps a lot.

I am looking to deploy approximately 20 of these X670-48x-FB switches for video over IP transmission. The switches have already been purchased and I am concerned they may not be suitable for the solution.

Each switch will have approximately 40 video encoder and decoder devices (10GE SFP+ connections). Switches will be anywhere from 20m to 100m apart and there is a requirement to be able to transmit a video source from one room to any of the others. It seems pointless to stack the switches as we lose 2x ports and the maximum stack size is 8 switches. I have attached both a ring and a star network design. Is the star network design optimal for this scenario? Most video traffic will be contained within each switch supporting the local devices. Only single video feeds (on occasion) will need to traverse the network.

I have provided ring and star mock up topologies below:

Are you able to provide any further advice on this deployment?

Thanks,
Benjamin