On Tue, 13 Oct 2020 14:29:29 +0000 Danielle Ratson wrote: > > On Mon, 12 Oct 2020 15:33:45 +0000 Danielle Ratson wrote: > > > > What's the use for this in practical terms? Isn't the lane count > > > > basically implied by the module that gets plugged in? > > > > > > The use is to enable the user to decide how to achieve a certain speed. > > > For example, if he wants to get 100G and the port has 4 lanes, the > > > speed can be achieved it using both 2 lanes of 50G and 4 lanes of 25G, > > > as a port with 4 lanes width can work in 2 lanes mode with double > > > speed each. So, by specifying "lanes 2" he will achieve 100G using 2 > > > lanes of 50G. > > > > Can you give a concrete example of serdes capabilities of the port, what SFP > > gets plugged in and what configuration user wants to select? > > Example: > - swp1 is a 200G port with 4 lanes. > - QSFP28 is plugged in. > - The user wants to select configuration of 100G speed using 2 lanes, 50G > each.
I mean.. sounds quite contrived to me. But I'm not opposed if others are fine with the change.
