I think most (all?) consumer kit these days it auto-sensing, the manufacturers don't trust the public to know whether to use a straight or crossover cable.

Which makes life much easier for all of us

But a half straight / half cross over ... an interesting variant! Is there such a thing as a "bi-" cable?

But as it is Tx+ & TX- it should not be too much of a problem.

In reply to a post by MHC:

But a half straight / half cross over ... an interesting variant! Is there such a thing as a "bi-" cable?

A good question

Must admit I'd always assumed that Ethernet input stages were differential (for best CMRR) and could handle pretty much anything vaguely legal that you threw at them, including inverted binary due to a half crossover... sounds like, purely by accident, I may have been right!

did you get them wrong on both ends? if so then it cancels the problem out

In reply to a post by Pipexer:

did you get them wrong on both ends? if so then it cancels the problem out

No, just at the patch panel end