Catalyst 4500 listening on TCP 6154 on all interfaces

I saw that list, but understood the numbers there to be IDS signature
numbers, rather than port numbers. Am I misreading something?

I saw that list, but understood the numbers there to be IDS signature
numbers, rather than port numbers. Am I misreading something?

  No, you are correct.

As Niels Bakker pointed out that is a list of IDS signatures, not a list of ports that Cisco devices listen on.

I just skimmed the pages, I should have read them more thoroughly before sending to the list.