All of the 10Gbit stuff I'm aware of here at Goddard is over fibre. I assume it's single mode, but that isn't really my area of expertise. I mentioned Cat 6a ab

All of the 10Gbit stuff I'm aware of here at Goddard is over fibre. I assume it's single mode, but that isn't really my area of expertise. I mentioned Cat 6a above because I know that some projects here are using it, I didn't mean to imply that it was the preferred media for 10Gbit here generally.