[namibj]

That's a separate concern.

The previously mentioned issue is that to never buffer packets in a reclocking repeater on a link, you _need_ the incoming packet rate to never be higher than the rate at which you can send them back out, or else you'd fill up/buffer.

If your repeaters are actually switches, this manifests as whether you occasionally drop packets on a full link with uncongested switching fabric. Think two switches with a 10G port and 8 1G ports each used to compress 8 long cables into one (say, via vlan-tagging based on which of the 8 ports).