per connection TCP traffic shaping

We are looking into a scalable way to configure a linux router to shape traffic
on outgoing connections(upto 10000) to (100Kb/s - 1Mb/s) over a 10Gb link.

Can someone point to any scripts that can be used to implement
per-connection traffic shaping using 'tc' and 'iptables'?

Can this be done without having to create a separate tc class/filter for each
connection?

Thanks
Sridhar