Hi Jose,
You would think so but it’s not the case. Fragmentation only occurs when the packet exceeds the MTU of the outgoing interface.
If you configure a shaper with a Bc that is lower than your packet size then the packet will still be forwarded. What probably happens behind the scenes (I don’t have there are any good debug commands to see this) is that the router probably waits multiple Tcs until the packet can be forwarded. Meanwhile, it’s stored in the buffer.
Rene