Traffic shaping went wrong

[lucasrca]

Guys,

I have a pretty complicated scenario here.

We have a 20 Mbit / 20 Mbit MPLS link to the web.

A backbone to some branches through a HP router using MPLS too (20 Mbit / 20 Mbit).

This backbone access the internet through our WAN.

My topology looks like this:

6 VLANs (DMZ, VIDs 1170 (default), 1180, 1190, 1200, 1210)).
1 WAN
1 BCB (I can't define this as WAN or LAN).

My question is: should I consider the backbone (BCB) to the branches as a WAN connection on the traffic shaping?
Or should I consider the BCB as a LAN?

Through the BCB, we have 12 other MPLS networks (12 cities), with 20 Mbit / 20 Mbit each.

So, the BCB (backbone to the branches) is a WAN or LAN? Or none???

Thanks. Best regards!

Lucas