Limitations on CoS Shapers for Tunnel Interfaces

On a J-series Services Router, when defining a CoS shaping rate on a tunnel interface, be aware of the following restrictions:

The shaping rate on the tunnel interface must be less than that of the physical egress interface.
The shaping rate only measures the packet size that includes the Layer 3 packet with GRE or IP-IP encapsulation. The Layer 2 encapsulation added by the physical interface is not factored into the shaping rate measurement.
The CoS behavior works as expected only when the physical interface carries the shaped GRE or IP-IP tunnel traffic alone. If physical interface carries other traffic, thereby lowering the available bandwidth for tunnel interface traffic, the CoS features do not work as expected.
You cannot configure a logical interface shaper and a virtual circuit shaper simultaneously on the router. If virtual circuit shaping is desired, do not define a logical interface shaper. Instead, define a shaping rate for all the virtual circuits.