[c-nsp] output rate-limiting not working in 7609

[Jimmy]

Guys,
 
I have encountered rate-limiting issue on CISCO7609 platform.
 
Example is:
 
interface GigabitEthernet1/9
 rate-limit input 310000000 4843750 9687500 conform-action transmit
exceed-action drop
 rate-limit output 310000000 4843750 9687500 conform-action transmit
exceed-action drop  -------> NOT WORKING
 
The output rate-limiting is not working. The traffic still can go above 310M
and can hit 1G.
I have created SR with cisco. They are saying there is no work around for
this except that we use ES20 to use policy-map on the interface.
 
Anyone having the same issue? Any better solution?
 
Cheers,
Jimmy