I have this ongoing issues unresolved for somedays now. Got two sites connected by MetroE link and each side equipped with C2811 router witch HWIC-4ESW.

Under full load on the F0/0/0 port (load 253/255) im starting to see ping drops.Needless to say Fa0/0/0 is configured with vl100 to assign a WAN IP.

But under low traffic situation(load at 100/255), the ping are 100% success. But looking at sh int f0/0/0 im not seeing any packet drops on full load of 250/255

Another point to meniton,currently class based modular QoS with shaping is configured on the VLAN interfaces.

But same site before migration using WIC-1T, worked just fine even at full load of 254/255, without drops.

Is there anything interms of configuration...im missing here...any commands ..any sort of help is much appreciated.

Tks.