Traffic Shaping for inbound traffic

[abaghir]

Geanelmen,

We have configured traffic shaping on our router for limiting internet traffic for our customers:

interface FastEthernet0/0.11

encapsulation dot1Q 11

ip address x.x.x.x x.x.x.x

traffic-shape rate 256000 7936 7936 1000

after checking the bandwidth graph for this customer we found that the shaping is working fine for the outbound traffic only but for inboung traffic the customer is able to excedd...

Please advice what could be the cause of that?

Thank you,

[scottmac]

Traffic shaping only works from the source. there is no way (other than policing - i.e., discard) to shape through the cloud.

If you tried to pace the traffic through the cloud, it's got to be buffered somewhere, causing latency, and ultimately discarded frames after the buffers fill.

Policing allows the traffic through until some threshold occurs (traditional frame = DE set at Bc, discard at Be), then the traffic is dropped.

FWIW

Scott

[attrgautam]

Shaping is a mechanism of buffering your traffic rather than dropping your packets. But it is applicable only on outbound interfaces as buffering and queuing happens only on outbound interfaces. There is no queuing on inbound interfaces except on GSRs. Hence the best way to restrict is to police (CAR)

HTH