[j-nsp] Shaping per logical VLAN interface

[Chris Kawchuk]

> One guys told me it would be possible to implement a similar behaviour using firewall filter policers (!!??). And the advantage would be the possibility to use the "non-Q cards". 

That would be a "hard policer" (firewall filter per VLAN calling a policer), and is non QoS aware. I dont suggest going down this path, as your end-customers will complain about dropped packets when they send micro-bursts of traffic at line-rate for a fraction of a second. (i.e. bursts are not smoothed, and will likely be dropped by the lease provider enroute to the end-user....)

The class-of-service { shaping-rate xxx; } "shaper" is a true deep buffer queue which will smooth out your traffic (so no unexpected 'hard drops' when it microbursts above 100m), and is QoS aware.

Again, you will need the Q/EQ (I/Q chips or Trio Chip) .. cards on the MX.

- CK.