[c-nsp] QOS on ME3600 (service instance)

[Lukas Tribus]

Hi,


> It "appears" to work - i.e. with no policy applied:
>
> #ping vrf TEST3 10.10.1.1 size 1500 df-bit repeat 100 <- This is to an 1841 connected to port Gig0/3 on the ME
> Type escape sequence to abort.
> Sending 100, 1500-byte ICMP Echos to 10.10.1.1, timeout is 2 seconds:
> Packet sent with the DF bit set
> !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
> !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
> Success rate is 100 percent (100/100), round-trip min/avg/max = 1/2/4 ms
>
> Same test, with policy-map applied to service instance:
>
> ping vrf TEST3 10.10.1.1 size 1500 df-bit repeat 100
> Packet sent with the DF bit set
> !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
> !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
> Success rate is 100 percent (100/100), round-trip min/avg/max = 1/118/128 ms
>
> i.e. Latency increases, so I can only assume the shaping is working....I have tried reducing
> the shaping to 1000 (1kb), and see packet-loss...remove service-policy, and latency returns
> to normal, and no loss.
> 
> Is this a cosmetic bug, or is there another command that will show drops?

ping vrf TEST3 10.10.1.1 size 1500 df-bit repeat 5000 timeout 0


A ping with a non-zero timeout will wait for the replay OR timeout, which
makes it hard to see any shaping related drops.




Regards,

Lukas