[rbak-nsp] Odd QoS Rate Maximum Issue

[support at ecn.net.au]

Hi all

I am hoping someone may be able to assist with an odd QoS Rate maximum issue we’ve hit.

On 1 particular VLAN it appears the QoS policy is being completely ignored, we can apply the same policy to any other circuit and the policy works fine, any thoughts? Config is as follows:

SmartEdge 100 - SEOS-6.1.5.7-Release


qos congestion-avoidance-map lnsACME2 pwfq
queue 0 depth 1024
queue 1 depth 3192
qos policy lnsACME2 pwfq
! max queue depth 4064 and max queue number 8
rate maximum 140000
num-queues 2
congestion-map lnsACME2
queue 0 priority 0 weight 100
queue 1 priority 1 weight 100


dot1q pvc 14
bind interface toACMELNS lnsACME
qos policy queuing lnsACME2



In theory the circuit with vlan 14 should now be limited to 140000 kbps, and I would think the queues defined with the congestion map should fill (and maybe even get some drops on the queues worst case).
However

Doing a “show cir count 2/1 vlan-id 14 det” shows that the transmit/second is well above the 140000kbps (17920000) at 19721788.
As such we’re seeing odd packet loss on that link (expected) as the far end is doing policing to discard packets over 150Mbit.

Circuit: 2/1 vlan-id 14
----------------------------------------------------------
Policy Name : lnsACME2
Policy Type : pwfq
Hierarchical Type : None
Rate-max (kbps) : 140000 Rate Source : local
..
Circuit: 2/1 vlan-id 14, Internal id: 1/2/175, Encap: ether-dot1q
Packets Bytes
-------------------------------------------------------------------------------
Receive : 265745043 Receive : 91125480966
Receive/Second : 15936.73 Receive/Second : 3865300.36
Transmit : 2707057339 Transmit : 2485601132249
Xmits/Queue Xmits/Queue
0 : 4775055 0 : 4105618797
1 : 14706271 1 : 15297898669
..
..
Xmit Q Deleted : 2687576013 Xmit Q Deleted : 2466197614783
Transmit/Second : 19832.72 Transmit/Second : 19721788.78
...
...
Tail Drops/Queue Tail Drops/Queue
0 : 0 0 : 0
1 : 0 1 : 0
2 : 0 2 : 0
3 : 0 3 : 0
4 : 0 4 : 0
5 : 0 5 : 0
6 : 0 6 : 0
7 : 0 7 : 0


Any ideas?

Regards

Matt
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