Access Queue Group Statistics - Alcatel-Lucent 7950 Quality Of Service Manual

Access SAP Forwarding Class Based Redirection

Access Queue Group Statistics

Port Queue Groups
When a forwarding class is redirected to a ingress or egress port queue group queue, the packets
sent to the queue are statistically tracked by a set of counters associated with the queue group
queue and not with any of the counters associated with the SAP.
This means that it is not possible to perform accounting within a queue group based on the source
SAPs feeding packets to the queue. The statistics associated with the SAP will not reflect packets
redirected to a port queue group queue.
The set of statistics per queue are eligible for collection in a similar manner as SAP queues. The
collect-stats command enables or disables statistics collection in to a billing file based on the
accounting policy applied to the queue group.
Forwarding Plane Queue Groups
When a forwarding class is redirected to a forwarding plane queue group queue or policer, the
packets sent to the queue or policer are statistically tracked by a set of counters associated with the
queue group queue/policer and not with any of the counters associated with the SAP.
This means that it is not possible to perform accounting within a queue group based on the source
SAPs feeding packets to the queue. That is, the statistics associated with the SAP will not include
packets redirected to a queue group queue.
Note that if the user enables the packet-byte-offset {add bytes | subtract bytes} option under the
ingress queue-group policer, the byte counters of that policer will reflect the adjusted packet size.
The set of statistics per queue are eligible for collection in a similar manner to SAP queues. The
collect-stats command enables or disables statistics collection in to a billing file based on the
accounting policy applied to the queue group.
Page 324 7950 XRS Quality of Service Guide