Egress Cfhp Queuing - Alcatel-Lucent 7950 Quality Of Service Manual

Egress CFHP Queuing

Egress CFHP Queuing
When CFHP is being performed at egress, queuing of the CFHP output packets is accomplished
through egress queue group queues. The system maintains a special egress queue group template
(policer-output-queues) that is automatically applied to all Ethernet access ports that are up. The
number of queues, queue types (expedite or best-effort), queue parameters and the default
forwarding class mappings to the queues are managed by the template. On each Ethernet port, the
queue parameters may be overridden.
When a SAP egress QoS policy is applied to an Ethernet SAP and the policy contains a forwarding
class mapping to a CFHP child policer, the default behavior for queuing the CFHP output is to use
the egress Ethernet port's policer-output-queues queue group and the forwarding class mapping
within the group to choose the egress queue. Optionally, the SAP egress QoS policy may also
explicitly define which egress queue to use within the default queue group or even map the policer
output to a different, explicitly created queue group on the port.
Any discards performed in the egress queue group queues will be reflected in the egress child
policer's discard counters and reported statistics assuming a discard counter capable stat-mode is
configured for the child policer.
Page 576 7950 XRS Quality of Service Guide