Egress Forwarding Class Override - Alcatel-Lucent 7450 Quality Of Service Manual

Note:
1.
Service ingress QoS policy ID 1 is reserved for the default service ingress policy. The default
policy cannot be deleted or changed.
The default service ingress policy is implicitly applied to all SAPs which do not explicitly
have another service ingress policy assigned. The characteristics of the default policy are
listed in
Characteristic Item
Queues Queue 1
Queue 11
Flows Default Forwarding
Class

Egress Forwarding Class Override

Egress forwarding class override provides additional QoS flexibility by allowing the use of a
different forwarding class at egress than was used at ingress.
The ingress QoS processing classifies traffic into a forwarding class (or sub-class) and by
default the same forwarding class is used for this traffic at the access or network egress. The
ingress forwarding class or sub-class can be overridden so that the traffic uses a different
forwarding class at the egress. This can be configured for the main forwarding classes and for
sub-classes, allowing each to use a different forwarding class at the egress.
Quality of Service Guide
When a SNAP header is present, the LLC header is always set to AA-AA
Table 12.
Table 12: Default Service Ingress Policy ID 1 Definition
Definition
1 (one) queue all unicast traffic:
1 (one) queue for all multipoint traffic:
1 (one) flow defined for all traffic:
• Forward Class: best-effort (be)
• CIR = 0
• PIR = max (line rate)
• MBS, CBS and HP Only = default (values derived from
applicable policy)
• CIR = 0
• PIR = max (line rate)
• MBS, CBS and HP Only = default (values derived from
applicable policy)
• All traffic mapped to best-effort (be) with a low priority
QoS Policies
53