Alcatel-Lucent 7950 Quality Of Service Manual page 211

The precedence is evaluated from the lowest to highest value.
Values
fc fc-name — The value given for the fc-name parameter must be one of the predefined forwarding classes
in the system. Specifying the fc-name is optional. When a packet matches the rule the forwarding class
is only overridden when the fc fc-name parameter is defined on the rule. If the packet matches and the
forwarding class is not explicitly defined in the rule, the forwarding class is inherited based on previous
rule matches.
The sub-class-name parameter is optional and used with the fc-name parameter to define a preexisting
sub-class. The fc-name and sub-class-name parameters must be separated by a period (dot). If sub-
class-name does not exist in the context of fc -name, an error will occur. If sub-class-name is removed
using the no fc fc-name.sub-class-name force command, the default-fc command will automatically
drop the sub-class-name and only use fc-name (the parent forwarding class for the sub-class) as the
forwarding class.
Values
Default
priority — The priority parameter overrides the default enqueuing priority for all packets received on an
ingress SAP using this policy that match this rule. Specifying the priority is optional. When a packet
matches the rule the enqueuing priority is only overridden when the priority parameter is defined on the
rule. If the packet matches and priority is not explicitly defined in the rule, the enqueuing priority is
inherited based on previous rule matches.
high — This parameter is used in conjunction with the priority parameter. Setting the enqueuing parameter
to high for a packet increases the likelihood of enqueuing the packet when the ingress queue is
congested. Ingress enqueuing priority only affects ingress SAP queuing. When the packet is placed in a
buffer on the ingress queue, the significance of the enqueuing priority is lost.
low — This parameter is used in conjunction with the priority parameter. Setting the enqueuing parameter
to low for a packet decreases the likelihood of enqueuing the packet when the ingress queue is
congested. Ingress enqueuing priority only affects ingress SAP queuing. When the packet is placed in a
buffer on the ingress queue, the significance of the enqueuing priority is lost.
Default
Values
prec
Syntax prec ip-prec-value fc fc-name [profile {in | out}]
no prec ip-prec-value
Context config>qos>sap-egress
Description
This command defines a specific IP precedence value that must be matched to perform the associated
7950 XRS Quality of Service Guide
0 — 7
fc: class[.sub-class]
class: be, l2, af, l1, h2, ef, h1, nc
sub-class: 29 characters max
Inherit (When fc is not defined, the rule preserves the previous forwarding class of the
packet.)
Inherit (When priority is not defined, the rule preserves the previous enqueuing priority of
the packet.)
high, low
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