Alcatel-Lucent 7950 Quality Of Service Manual page 231

Service Ingress QoS Policy Entry Commands
action
Syntax action [fc fc-name] [priority {high | low}][policer policer-id]
no action
Context config>qos>sap-ingress>ip-criteria>entry
config>qos>sap-ingress>mac-criteria>entry
Description
This mandatory command associates the forwarding class or enqueuing priority with specific IP or MAC
criteria entry ID. The action command supports setting the forwarding class parameter to a sub-class.
Packets that meet all match criteria within the entry have their forwarding class and enqueuing priority
overridden based on the parameters included in the action parameters. When the forwarding class is not
specified in the action command syntax, a matching packet preserves (or inherits) the existing forwarding
class derived from earlier matches in the classification hierarchy. When the enqueuing priority is not
specified in the action, a matching packet preserves (or inherits) the existing enqueuing priority derived
from earlier matches in the classification hierarchy.
When a policer is specified in the action, a matching packet is directed to the configured policer instead of
the policer/queue assigned to the forwarding class of the packet.
The action command must be executed for the match criteria to be added to the active list of entries. If the
entry is designed to prevent more explicit (higher entry ID) entries from matching certain packets, the fc fc-
name and match protocol fields should not be defined when executing action. This allows packets matching
the entry to preserve the forwarding class and enqueuing priority derived from previous classification rules.
Each time action is executed on a specific entry ID, the previous entered values for fc fc-name and priority
areoverridden with the newly defined parameters or inherits previous matches when a parameter is omitted.
The no form of the command removes the entry from the active entry list. Removing an entry on a policy
immediately removes the entry from all SAPs using the policy. All previous parameters for the action is lost.
Default
Action specified by the default-fc.
Parameters fc fc-name — The value given for fc fc-name must be one of the predefined forwarding classes in the
system. Specifying the fc fc-name is required. 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.
7950 XRS Quality of Service Guide Page 231