User guide

QOS Meter command reference
iMG/RG Software Reference Manual (Quality of Service)
7-56
See also SCHEDULER LIST PROFILES
SCHEDULER SHOW PROFILE
7.1.6.2.7 SCHEDULER PROFILE SET QUEUE ALD PROFILE
Syntax SCHEDULER PROFILE <name> SET QUEUE {DEFAULT | [1-7]} ALD
PROFILE <GreenProfile> [<YellowProfile> <Red Profile>]
Description This command associates a scheduler profile queue with an Algorithmic Dropper (ALD)
profile. ALD is a congestion control mechanism. The dropper associated with a particu-
lar scheduler profile decided at the time of packet enqueuing whether the packet should
be enqueued in the queue or dropped. The ALD profile is created using the ald add pro-
file command.
Each configured queue can have one of the following ALD algorithms associated with it:
•RED (Random Early Detection); applied if only one (green) ALD profile is config-
ured.
•WRED (Weighted RED); treats packets differently depending on the drop priorities
assigned to packets by the classifier profile set rule droppri command, or assigned by
meter on the basis of metering results. Note that meter always sets the drop prior-
ity in the packet. Green is the lowest drop priority (0), yellow is the medium drop
priority (1) and red is the highest drop priority (2). The WRED algorithm is applied
if three ALD profiles (green, yellow and red; one for each drop priority) are config-
ured.
Note: If the scheduler profile uses the WF2Q+ service discipline, the weight of the queue must be set to a non-
zero value before you can associate an ALD profile. See SCHEDULER PROFILE SET QUEUE
WEIGHT
Options The following table gives the range of values for each option that can be specified with
this command and a default value for each option (if applicable).
Option Description Default Value
name An existing profile. To display names, use the
SCHEDULER LIST PROFILES command.
N/A
default
The default priority value. See the
SCHEDULER
ADD PROFILE
command description.
N/A