Link scheduler configuration task list
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OnSite Model 3210 User Manual
7 • Link scheduler configuration
At a some point the source traffic-class
default
must be listed. This class must be present, because it defines how
packets, which do not belong to any of the traffic-classes listed in the profile are to be handled. When all listed
“traffic-classes” have “priority” the handling of the remaining traffic is implicitly defined and the “default” sec-
tion can be omitted. Similarly if no scheduling is used i.e. the link scheduler is used for packet marking only
(e.g. setting the TOS byte) the “default” section can also be omitted.
The table below shows the basic syntax of the service-policy profile structure:
Mode:
Configure
Specifying the handling of traffic-classes
Several commands are available to specify what happens to a packet of a specific traffic-class.
Defining fair queuing weight
The command
share
is used with wfq link arbitration to assign the weight to the selected traffic-class. When
defining a number of source classes, the values are relative to each other. It is recommended to split 100—
which can be read as 100%—among all available source classes, e.g. with 20, 30 and 50 as value for the respec-
tive share commands, which represent 20%, 30% and 50%.
Step
Command
Purpose
1
node
(cfg)# profile service-policy
name
Creates a new service policy profile
named name
2
node
(pf-srvpl)[
name
]#rate-limit
value
Limits global interface rate to value in
kbps. Be aware, that the actual rate-
limit on a given interface has to be
defined for reliable operation.
3
node
(pf-srvpl)[
name
]#mode {shaper | wfq}
Sets the arbitration scheme to mode
shaper or weighted fair queuing (wfq).
If not specified wfq is default.
4
node
(pf-srvpl)[
name
]#source {traffic-class | policy}
src-name
Enters source configuration mode for a
traffic-class or a hierarchical lower
level service-policy profile named
src-
name
.
5
node (src)[src-name]…
At this point the necessary commands
used to specify the handling of the traf-
fic-class(es) have to be entered.
6
node (src)[src-name]exit
Leaves the source configuration mode
(optional)
7
node
(pf-srvpl)
[name]
#…
Repeat steps 4 to 6 for all necessary
source classes or lower level service
policy profiles.
8
node(pf-srvpl)[name]#
exit
Leaves the service-policy profile mode
