User manual

Chapter 4 - Layer 3 Command Set - IP Networking Qm Command (QoS Configuration)
Alvarion BreezeNET B130/B300 GigE 112 Operational User Manual
Description:
qm classL max=N
This command creates a service class #L. It is used for dynamic bandwidth
allocation between different channels. The "max = N" option defines the total
bandwidth of the class that will be limited to a given value (thousands bps).
To delete the class:
qm classL clear
You can create a hierarchy of service classes where a "parent" class is used for the
dynamic allocation of its bandwidth between its subsidiary classes. To do this
[ceil=N] [ceilprio=N] [parent=N] parameters are used. The use of [ceil=N]
[ceilprio=N] parameters is the same as in qm chN command. [parent=N]
parameter defines "parent" class for the current class, where N - is a value of a
"parent" class.
qm chN [max=N[%]|0] [ceil=N|[%]|0] [ceilprio=N|0]
[latency=N|0] [pri=P] [[no]strict]] [pps=N|0] [to=addr]
[vlan=N|-1] [dscp=N|-1] [dot1p=N|-1] [classL] / clear
This command defines a logical channel #N (N=1…200) with properties specified
by one or more command options as follows:
 max=N[%] sets maximum data rate for the channel in Kbit/s. Value range:
from 10 to 100000. It is also possible to set it in per cent (max=N%) of the
parent class' total bandwidth. If set to 0, cancels any speed limitation for the
channel.
 classL assigns service class #L to the channel. This additional parameter
relates to the above defined data rate limitation, making it flexible: when the
total bandwidth of this service class is not fully used, the extra bandwidth may
be granted to such channel, thus exceeding its predefined data rate limit, up
to full load of the class. When there are several such channels competing for
extra bandwidth, it is equally divided between them. (See examples below).
 ceil=N[%] determines how much of the total bandwidth of the parent class L
can be used by the channel when the class bandwidth is not used entirely.
Measured either in kilobits per second or per cent (ceil=N%) of the parents
class' total bandwidth. To disable the parameter set its value to 0.
 ceilprio=N sets priority for the channel that is used when interface bandwidth
can be used by several channels. There are 17 priorities from 0 (the highest) to