3Com corebuilder 3500 Implementation Manual page 491

For the rate limit type receivePort or aggregate, the following:
Service level for nonconforming excess (packets exceeding the rate
limit)
Whether nonconforming excess are loss eligible. The default is yes.
How the rate limit is expressed (percentage of port bandwidth or
KBytes/sec)
Rate-limit value (0 to 65434 Kbytes or 0 to 100 percent).
A burst size in KBytes (16 through 8192, with the default value
dependent on your specified rate limit).
Bridge ports for which you want to enable the specified rate limit
value (specific bridge ports or all bridge ports). If you specify a
subset of available ports, you can enter another rate-limit value for
another set of ports.
For any type of rate limit (and a service level other than drop), any
combination of IEEE 802.1p priority tag values in the range 0 to 7 or
none to apply to forwarded frames. By default, no tags are applied,
unless the associated classifier defines a tag value. In that case, the tag
value from the associated classifier is used for the forwarded frames.
Whether to drop packets used to establish TCP connections. This is a
form of one-way filtering for flow classifiers only. The default is no.
Enable control start and stop times. Similar to how a VCR operates,
this timer allows you to set the desired beginning and ending period
for a control. The default is no.
If you select yes, you set the following:
Input time type such as daily, weekdays, or weekends. You can also
choose a "specific" type that lets you choose an exact day.
One or more classifiers (classifier numbers) that are subject to this
control.
QoS Controls 491