Manualshelf

Technical data

ManualsBrandsBlade Network Technologies ManualsComputer AccessoriesG8000
101102103104105106107108109110
BLADE OS 5.1 Application Guide
104
Chapter 7: Quality of Service BMD00136, November 2009
ACL Metering and Re-Marking
You can define a profile for the aggregate traffic flowing through the G8000 by configuring a QoS
meter (if desired) and assigning ACL Groups to ports. When you add ACL Groups to a port, make
sure they are ordered correctly in terms of precedence.
Actions taken by an ACL are called In-Profile actions. You can configure additional In-Profile and
Out-of-Profile actions on a port. Data traffic can be metered, and re-marked to ensure that the traffic
flow provides certain levels of service in terms of bandwidth for different types of network traffic.
Metering
QoS metering provides different levels of service to data streams through user-configurable
parameters. A meter is used to measure the traffic stream against a traffic profile, which you create.
Thus, creating meters yields In-Profile and Out-of-Profile traffic for each ACL, as follows:
In-Profile–If there is no meter configured or if the packet conforms to the meter, the packet is
classified as In-Profile.
Out-of-Profile–If a meter is configured and the packet does not conform to the meter (exceeds
the committed rate or maximum burst rate of the meter), the packet is classified as
Out-of-Profile.
Using meters, you set a Committed Rate in Kbps (1000 bits per second in each Kbps). All traffic
within this Committed Rate is In-Profile. Additionally, you set a Maximum Burst Size that specifies
an allowed data burst larger than the Committed Rate for a brief period. These parameters define the
In-Profile traffic.
Meters keep the sorted packets within certain parameters. You can configure a meter on an ACL,
and perform actions on metered traffic, such as packet re-marking.
Re-Marking
Re-marking allows for the treatment of packets to be reset based on new network specifications or
desired levels of service. You can configure the ACL to re-mark a packet as follows:
Change the DSCP value of a packet, used to specify the service level traffic should receive.
Change the 802.1p priority of a packet.