Metering; Re-Marking - Lenovo RackSwitch G8264CS Application Manual

Metering

Re-Marking

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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. All traffic within this Committed
Rate is in‐profile. Additionally, you can 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 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 that traffic
receives.
 Change the 802.1p priority of a packet.
Chapter 7: Access Control Lists
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