Supermicro SSE-G2252, User Manual

Page: 241 / 1401

Chapter 11: Quality of Service
Creating QoS Policies
– 247 –
•
Set CoS – Configures the service provided to ingress traffic by
setting an internal CoS value for a matching packet (as specified in
rule settings for a class map). (Range: 0-7)
See Table 10-7, “Default Mapping of CoS/CFI to Internal PHB/Drop
Precedence,” on page 236 ).
•
Set PHB – Configures the service provided to ingress traffic by
setting the internal per-hop behavior for a matching packet (as
specified in rule settings for a class map). (Range: 0-7)
See Table 10-6, “Default Mapping of DSCP Values to Internal PHB/
Drop Values,” on page 234 ).
•
Set IP DSCP – Configures the service provided to ingress traffic by
setting an IP DSCP value for a matching packet (as specified in rule
settings for a class map). (Range: 0-63)
•
Meter – Check this to define the maximum throughput, burst rate, and
the action that results from a policy violation.
•
Meter Mode – Selects one of the following policing methods.
•
Flow (Police Flow) – Defines the committed information rate (CIR,
or maximum throughput), committed burst size (BC, or burst rate),
and the action to take for conforming and non-conforming traffic.
Policing is based on a token bucket, where bucket depth (that is,
the maximum burst before the bucket overflows) is specified by the
“burst” field, and the average rate tokens are removed from the
bucket is by specified by the “rate” option.
•
Committed Information Rate (CIR) – Committed rate in
kilobits per second. (Range: 0-1000000 kbps at a granularity of
64 kbps or maximum port speed, whichever is lower)
The rate cannot exceed the configured interface speed.
•
Committed Burst Size (BC) – Committed burst in bytes.
(Range: 0-16000000 bytes at a granularity of 4k bytes)
The burst size cannot exceed 16 Mbytes.
•
Conform – Specifies that traffic conforming to the maximum
rate (CIR) and committed burst size (BC) will be transmitted
without any change to the DSCP service level.
•
Transmit – Transmits in-conformance traffic without any
change to the DSCP service level.
•
Violate – Specifies whether the traffic that committed
maximum rate (CIR) or burst size (BC) will be dropped or the
DSCP service level will be reduced.
•
Set IP DSCP – Decreases DSCP priority for out of
conformance traffic. (Range: 0-63)