Supermicro SSE-G2252 User Manual page 972

SSE-G2252/SSE-G2252P Switches User's Manual
conform-action - Action to take when rate is within the CIR and BC. (There are
enough tokens in bucket BC to service the packet, packet is set green).
exceed-action - Action to take when rate exceeds the CIR and BC but is within the
BE. (There are enough tokens in bucket BE to service the packet, the packet is set
yellow.)
violate-action - Action to take when rate exceeds the BE. (There are not enough
tokens in bucket BE to service the packet, the packet is set red.)
transmit - Transmits without taking any action.
drop - Drops packet as required by exceed-action or violate-action.
new-dscp - Differentiated Service Code Point (DSCP) value. (Range: 0-63)
Default Setting
None
Command Mode
Policy Map Class Configuration
Command Usage
• You can configure up to 16 policers (i.e., class maps) for ingress ports.
• The committed-rate cannot exceed the configured interface speed, and the
committed-burst and excess-burst cannot exceed 16 Mbytes.
• The srTCM as defined in RFC 2697 meters a traffic stream and processes its
packets according to three traffic parameters – Committed Information Rate (CIR),
Committed Burst Size (BC), and Excess Burst Size (BE).
• The PHB label is composed of five bits, three bits for per-hop behavior, and two bits
for the color scheme used to control queue congestion. A packet is marked green if
it doesn't exceed the CIR and BC, yellow if it does exceed the CIR and BC, but not
the BE, and red otherwise.
• The meter operates in one of two modes. In the color-blind mode, the meter
assumes that the packet stream is uncolored. In color-aware mode the meter
assumes that some preceding entity has pre-colored the incoming packet stream so
that each packet is either green, yellow, or red. The marker (re)colors an IP packet
according to the results of the meter. The color is coded in the DS field [RFC 2474]
of the packet.
• The behavior of the meter is specified in terms of its mode and two token buckets, C
and E, which both share the common rate CIR. The maximum size of the token
bucket C is BC and the maximum size of the token bucket E is BE.
The token buckets C and E are initially full, that is, the token count Tc(0) = BC and
the token count Te(0) = BE. Thereafter, the token counts Tc and Te are updated CIR
times per second as follows:
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