Figure 2-1 Working Flow For Traffic Supervision - Zte ZXR10 5900E Series Configuration Manual

ZXR10 5900E Series Configuration Guide (QoS)

Figure 2-1 Working Flow for Traffic Supervision

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Traffic limit
The ZXR10 89 switch supports both Single Rate Three Color Marker (SrTCM)
(RFC2697) arithmetic and the Two Rate Three Color Marker (TrTCM) (RFC2698)
arithmetic. Both arithmetic support the Color-Blind and Color-Aware modes.
The Meter works in two modes. In the Color-Blind mode, it is assumed that the packet
is colourless. In the Color-Aware mode, it is assumed that the packet is colourful.
Packets passing through a switch will be coloured in according with a certain rule
(the information of the packets). The Maker colours the IP packets in the DS domain
according to the Meter result.
The following describes the arithmetic of these three marks.
1. SrTCM
The SrTCM arithmetic is used for the Diffserv traffic conditioner. The SrTCM
arithmetic measures the information stream, and marks the packet according to
the three parameters, including Committed Information Rate (CIR), Committed
Burst Size (CBS), and Excess Burst Size (EBS). These three parameters
correspond to three colours, green, yellow, and red. If a token is obtained
from the EBS token bucket instead of the CBS token bucket, the packet will be
coloured yellow. If the token is still not obtained from the EBS token bucket, the
packet will be coloured red. The red packet will be discarded by default.
2. TrTCM
The TrTCM arithmetic is used for the Diffserv traffic conditioner. The Diffserv
arithmetic measures the IP information stream, and marks the packet according
to four parameters, including Peak Information Rate (PIR), Committed Information
Rate (CIR), CBS, and PBS. If the rate of the packet exceeds the PIR, the packet
will be coloured red. If the rate of the packet exceeds the CIR, it will be coloured
yellow. If the rate the packet does not exceed the CIR, it will be coloured green.
3. ModifyTrTCM
The ModifyTrTCM arithmetic is used for the Diffserv traffic conditioner. The
ModifyTrTCM arithmetic measures the IP information stream, and marks the
packet according to four parameters, including CIR, EIR, CBS, and EBS. If the
packet can obtain a token from the CBS token bucket, it will be coloured yellow.
If it does not obtain a token from the CBS token bucket, it will obtain the token
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