3Com 4500 PWR 26-Port Configuration Manual page 539

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Assured forwarding (AF) class: This class is further divided into four subclasses (AF1/2/3/4) and a

subclass is further divided into three drop priorities, so the AF service level can be segmented. The

QoS rank of the AF class is lower than that of the EF class;

Class selector (CS) cl

Best Effort (BE) class: This class is a special class

class can be degraded to the BE class if it exceed

his class by default.

Table 45-3 Description on DSCP p

DSCP value (decimal)

ass: This class comes from the IP ToS field and includes eight subclasses;

recedence valu

DSCP value (binary)

without any assurance in the CS class. The AF

s the limit. Current IP network traffic belongs to

be (default)

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