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C
HAPTER
 19: VLAN-ACL C
ONFIGURATION
 C
OMMANDS
system-index index: Specifies the system index value of the rule. Normally, an 
applied rule is assigned a globally unique index value automatically for being 
indexed. You can also specify the index value for the rule, but this value may 
change while the system is running. In general, you are not recommended to 
specify this parameter manually.
tc-index index: The traffic control index. If the same index is configured under 
different flow rules when you configure the traffic policing, the total traffic of all 
these flows will be limited by the configured flow policing parameters. For 
example, the cir value of the flow of match rule 1 is configured to be 10kbps, and 
that of match rule 2 is configured to be 10kbps. The tc-index values of the two 
rules are the same at the same time. Then the sum of the average rate of the flow 
matching rule 1 and the flow matching rule 2 will be limited to 10kbps.
traffic-index traffic index: Traffic index value. Quote the traffic parameters 
through traffic-index. These traffic parameters are configured with the 
traffic-params command.
When you specifies the same tc-index value for different flows, the parameter 
settings of the traffic policing action must be consistent completely; otherwise the 
system will prompt errors; when the tc-index is set to 0, it means that the system 
will select the index automatically.
cir: Committed information rate in Kbps.
cbs: Committed burst size in bytes.
ebs: Excess burst size in bytes.
pir: Peak information rate in Kbps.
remark-cos: Sets new 802.1p priority value for the packet according to its 
conform-level and local precedence.
remark-drop-priority: Sets drop precedence value for the packet according to its 
conform-level.
remark-policed-service: Sets new service parameters for the packet according to 
its conform-level and DSCP priority value.
exceed: Optional parameter, used to set the action to be taken when traffic 
threshold is exceeded.
forward: Forwards the packet.
drop: Drops the packet.
Description
Use the traffic-limit command to activate ACL flow identification to perform flow 
limit for the matching data flow in the VLAN and perform different actions on the 
packets within the flow limit and those beyond the flow limit.
Use the undo traffic-limit command to undo the flow limit.