3com S7906E 설치 설명서

다운로드
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4-5 
Figure 4-4 Line rate implementation 
 
 
In the token bucket approach to traffic control, bursty traffic can be transmitted so long as enough 
tokens are available in the token bucket; if tokens are inadequate, packets cannot be transmitted until 
the required number of tokens are generated in the token bucket. Thus, traffic rate is restricted to the 
rate for generating tokens, thus limiting traffic rate and allowing bursty traffic. 
Line rate can only limit the total traffic rate on a physical port, while traffic policing can limit the rate of a 
flow on a port. To limit the rate of all the packets on a port, using line rate is easier.  
Configuring Traffic Policing 
Configuration Procedure 
Follow these steps to configure traffic policing: 
To do… 
Use the command… 
Remarks 
Enter system view 
system-view 
— 
Create a class and enter 
class view 
traffic classifier tcl-name [ operator 
and | or } ] 
— 
Configure the match 
criteria 
if-match match-criteria 
— 
Exit class view 
quit 
— 
Create a behavior and 
enter behavior view 
traffic behavior behavior-name 
— 
Configure a traffic policing 
action 
car cir committed-information-rate 
cbs committed-burst-size [ ebs 
excess-burst-size ] ] [ pir 
peak-information-rate ] [ green action 
yellow action ] [ red action ] 
Required  
 
On SC, SA, and EA 
LPUs, the granularity of 
traffic policing is 64 kbps. 
On SD and EB LPUs, the 
granularity of traffic 
policing is 8 kbps.  
Exit behavior view 
quit 
—