3Com SuperStack 4 Configuration Manual page 206

218 C 8: ACL C
HAPTER
Setting Traffic Limit
Setting Line Limit
Relabeling Priority Level
ONFIGURATION
Table 241 Configure the Queue Scheduling Algorithm
Operation
Configure the queue
scheduling algorithm
Restore the default
queue scheduling
algorithm
By default, the Switch uses the WRR algorithm.
For details about the command, refer to the Command Reference Manual.
Traffic limit refers to rate limit based on traffic. If the traffic threshold is exceeded,
corresponding measures will be taken, for example, dropping the excessive
packets or re-defining their priority levels.
Perform the following configurations in the Ethernet Port View.
Table 242 Setting Traffic Limit
Operation
Set traffic limit
Remove traffic
limit
You should first define an ACL before this configuration task.
The granularity of traffic limit is 64kbps. If the target-rate user input is in ( N*64,
(N+1)*64], in which N is a natural number, Switch automaticaly sets (N+1)*64 as
the parameter value.
This configuration achieves rate control for those packets that match the ACL. If
the traffic rate threshold is exceeded, corresponding measures will be taken, for
example, dropping excessive packets.
Line limit refers to rate limit based on the port, that is, limiting the total rate at the
port. The granularity of line rate is 64 kbps.
Perform the following configurations in the Ethernet Port View.
Table 243 Setting Line Rate
Operation
Set line limit
Remove line limit
This configuration re-labels priority level for the packets that match ACL. The new
priority label can be put in the priority domain in the header.
Command
queue-scheduler {
queue2_weight queue3_weight queue4_weight
queue5_weight queue6_weight queue7_weight
queue8_weight
}
undo queue-scheduler
Command
traffic-limit inbound { ip-group
rule [ link-group acl_number
link-group acl_number
exceed action ]
undo traffic-limit inbound {
rule
rule [ link-group
acl_number
link-group
Command
line-rate outbound
undo line-rate outbound
wrr queue1_weight
acl_number
rule rule ] ] |
[ rule rule ] } target_rate
acl-number
ip-group
acl_number rule
rule
rule
[ rule ] }
target_rate
[ rule
[
[
] ] |