Command Manual – QoS/ACL
Quidway S8500 Series Routing Switches
Chapter 4 VLAN-ACL Configuration Commands
Huawei Technologies Proprietary
4-5
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
withinin the flow limit and those beyond the flow limit.
Use the
undo
traffic-limit
command to undo the flow limit.
Use the command to perform flow limit on the packets matching the specified ACL (only
available to the rules whose action is
permit
in the ACL).
When the parameter is set, it is required that
cir
<=
pir
,
cbs
<=
ebs.
It is recommended to
set the values of
cbs
and
ebs
100-150 times of the value of
cir
.
The setting of
tc-index
is subject to the following limitations:
z
remark-cos
and
remark-policed-service
cannot be set at the same time for the
same data flow, neither can
remark-drop-priority
and
remark-policed-service
.
z
You need to configure the “DSCP+Conform-level
Æ
Service parameter” mapping
table before configuring the
remark-policed-service
action; you need to
configure the “Local-prec Conform-level
Æ
802.1p priority” mapping
table before configuring the
remark-cos
action. Refer to the
qos control-level,
dscp, local-precedence
command for the descriptions of the two mapping tables.
Example
# Perform flow limit on packets received on the ports in VLAN 2 if they match the permit
rule in ACL3000. Set the CIR to 2000 kbps, the CBS to 2000 bytes and the EBS to 2500
bytes. Drop packets when this threshold is exceeded.
<Quidway> system-view
System View: return to User View with Ctrl+Z.
[Quidway] vlan 2
[Quidway-vlan2] traffic-limit inbound ip-group 3000 200 2000 2500 conform
remark-policed-service exceed drop
4.1.4 traffic-priority
Syntax
traffic-priority
inbound
ip-group
{
acl-number
|
acl-name
} [
rule rule
[
system-index
index
] ] {
auto
|
remark-policed-service
{
trust-dscp | dscp dscp-value
|
untrusted
dscp dscp-value cos cos-value local-precedence local-precedence drop-priority
drop-level
} }
undo traffic-priority
inbound
ip-group
{
acl-number
|
acl-name
} [
rule rule
]
View
VLAN view
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