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S3700HI Ethernet Switches
Configuration Guide - QoS
l
Issue 01 (2012-03-15)
NOTE
If the value of vlan vlan-id is specified, VLAN-based traffic policing is configured. Traffic
policing is performed for the traffic matching an ACL rule on all interfaces in the VLAN.
If the value of vlan vlan-id is not specified, the statistics on the traffic matching an ACL rule
are collected on all interfaces of the device.
The colors of packets can be defined in traffic policing:
l When the size of a packet is less than the value of cbs-value, the packet is colored green.
l When the size of a packet is greater than or equal to the value of cbs-value but less than
the value of pbs-value, the packet is colored yellow.
l When the size of a packet is greater than or equal to the value of pbs-value, the packet is
colored red.
By default, green packets and yellow packets are allowed to pass through, and red packets are
discarded.
When the traffic-limit command and the traffic-filter (interface view) or traffic-filter
(system view) command are used simultaneously, and the same ACL rule is associated:
l If the deny action is configured in the ACL rule, the traffic-limit command does not take
effect.
l If the permit action is configured in the ACL rule, the traffic-limit command takes effect.
A Layer 2 ACL and a Layer 3 ACL can be set in the traffic-limit command simultaneously.
The Layer 3 ACL and its rules can be configured only after the Layer 2 ACL and its rules are
configured. The Layer 2 ACL number ranges from 4000 to 4999 and the Layer 3 ACL number
ranges from 2000 to 2999 or 3000 to 3999.
To configure both Layer 2 ACLs and Layer 3 ACLs on an inbound interface of a switch, use
the following command:
traffic-limit [ vlan vlan-id ] inbound acl { l2-acl | name acl-name } [ rule rule-id ] acl { bas-
acl | adv-acl | name acl-name } [ rule rule-id ] cir cir-value [ pir pir-value ] [ cbs cbs-value
pbs pbs-value ] [ [ green { drop | pass [ remark-8021p 8021p-value | remark-dscp dscp-
value ] } ] [ yellow { drop | pass [ remark-8021p 8021p-value | remark-dscp dscp-value ] } ]
[ red { drop | pass [ remark-8021p 8021p-value | remark-dscp dscp-value ] } ] ]
To configure both Layer 2 ACLs and Layer 3 ACLs on an outbound of a switch, use the
following command:traffic-limit [ vlan vlan-id ] outbound acl { l2-acl | name acl-name }
[ rule rule-id ] acl { bas-acl | adv-acl | name acl-name } [ rule rule-id ] cir cir-value [ pir pir-
value ] [ cbs cbs-value pbs pbs-value ] [ [ green { drop | pass [ remark-8021p 8021p-value
| remark-dscp dscp-value ] } ] [ yellow { drop | pass [ remark-8021p 8021p-value | remark-
dscp dscp-value ] } ] [ red { drop | pass [ remark-8021p 8021p-value | remark-dscp dscp-
value ] } ] ]
Configuring traffic policing on an interface
1.
Run:
system-view
The system view is displayed.
2.
Run:
interface interface-type interface-number
The interface view is displayed.
Or, run:
interface eth-trunktrunk-id
The Eth-Trunk interface view is displayed.
3.
Run:
traffic-limit inbound { acl { [ ipv6 ] { bas-acl | adv-acl | name acl-
name } | l2-acl | user-acl } } [ rule rule-id ] cir cir-value [ pir pir-
value ] [ cbs cbs-value pbs pbs-value ] [ [ green { drop | pass
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Copyright © Huawei Technologies Co., Ltd.
1 Class-based QoS Configuration
29
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