Configuring Service Group Allocation Rules - Huawei Quidway S3500 Series Operation Manual

Operation Manual - QoS/ACL
Quidway S3500 Series Ethernet Switches
Configuring queue scheduling
Configuring traffic mirror
Configuring port mirror
Configuring traffic statistics
Before you perform the QoS configuration tasks listed above, you should define ACLs.
You can use packet filter simply by activating the ACL for it, which is beyond the scope
of this chapter.
Only the rules including these elements defined in template can be sent to target
hardware and referenced for such QoS functions as packet filtering, traffic policing,
priority re-labeling. Otherwise, the rules cannot be activated on the hardware. The ACL
combined mode is following.
Table 2-29 Combined Mode of ACL
Combined Mode
All rules in IP ACL
Only one rule in IP ACL
All rules in Link ACL
Only one rule in Link ACL
All rules in IP ACL and
one rule in Link ACL
One rule in IP ACL and
one rule in Link ACL
One rule in IP ACL and
all rules in Link ACL

2.4.1 Configuring Service Group Allocation Rules

QoS that applies on the switches is set up on the basis of service group. Each service
group includes a set of QoS related parameters including 802.1p precedence (CoS
precedence), DSCP precedence, local precedence (which is assigned to packets and
has local significance), and conform-level (also called drop precedence due to its
bearing on packet drop decision).
Upon the receipt of a packet, the switch automatically allocates a set of service
parameters to the packet based on a particular rule. First, the switch looks up the CoS
to drop-precedence and CoS to local-precedence maps for the conform-level and
local-precedence of the packet based on its 802.1p precedence. Default settings of
these maps are available for you, yet you are allowed to configure them as needed. If
no local-precedence is available for the packet, the switch takes the default
local-precedence assigned to the packet receiving port as the local-precedence of the
packet.
ip-group { acl-number | acl-name }
ip-group { acl-number | acl-name } rule rule
link-group { acl-number | acl-name }
link-group { acl-number | acl-name } rule rule
ip-group { acl-number | acl-name } link-group
{ acl-number | acl-name } rule rule
ip-group { acl-number | acl-name } rule rule link-group
{ acl-number | acl-name } rule rule
ip-group { acl-number | acl-name } rule rule link-group
{ acl-number | acl-name }
Huawei Technologies Proprietary
2-20
Chapter 2 QoS Configuration
Value