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Precedence class information, and DSCP class information. One QoS policy can be cited by one
or more untrust ports. The QoS policy cannot be deleted and modified when it is cited by one or
more untrust ports.
6. Configure QoS Port
To configure QoS untrust port in fact is that ports select one QoS policy. Following command is
used under PORT RANGE mode for configuring untrust port, and selected policy-id must be
existed and the stauts must be active: qos service-policy <policy-id> for example port 2 and 3,
select Policy 2 to configure untrust port：
Switch(port 2-3)# qos service-policy 2
Switch(port 2-3)# show qos
Fialed configuration for untrust port maybe caused by: the port has been configured with QoS
trust port or QoS untrust port; selected QoS policy is not existed or the status is not active; the
port has been bound with one or more IP addresses. Insufficient RULE of the FFP maybe
caused by: the port has been carried out with ACL filtration or excess data flow classified by QoS.
There are 128 items in RULE of each FFP. Insufficient METER of the FFP maybe caused by
excess classes with bandwidth limitations in QoS policy and more than 63, which is not very
usual. There are 63 items in METER of FFP. There are two or more ACL classes in QoS policy,
each of which is matched with one ACL group, in which there are the same two-filtration
regulations. For the sixth point for example: ACL group 2 configured with 2 regulations：
Switch# access-list 2 permit 192.168.0.0 0.0.0.255
Swtich# access-list 2 permit 192.168.1.0 0.0.0.255
ACL group 3 configured with 1 regulation that is the same with that of ACL group 2
Switch# access-list 3 permit 192.168.0.0 0.0.0.255
QoS class 2 configured as ACL class, ACL group is 2：
Switch# qos class 2 Switch(class-2)# match acl 2
QoS class 3 configured as ACL class, ACL group is 3：
Switch(class-2)# qos class 3
Switch(class-3)# match acl 3
Configure QoS policy 2, choose class 2 and class 3：
Switch(class-3)# qos policy 2
Switch(policy-2)# class 2
Switch(policy-map-class 2)# set dscp 30
Switch(policy-map-class 2)# exit
Switch(policy-2)# class 3
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