Zte ZXR10 2900E series Configuration Manual page 102

ZXR10 2900E Series Configuration Guide
For the data packet QoS handling method on the network edge device on the access side,
there are the following conditions:
l
The switch can select whether to trust the packet and which fields of the packet, such
as UP or DSCP, can be trusted when receiving the packet. It allocates the QoS service
according to trusted fields.
l
When the data packet received by the switch is not trusted, the QoS service is
allocated according to the related QoS configuration on the receiving port.
l
QoS service defines the internal processing method and external processing method
of the packet.
processing method includes modifying the 802.1p user priority of a data packet or
the DSCP domain of an IP header.
For the following network core device, implement the service similar to the previous service
according to 802.1p of the packet or DSCP mark. This way, a set of end-to-end QoS
service is provided. When the flow exceeds the configuration, the network device can
modify the QoS service level such as dropping packets or allocating the lower-level QoS
service.
When a data packet enters the port, the switch will perform the QoS initialization mark
which mainly includes the initialization of TC QoS parameters.
In the direction of switch egress, the QoS is used to put the packet into the suitable queue
according to marked TC and perform the corresponding queue scheduling algorithm and
congestion control algorithm according to the current queue configuration and modify it
according to 802.1p user priority or IP DSCP field of the data packet.
Configuring QoS
The QoS configurations on the ZXR10 2900E includes global-based QoS configuration
and port-based QoS configuration. Part of QoS configuration is related to ACL. The QoS
configuration includes the following commands:
Command
zte(cfg)#
zte(cfg)#
{dscp-priority | port-profile | user-priority}
zte(cfg)#
| remark {dscp-priority | user-priority}}{enable | disable}
zte(cfg)#
<0-63> to <0-63>
zte(cfg)#
qos-profile <0-127>
zte(cfg)#
<0-7>| dscp-to-profile <0-63>} qos-profile <0-127>
SJ-20130731155059-002|2013-11-27 (R1.0)
The internal processing method includes TC, and the external
set qos priority-mapping port <1-28> default-up <0-7>
set qos priority-mapping port <1-28> trust-mode
set qos priority-mapping port <1-28>{remapping-dscp
set qos priority-mapping qos-profile dscp-to-dscp
set qos priority-mapping port <1-28> port-to-profile
set qos priority-mapping qos-profile {up-to-profile
5-54
ZTE Proprietary and Confidential
Function
Sets the default port UP priority.
Sets the port trusted mode.
Sets packet UP/DSCP
remark/remapping based on
the port.
Sets the mapping relation between
DSCPs .
Sets the mapping relation between
the port and the QoS profile.
Sets the mapping relation between
the DSCP/UP and the QoS profile.