Quality Of Services (Qos); Figure 99. Qos In The Core-E Unit - Alcatel-Lucent 9500 MPR User Manual

2.8.20 Quality Of Services (QoS)

The QoS function inside 9500 MPR-E is the result of a distributed implementation in the switch and Radio
Interface module. Both those QoS functions are properly configured in order to get the wished behavior
on Ethernet flows that will be transmitted towards the Radio.
N.B. Configurations files
To obtain a specific behavior (not obtainable with the WebEML) the configuration files can be
used. The configuration files configure the Ethernet switch inside the Core-E and the FPGA
inside the Modem unit for ODU300 and inside the MPT Access unit for MPT-HC/MPT-MC.
The configuration files are written by using a set of low level commands provisioning in the
proper way different devices of different MPR cards. After an NE reset, the configuration file is
applied, provisioning the Ethernet switch and other devices to implement the desired feature.
The configuration file must be put in the compact flash plugged in Main Core, inside a specific
directory, via FTP.
The application of a new configuration file could cause traffic hits.
The use of the Configuration files is explained in the relevant document "Configuration File
Management".
2.8.20.1 QoS in the Core-E unit
The figure shows an overview of the QoS implementation inside the switch.
The Quality of Service feature of the Ethernet switch provides four internal queues per port to support four
different traffic priorities. Typically the high-priority traffic experiences less delay than that low-priority in
the switch under congested conditions.
For each egress port according to method of QoS classification configured in the switch, the packets are
assigned to each queue.
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Figure 99. QoS in the Core-E unit

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