Hitachi GR2000 Series Network Router User Manual


 
Filtering/QoS Information
GR2K-GA-0014 1-131
Ver. 07-02
1.2 Quality of Service (QoS) Objects
This section describes the parameters and configuration commands that define QoS.
QoS control enables transmission of IP packets by priority, with highest-priority
packets transmitted first. The following is a brief description of each component of
the overall QoS control mechanism, with associated configuration commands
displayed for each block.
1. QoS enable/disable
QoS information (qos) specifies whether QoS is functional or nonfunctional.
1.2.1 qos (QoS information)
Figure 1-4 Control Range of QoS Information
2. Transmission control
Transmission control determines the output queue mode, thereby controlling the
precedence of packets on the interface output queue. There are three queue
modes: priority, round-robin, and bandwidth. The QoS queue attribute command
(qos-queue-list) generates interface output queue lists; the QoS interface
command (qos-interface) applies the queue list for each interface.
1.2.2 qos-queue-list
1.2.3 qos-interface
Figure 1-5 Range of QoS Attribute and Qos Interface Control
Interface
(LINE,DLCI, etc.)
Flow Control (input)
Route Search
Transmission Control
Flow Detection
Priority Determination
TOS Rewrite
Contracted Bandwidth
Monitoring
: Control range of this command
Defines using and unusing of each control.
Queue Control
Flow Control (output)
Flow Detection
Priority Determination
TOS Rewrite
Contracted Bandwidth
Monitoring
Sets from qos-queue-list.
Flow Control (input)
Transmission Control
Flow Detection
Sets from qos-interface.
: Control range of this command
Interface
(LINE,DLCI, etc.)
Route Search
Priority Determination
TOS Rewrite
Contracted Bandwidth
Monitoring
Queue Control
Flow Control (output)
Flow Detection
Priority Determination
TOS Rewrite
Contracted Bandwidth
Monitoring