Inalp Networks SmartWare Release 2.10, Руководство по настройке программного обеспечения

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Ethernet Port Configuration 107
14.8 Configuring Layer 2 CoS to Service Class Mapping
for an Ethernet Port
To enable real-time and delay sensitive services such as VoIP traffic to be transported across the
network, the SmartWare application software supports the delivery of Quality of Service (QoS)
information in the ToS (Type of Service) field. This is an eight-bit field, the second field in the IP
header packet. To define the Class of Service (CoS) to service class mapping the
cos command is
used, with one of the following arguments:
• default Default service class when no Layer 2 CoS present
• rx-map Receive mapping table - Layer 2 CoS to service class mapping
• tx-map Transmit mapping table - Service class to Layer 2 CoS mapping
Procedure
To change layer 2 CoS to service class mapping
Mode
Configure
Command Purpose
Step 1 node (cfg)#port ethernet slot port
Enters Ethernet port configuration mode for the
interface on
slot and port
Step 2 node (prt-eth)[ slot / port ]#cos
{default | rx-map | tx-map }
Selects the layer 2 CoS to service class mapping
If the frame format is set to standard, the
cos default command value defines which class of service
has to be used for the data traffic. The command syntax is:
The
cos rx-map and cos tx-map commands above need service class mapping table entries, which
has to be entered as additional command argument. The command syntax is:
• cos rx-map layer 2 class of service value as service class value
•
cos tx-map service class value as layer 2 class of service value
Configuring the class of service map has to be done thus:
1. Configure the class of service map table for the outgoing data traffic. Every provided service
can be mapped to a Class of Service.
2. Configure the class of service map table for the incoming data traffic. Every received Class of
Service can be assigned to a service type
14.9 Adding a Receive Mapping Table Entry
The receive mapping table defines the conversion of receiving Layer 2 CoS to service class value into
a SmartWare-specific service class value. Each conversion is stored as a mapping table entry.
Therefore the receive mapping table consists of several mapping table entries.
Procedure
To add a receive mapping table entry
Mode
Software Configuration Guide Release 2.10, Revision 1.00
Configure