Configuring Classes Of Service - Siemens RX1500 User Manual

RUGGEDCOM ROX II
User Guide
. Forwarding Phase
Once the CoS of the frame is determined, the frame is forwarded to the egress port, where it is collected into
one of the priority queues according to the assigned CoS.
CoS weighting selects the degree of preferential treatment that is attached to different priority queues. The
ratio of the number of higher CoS to lower CoS frames transmitted can be configured. If desired, the user can
configure lower CoS frames to be transmitted only after all higher CoS frames have been serviced.
The following sections describe how to configure and manage classes of service:
• Section 5.32.1, "Configuring Classes of Service"
• Section 5.32.2, "Managing Priority to CoS Maps"
• Section 5.32.3, "Managing DSCP to CoS Maps"
Section 5.32.1

Configuring Classes of Service

To configure Classes of Service, do the following:
1. Change the mode to Edit Private or Edit Exclusive.
2. Navigate to switch » class-of-service. The CoS form appears.
Figure 798: CoS Form
1. CoS Weighting List
3. Configure the following parameters as required:
Parameter
CoS Weighting
4. If necessary, configure CoS mapping based on either the IEEE 802.1p priority or Differentiated Services (DS)
field set in the IP header for each packet. For more information, refer to
or Section 5.32.3.2, "Adding a
5. Click Commit to save the changes or click Revert All to abort. A confirmation dialog box appears. Click OK
to proceed.
6. Click Exit Transaction or continue making changes.
Configuring Classes of Service
1
Description
Synopsis: 8421, strict
Default: 8421
During traffic bursts, frames queued in the switch pending transmission on a port may
have different Class of Service (CoS) priorities. This parameter specifies the weighting
algorithm for transmitting different priority CoS frames.
DSCP".
Setup and Configuration
Section 5.32.2.2, "Adding a Priority"
Chapter 5
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