Network Technologies DVB-ASI to IP user manual Layer 2 priority, ASI-IP-GTW Configuration

ASI-IP-GTW User's Manual

1.1.1.37 ASI-IP-GTW Configuration

The number entered into the Type of service (TOS) field on

ASI-IP-GTW IP TX configuration menu defines all 8 bits. The value used should be in accordance with traffic engineering policy of network and should be in the range from 0 to 255.

12.3 Layer 2 priority

Prioritisation can also be supported at layer 2 for the case when VLAN tags. The 802.1q VLAN tag has 3 bits for setting the Class of Service (COS). The operation is further defined in 802.1p. The COS bits will be handled in the same ways as diff-serve or precedence bits with regard to packet classification in the network

1.1.1.38 ASI-IP-GTW Configuration

The COS priority is entered on the VLAN configuration tab on the

ASI-IP-GTW IP TX configuration menu, in the field named VLAN Priority. A value in the range from 0 to 7 should be inserted. This value will be directly transferred to 3 user priority bits in the VLAN header.

More information on quality of service issues and configuration can be found in the literature e.g. router configuration guides.

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