QoS lists
You can use QoS lists to change the DSCP and Ethernet IEEE 802.1p CoS fields in packets.
Changing these fields adjusts the priority of packets meeting the criteria of the QoS list. DSCP
values are mapped to a CoS value. Rules can be created determining the priority behavior of
either individual DSCP values or CoS values, and can be based on specific values or groups
of IP addresses, protocols, ports, IP fragments, or DSCP values. When a packet matches a
rule on the QoS list, the Branch Gateway sets one or both of the QoS fields in the packet. See
Allowed values on QoS fields on page 560.
Each QoS list also includes a DSCP table. The DSCP table enables you to set one or both of
the QoS fields in a packet, based on the previous value of the DSCP field in the packet.
QoS list parts
Rule list: A list of filtering rules and actions for the Branch Gateway to take when a packet
matches the rule. Match actions on this list are pointers to the composite operation table.
Actions (composite operation table): A table that describes actions to be performed when
a packet matches a rule. The table includes pre-defined actions, such as permit and deny. You
can configure more complex rules. Refer to
Composite operations on page 574.
DSCP map: A table that contains DSCP code points and match action pairs. Match actions
are pointers to the composite operation table. Refer to DSCP table on page 577.
Policy lists
Administering Avaya G430 Branch Gateway October 2013 559
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