Qos Lists - Avaya G250 Administration

Figure 46: Network Security using access control lists
Server
User Workstation
Server

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 G250/G350 sets one or both of the QoS fields in the packet. The following
table shows these QoS fields:
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.
Internal Network
Router
Unwanted Inbound Traffic
Unwanted Inbound Traffic Blocked by
Unwanted Outbound Traffic
Unwanted Outbound Traffic Blocked by
Access Control List
Layer QoS field
2 802.1p
3 DSCP
External Network/Internet
External Network/Internet
Access Control List
Allowed values
0–7
0–63
Policy overview
Foreign Host
Foreign Application
Server
Foreign Network Router
Foreign Foreign
Network Host Network Host Network Host
Issue 1.1 June 2005
Foreign
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