Avaya Cajun P580, User Manual, Page: 669 / 770

Document No. 650-100-700, Issue 1 25-9
80-Series QoS
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Use the DiffServ code point
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Mask the three least significant bits of the DSCP. The switch
recognizes the remaining bits as the IP precedence field.
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Replace the existing DSCP with a DSCP that you specify
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Use the layer 2 priority
You can specify the TCP/IP traffic that you want the rule to apply to. The
rule can apply to traffic with a specific:
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IP destination address
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IP source address
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IP Protocol
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Destination TCP or UDP port
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Source TCP or UDP port
The priority that is specified by an ACL takes precedence over all other
priorities. Because of this precedence, the switch determines whether a rule
in an ACL exists for an IP packet in the final stage of classification. If an
ACL exists, the priority associated with the ACL replaces the current
priority of the frame.
For information on how to set a rule in an ACL, see “ Setting Up an ACL
Rule ” later in this chapter.
Using a Default
ACL Rule
By default, the switch classifies packets by their layer 2 priority, if they do
not match an ACL rule. However, you can set up a default ACL rule that the
switch will apply to all packets that do not match any other ACL rules. This
default ACL rule sets a default characteristic, other than the layer 2 priority,
that the switch will use to classify the packets.
For example, if you set up the following ACL rules:
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access-list List1 1 fwd2 10.10.60.0 0.0.0.255
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access-list List1 2 fwd4 10.10.70.0 0.0.0.255
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access-list List1 3 permit use-priority 4 10.10.80.0 0.0.0.255
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access-list List1 4 permit use-priority 6 10.10.90.0 0.0.0.255
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access-list List1 5 fwd1 10.10.100.0 0.0.0.255
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access-list List1 6 fwd4 10.10.110.0 0.0.0.255
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access-list List1 7 fwd7 10.10.120.0 0.0.0.255