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Catalyst 6500 Series Switch Software Configuration Guide—Release 8.7
OL-8978-04
Chapter 52 Configuring QoS
Understanding How QoS Works
These sections describe the classification criteria that can be specified in a named ACL:
• IP ACE Layer 3 Classification Criteria, page 52-18
• IP ACE Layer 4 Protocol Classification Criteria, page 52-18
• IP ACE Layer 4 TCP Classification Criteria, page 52-19
• IP ACE Layer 4 UDP Classification Criteria, page 52-19
• IP ACE Layer 4 ICMP Classification Criteria, page 52-19
• IP ACE Layer 4 IGMP Classification Criteria, page 52-21
• IPX ACE Classification Criteria, page 52-21
• MAC ACE Layer 2 Classification Criteria, page 52-21
IP ACE Layer 3 Classification Criteria
You can create the IP ACEs that match the traffic with the specific Layer 3 values by including these
Layer 3 parameters (see the “Named IP ACLs” section on page 52-46):
• IP source address and mask, entered as specific values or with the any keyword or with the host
keyword and a host address.
• IP destination address and mask, entered as specific values or with the any keyword or with the host
keyword and a host address.
• DSCP value (0–63) or IP precedence that is specified with a numeric value (0–7) or these keywords:
–
Network (IP precedence 7)
–
Internet (IP precedence 6)
–
Critical (IP precedence 5)
–
Flash-override (IP precedence 4)
–
Flash (IP precedence 3)
–
Immediate (IP precedence 2)
–
Priority (IP precedence 1)
–
Routine (IP precedence 0)
Note The IP ACEs that do not include a DSCP or IP precedence value parameter match all DSCP or IP
precedence values.
IP ACE Layer 4 Protocol Classification Criteria
You can create the IP ACEs that match the specific Layer 4 protocol traffic by including a Layer 4
protocol parameter (see the “IP ACLs for Other Layer 4 Protocols” section on page 52-49). You can
specify the protocol numerically (0–255) or with these keywords: ahp (51), eigrp (88), esp (50),
gre (47), igrp (9), icmp (1), igmp (2), igrp (9), ip (0), ipinip (4), nos (94), ospf (89), pcp (108),
pim (103), tcp (6), or udp (17).
Note The IP ACEs that do not include a Layer 4 protocol parameter or that include the ip keyword match all
IP traffic.
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