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Quality of Service: Managing Bandwidth More Effectively
Advanced Classifier-Based QoS
2. Create an IPv4 or IPv6 traffic class using the class command to select the
packets you want to manage.
A traffic class consists of match criteria, which consist of match and ignore
commands.
• match commands define the values that header fields must contain for
a packet to belong to the class and be managed by policy actions.
• ignore commands define the values which, if contained in header
fields, exclude a packet from the policy actions configured for the
class.
Note Be sure to enter match/ignore statements in the precise order in which
you want their criteria to be used to check packets.
The following match criteria are supported in match/ignore statements
for inbound IPv4/IPv6 traffic:
• IP source address (IPv4 and IPv6)
• IP destination address (IPv4 and IPv6)
• Layer 2 802.1Q VLAN ID
• Layer 3 IP protocol
• Layer 3 IP precedence bits
• Layer 3 DSCP codepoint
• Layer 4 TCP/UDP application port
•VLAN ID
Enter one or more match or ignore commands from the class configuration
context to filter traffic and determine the packets on which policy actions
will be performed.
Context: Global configuration
Syntax: [no] class < ipv4 | ipv6 > <classname >
Defines the name of a traffic class and specifies whether a
policy is to be applied to IPv4 or IPv6 packets, where
< classname > is a text string (64 characters maximum).
After you enter the class command, you enter the class
configuration context to specify match criteria. A traffic
class contains a series of match and ignore commands, which
specify the criteria used to classify packets.
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