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C H A P T E R 10 Quality of Service (QoS)
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IP-Based Traffic Groupings
IP-based traffic groupings are based on any combination of:
• IP source or destination address
• TCP/UDP or other Layer 4 protocol
• TCP/UDP port information
IP-based traffic groupings are defined using access lists (see chapter
16). By supplying a named QoS profile at the end of the access list
command syntax, you can prescribe the bandwidth-management
and priority handling for that traffic grouping. This level of packet
filtering has no negative impact on performance.
MAC-Based Traffic Groupings
You can assign QoS profiles to destination MAC addresses. MAC-
based traffic groupings are configured using this command:
create fdbentry <MAC address> vlan <vlan>
[blackhole | port <portlist> | dynamic qosprofile
<qosprofile>]
Destination Address MAC-based Groupings
• Permanent
• Dynamic
• Blackhole
• Broadcast/unknown rate limiting
Explicit Packet Class of Service Groupings
• DiffServ (IP TOS)
• 802.1p
Physical/Logical Groupings
• Source port
• VLAN
Table 10.5: Traffic Groupings by QoS Mode (continued)
IP Information (Access Lists) Groupings