Quality of Service Guide QoS and QoS Policies
Edition: 01 3HE 11014 AAAC TQZZA 95
Aggregation of different forwarding classes under queues takes place for each
bundle or port. If a port is a member of a bundle, such as a Multilink Point-to-Point
Protocol (MLPPP) bundle, then the aggregation and queuing is implemented for the
entire bundle. If a port is a standalone port, that is, not a member of bundle, then the
queuing takes place for the port.
3.4.2.1 Network Egress Per-VLAN Queuing
Network Ethernet ports support network egress per-VLAN (per-interface) shapers
with eight CoS queues per VLAN, which is an extension to the eight CoS queues per
port shared by all unshaped VLANs. Eight unique per-VLAN CoS queues are created
for each VLAN when the VLAN shaper is enabled. These per-VLAN CoS queues are
separate from the eight unshaped VLAN queues. The eight CoS queues that are
shared by all the remaining unshaped VLANs are referred to as unshaped VLAN
CoS queues. VLAN shapers are enabled when the queue-policy command is used
to assign a network queue policy to the interface.
For details on per-VLAN network egress queuing and scheduling, see Per-VLAN
Network Egress Shapers.
3.4.3 Network Egress Scheduling
Network egress scheduling is supported on the adapter cards and ports listed in
Table 10. The supported scheduling modes are profiled, 4-priority, and 16-priority.
Table 10 shows which scheduling mode each card and port supports at network
egress.
This section also contains information on the following topics:
• Network Egress 4-Priority Scheduling
• Network Egress 4-Priority (Gen-3) Scheduling
• Network Egress Scheduling on 8-port Ethernet Adapter Cards
• Network Egress 16-Priority Scheduling
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