QoS and QoS Policies
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Quality of Service Guide
3HE 11014 AAAC TQZZA Edition: 01
• CoS-3 out-of-profile traffic
• CoS-2 out-of-profile traffic
• CoS-1 out-of-profile traffic
3.4.4 Network Egress Shaping
All the network egress traffic is shaped at the bundle or interface rate. An interface
may not necessarily correspond directly to a port, and an interface could be a
sub-channel of a port. As an example, Fast Ethernet could be the choice of network
egress, but the leased bandwidth could still be a fraction of the port speed. In this
case, it is possible to shape at the interface rate of 15 Mb/s, for example.
The same also applies to MLPPP bundles. The shaping takes place per MLPPP
bundle, and the traffic is shaped at the aggregate rate of the MLPPP bundle.
3.4.5 Network Egress Shaping for Hybrid Ports
Hybrid ports use a third-tier, dual-rate aggregate shaper to provide arbitration
between the bulk of access and network egress traffic flows. For details, see QoS for
Hybrid Ports on Gen-2 Hardware.
3.4.6 Network Egress Per-VLAN Shapers
Network egress VLAN traffic uses second-tier (or second-level), per-VLAN shapers
to prepare network egress traffic for arbitration with the aggregate of the unshaped
VLAN shaper. All the shaped VLAN shapers are arbitrated with one unshaped VLAN
shaper.
Note: Default configuration means that the queues are configured according to the tables
and defaults described in this guide. Customers can configure the queues differently.
Note: This section applies to Gen-1 and Gen-2 adapter cards. For information on per-VLAN
shapers for Gen-3 adapter cards and platforms, such as the 6-port Ethernet 10Gbps
Adapter card and the 7705 SAR-X, see Figure 13 in the QoS for Gen-3 Adapter Cards and
Platforms section.
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