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Cisco 10000 Series Router Quality of Service Configuration Guide
OL-7433-09
Chapter 1 Quality of Service Overview
QoS Features, Commands, and Changes
Cisco IOS Release:
Release 12.2(31)SB2
Description:
This command was introduced on the PRE3.
Class-Based Weighted Fair Queuing for Virtual Access Interfaces Feature
Cisco IOS Release:
Release 12.0(25)SX
Description:
The Class-Based Weighted Fair Queuing (CBWFQ) for virtual access interfaces (VAIs)
feature was introduced on the PRE1 to allow a VAI to inherit the service policy of the VC that the VAI
uses.
Cisco IOS Release:
Release 12.2(16)BX
Description:
This feature was introduced on the PRE2.
Cisco IOS Release:
Release 12.2(28)SB
Description:
This feature was integrated in Cisco IOS Release 12.2(28)SB.
Simultaneous Policy Maps
Documentation Reference:
Chapter 14, “Simultaneous Policy Maps”
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Simultaneous QoS Policy Map on Interface and PPP Session—A-DSLAM Case, page 1-60
Simultaneous QoS Policy Map on Interface and PPP Session—A-DSLAM Case
Cisco IOS Release:
Release 12.2(33)SB
Description:
The Simultaneous QoS Policy Map on Interface and PPP Session—A-DSLAM Case
feature was introduced on the PRE2, PRE3, and PRE4 to allow the broadband aggregation system
(BRAS) to provide multiple levels of QoS hierarchy that shape traffic at different points of congestion
in the Layer 2 network. This enables the BRAS to avoid congestion in downstream links within the
network.
VLAN Tag-Based Quality of Service
Documentation Reference:
Chapter 21, “VLAN Tag-Based Quality of Service”
Cisco IOS Release:
Release 12.2(31)SB2
Description:
The QoS—VLAN Tag-Based feature was introduced on the PRE2 and PRE3 to enable you
to apply a single QoS policy, referred to as a VLAN-group policy, to a group of IEEE 802.1Q VLAN
subinterfaces.
