Cisco 10000 Series User Manual

4-25
Cisco 10000 Series Router Quality of Service Configuration Guide
OL-7433-09
Chapter 4 Attaching Service Policies
Attaching Virtual Access Interface QoS Service Policies
Restrictions and Limitations for Attaching QoS Services to a VAI
• Virtual template interfaces and VAIs do not apply to routed bridge encapsulation (RBE) over ATM.
• Before a remote user initiates a session to the router, both the virtual template and virtual connection
must exist.
• Cisco IOS Release 12.2(25)SX does not support the configuration of broadband aggregation (BBA)
groups using RADIUS. You must configure BBA groups manually.
• You can only apply a QoS policy with queueing-related actions to a VC. Do not apply service
policies with class-based weighted fair queueing (CBWFQ) actions to a VAI using a virtual
template. The router supports queueing only when you apply the QoS policy to a VC.
• You can apply a QoS policy without queueing-related actions to either a VC or a VAI, but not to both
at the same time.
• You cannot use RADIUS to configure a QoS policy on the VC.
• If you configure a QoS policy on a VC, the show policy interface VAI command does not display
information to indicate that the VAI is subject to the VC service policy. However, if you apply a
policy directly to a VAI, the show policy interface VAI command displays information about the
policy on the VAI.
Attaching QoS Policies to VAIs Using Virtual Template Interfaces
To attach QoS service policies to virtual access interfaces (VAIs), perform the following required
configuration tasks:
• Applying a QoS Service Policy to a Virtual Template Interface, page 4-26
• Applying a Virtual Template Interface to a BBA Group, page 4-27
• Attaching a BBA Group to an Interface or Subinterface for PPPoE Sessions, page 4-28

Cisco 10000 Series Specifications

General

Brand	Cisco
Model	10000 Series
Category	Network Router
Language	English