Cisco 10000 Series User Manual

12-6
Cisco 10000 Series Router Quality of Service Configuration Guide
OL-7433-09
Chapter 12 Sharing Bandwidth Fairly During Congestion
System Limits for CBWFQ
Restrictions and Limitations for CBWFQ for VAIs
• Virtual template interfaces and VAIs do not apply to routed bridge encapsulation (RBE) over ATM.
• Both the virtual template and virtual connection must exist before a remote user initiates a session
to the router.
• 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 queuing-related actions to a VC. Do not apply service policies
with class-based weighted fair queuing (CBWFQ) actions to a VAI using a virtual template. The
router supports queuing only when you apply the QoS policy to a VC.
• You can apply a QoS policy without queuing-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.
• The port must be in atm pxf queuing mode.
• You cannot configure a service policy on a VC and on a session at the same time.
System Limits for CBWFQ
For information about the system limits for class maps and policy maps configured for CBWFQ, see the
“System Limits for Class Maps” section on page 2-2 and the “System Limits for Policy Maps” section
on page 3-2.

Cisco 10000 Series Specifications

General

Brand	Cisco
Model	10000 Series
Category	Network Router
Language	English