Hierarchical Queuing Framework
Figure 22-1
Pkt queues
Class Layer
Logical Layer-
VLAN or ATM
VC
Physical Layer-
Interface or ATM
VP
The PRE1 and PRE2 use the virtual time management system (VTMS) scheduling algorithm and do not
Note
support the HQF architecture.
Feature History for Hierarchical Queuing Framework
Cisco IOS Release
Release 12.2(31)SB2
Release 12.2(33)SB
Hierarchical Queuing Framework Scaling
The hierarchical queuing framework (HQF) supports the following interfaces:
•
•
•
Cisco 10000 Series Router Quality of Service Configuration Guide
22-2
HQF 3 Layers of Hierarchy
Description
This feature was introduced on the PRE3.
This feature was introduced on the PRE4.
61,500 logical interfaces
16,000 physical interfaces
Up to 15 queues per interface (2 priority queues [PQs], 12 nondefault queues, and 1 default queue)
Chapter 22
Hierarchical Scheduling and Queuing
Required PRE
PRE3
PRE3, PRE4
OL-7433-09