1-20
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(33)SB
Description:
This feature was enhanced on the PRE3 and introduced on the PRE4 to enable you to
configure the rate and burst size of the divert cause policer. See the Control Plane Policing—Platform
Enhancement feature.
Control Plane Policing—Platform Enhancement
Cisco IOS Release:
Release 12.2(33)SB
Description:
The Control Plane Policing—Platform Enhancement feature was introduced on the PRE3
and PRE4 and included:
•
User-Level Punt Monitoring, page 1-20
•
Configurable Rate and Burst Size for the Divert Cause Policer, page 1-20
•
Drop Alarms for Packet Drops by the To-RP Queues and Divert Cause Policer, page 1-20
User-Level Punt Monitoring
Cisco IOS Release:
Release 12.2(33)SB
Description:
The User-Level Punt Monitoring feature was introduced on the PRE3 and PRE4 to prevent
a denial of service (DoS) attack. Using this feature, you can monitor individual users and display
statistical information about traffic that the PXF engine sends (punts) to the route processor (RP).
Configurable Rate and Burst Size for the Divert Cause Policer
Cisco IOS Release:
Release 12.2(33)SB
Description:
The Configurable Rate and Burst Size for the Divert Cause Policer feature was introduced
on the PRE3 and PRE4 to configure the rate and burst size of the divert cause policer.
Drop Alarms for Packet Drops by the To-RP Queues and Divert Cause Policer
Cisco IOS Release:
Release 12.2(33)SB
Description:
The Drop Alarms for Packet Drops by the To-RP Queues and Divert Cause Policer feature
was introduced on the PRE3 and PRE4 to monitor possible DoS attacks by sending warning messages
(alarms) to the console and the syslog log file to alert you when a change in drop activities occurs, such
as packet drops due to congestion in the To-RP queues or due to aggregated traffic that violates the divert
cause policer.
