Qos Policy Inconsistency On An Interface: Example - Cisco ASR 9000 Series Configuration Manual
Aggregation services router modular quality of service
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Configuring Access Node Control Protocol
Default RED Curve Thresholds Min : 8 kbytes Max: 8 kbytes
WRED Curve: 1 Thresholds Min : 8 kbytes Max: 8kbytes
Match: 3
WRED Curve: 2 Thresholds Min : 8 kbytes Max: 8 kbytes
Match: 4
---------------------------------------------------------------------------------
Level: 1 Policy: child-3play Class: 3-play-premium
Parent Policy: parent-3play-subscriber-line Class: class-default
QueueID: 10 (Priority Normal)
Queue Limit: 24 kbytes Profile: 1 Scale Profile: 8
WFQ Profile: 4 Committed Weight: 100 Excess Weight: 100
Bandwidth: 1920 kbps, BW sum for Level 1: 1920 kbps, Excess Ratio: 1
---------------------------------------------------------------------------------
Level: 1 Policy: child-3play Class: class-default
Parent Policy: parent-3play-subscriber-line Class: class-default
QueueID: 11 (Priority Normal)
Queue Limit: 8 kbytes Profile: 1 Scale Profile: 0
WFQ Profile: 5 Committed Weight: 1 Excess Weight: 1
Bandwidth: 0 kbps, BW sum for Level 1: 1920 kbps, Excess Ratio: 1
---------------------------------------------------------------------------------
QoS Policy Inconsistency on an Interface: Example
A valid QoS policy with absolute or percentage values must satisfy the following requirement:
interface speed > ANCP rate > QoS parent shaper rate
A Qos policy successfully applied to an interface can become invalid due to two possible external factors.
These two factors are an ANCP rate change or a port speed change:
• ANCP Rate Change—If the ANCP rate falls, or the ANCP rate adjustment factor makes the ANCP rate
• Port Speed Change—The port of a GigabitEthernet interface can be configured to 10 Mbps or 100 Mbps
When either of these changes occur, the QoS policy on the interface is placed in the inconsistency state. To
recover from the inconsistency state, perform one of the following tasks:
• Remove the QoS policy from the interface, adjust the QoS policy values, then reapply the QoS policy
• If the ANCP adjustment rate or the ANCP rate has been modified, update the ANCP rate to satisfy the
• If port speed has been modified, update the speed to satisfy the QoS policy rate requirement.
Following are examples of the effects of an ANCP rate change and a port speed change have on the following
QoS policy configuration on a Gigabit Ethernet interface:
policy-map child-3play
class 3play-voip
priority level 1
police rate 65 kbps
!
!
class 3play-video
priority level 2
police rate 128 kbps
!
random-detect cos 3 10 ms 100 ms
fall below the shaper rate of the top-most QoS policy map, the QoS policy on the interface becomes
invalid.
mode from the default of 1000 Mbps. When this happens, the interface speed drops to less than the
ANCP rate and QoS parent shaper rate. The QoS policy on the interface becomes invalid.
to the interface.
QoS policy rate requirement.
Cisco ASR 9000 Series Aggregation Services Router Modular Quality of Service Configuration Guide, Release 6.1.x
QoS Policy Inconsistency on an Interface: Example
31
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