Hello, I would like to verify the use of a traffic-shaping policy within an MQC. I was told that you need to apply a shaping policy in order for QoS to always be engaged and not simply during times of congestion. This apparently is critical when you have apps like VoIP.
On a similar note, i remember reading up on Ciscopress that you might NOT want to subject VoIP to any form of Shaping as this introdues delay and can cause Jitter.
Below is a sample config. If you can post an authoritative source on CCO that explains this I would greatly appreciate it.
Regards,
-Mike
policy-map QoS-Policy
class realtime
priority 512
police 512000 conform-action transmit exceed-action drop
class preferred
bandwidth remaining percent 40
random-detect dscp-based
class missioncritical
bandwidth remaining percent 39
random-detect dscp-based
class trans-apps
bandwidth remaining percent 16
random-detect dscp-based
class general
bandwidth remaining percent 1
random-detect dscp-based
class class-default
bandwidth remaining percent 4
random-detect dscp-based
policy-map shape-20MB
class class-default
shape average 2000000
service-policy QoS-Policy
!
interface Serial0/0/0
service-policy output shape-20MB