05-07-2008 09:12 PM - edited 03-15-2019 10:31 AM
Dear Friends. Can some body explain what is the each command will do. pls explain.
class-map match-any Voice
match dscp ef
match ip precedence 5
class-map match-any Signaling
match dscp cs3
match ip precedence 3
!
!
policy-map QoS-WAN-01
class Voice
priority 460
class Signaling
bandwidth 246
class class-default
fair-queue
Regards
Esa
05-08-2008 01:04 AM
Using the Modular QoS CLI you can configure QoS for VoIP by configuring a class-map to classify traffic based on various match criteria and a policy-map command to determine what needs to happen to each class. You then apply the policy to incoming or outgoing traffic on an interface by issuing the service-policy command.
Whats happening above is that you're matching traffic with DSCP EF (Voice RTP traffic) and your DSCP cs3 (Voice signalling traffic) in your class-map.
In your policy map you're then giving each traffic type a certain priority.
Voice RTP - 460kbps
Voice Signalling - 246kbps
HTH
05-11-2008 05:53 PM
Hi. Thank you for your reply. it is mention priority 460, that means 460kbps for voice rtp? but in case of signal it mentiones 246kbps. But in the rtp priority just mention 460 only, is it ok?
regards
Esa
05-11-2008 06:35 PM
that means that anything under the voice class will be sent to the PQ, usually it's RTP but it can be whatever you want. on this example is anything that matches DSCP EF
priority
http://www.cisco.com/en/US/docs/ios/12_1/qos/command/reference/qrdcmd3.html#wp1036073
if you want to know what each command does, go thru the above documentation. It covers all the QoS commands
you usually have a definition for the media and another for signaling, that's OK. that's only an example, you would need to define the BW based on your requirements
there are a lot of docs on CCO regarding the subject:
Introduction to QoS Features for Voice
http://www.cisco.com/en/US/docs/ios/qos/configuration/guide/qos_voice_features.html
Voice QoS: ToS-CoS Packet Marking for use with LLQ
http://www.cisco.com/en/US/tech/tk652/tk698/technologies_configuration_example09186a00800a954d.shtml
QoS Features for Voice Introduction
http://www.cisco.com/en/US/docs/ios/12_1/qos/configuration/guide/qcdvoice.html
Quality of Service (QoS)
http://www.cisco.com/en/US/products/ps6558/products_ios_technology_home.html
Modular Quality of Service Command-Line Interface Overview
http://www.cisco.com/en/US/docs/ios/12_2/qos/configuration/guide/qcfmdcli.html
HTH
javalenc
if this helps, please rate
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