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Cisco QOS using Access Lists for Citrix and VOIP

Posted on 2011-09-19
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Last Modified: 2012-05-12
Hello,

I am in need of some help developing a QoS policy for my MPLS utilizing access lists to map to specfic qos values. I need to prioritize my Avaya IP Office phone system which i believe uses dscp 46 for the call and dscp 34 for signaling.

Along with that I am looking for help in prioritizing my Citrix Xenapp traffic, I have Xenapp5 and Xenapp6 servers.  Should this be done via port / protocol or via IP any suggestions?

The values my MPLS provider is said to support are:
EF-46 (Real Time)
AF-31(Critical)
AF-11(Priority)

Thank you.



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Question by:nmatese
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3 Comments
 
LVL 6

Expert Comment

by:Sanjeevloke
ID: 36565984
class-map match-any Application
 description Video Conference
 match ip dscp af31  --------------------dscp bit marked by application if u knoe.
match access-group name Application-------also u can use IP access-list to prioritize.

class-map match-any RTP
 description [ VOIP Audio ]
 match protocol rtp audio


interface GigabitEthernet0/2
des **** LAN Interface ****
service-policy input QOS-IN

policy-map QOS-IN
 description [ Re-Classify ]
 class RTP
  set dscp ef
 class Application
  set ip dscp af31

-------------------------------------------------------------------------------------------

interface GigabitEthernet0/2
des **** WAN Interface ****
service-policy output QOS-OUT


policy-map QOS-OUT
 class REAL-TIME
  priority percent 25
 class Application
  bandwidth percent 15

class-map match-any REAL-TIME
 description REAL-TIME Traffic
 match ip dscp ef

class-map match-any Application
 description Application
 match ip dscp af21

U can modify percentage as per ur requirement
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Author Comment

by:nmatese
ID: 36566971
They provide me with the class matching, I need to use access lists to classify the other traffic. Citrix, Avaya IPOffice VOIP, SQL Servers,

Attached is the class match, the provider has given me.


Class-map: DSCP-EF-CLASS (match-all)
    dscp af41

Class-map: DSCP-AF31-CLASS (match-all)
    dscp af42

Class-map: DSCP-AF11-CLASS (match-all)
    dscp af43
Class-map: class-default (match-any)
    dscp default
A typical scheme (the default scheme):
•	Real Time QoS – Always prioritize over all other traffic; has a minimum guarantee of 100% bandwidth
•	Critical QoS – Always yield to Real Time traffic; has a minimum guarantee of 50% of the excess bandwidth unused by Real Time traffic 
•	Priority QoS – Always yield to Real Time traffic; has a minimum guarantee of 30% of the excess bandwidth unused by Real Time traffic 
•	Standard QoS – Always yield to Real Time traffic; has a minimum guarantee of 20% of the excess bandwidth unused by Real Time traffic

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LVL 6

Accepted Solution

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Sanjeevloke earned 500 total points
ID: 36567092
Its OK for what they do it at there side.

U have to do as per ur requirement..

QOS config at LAN interface connected to switch..
!
class-map match-any RTP
 description [ VOIP Audio ]
 match protocol rtp audio
match access-group name Avaya
!!
class-map match-any Application
match ip dscp af31  
match access-group name Application
!
policy-map QOS-IN
 description [ Re-Classify ]
 class RTP
  set dscp af41
 class Application
  set ip dscp af42
!
interface GigabitEthernet0/2
des **** LAN Interface ****
service-policy input QOS-IN
----------------------------------------------------------
On WAN side

interface GigabitEthernet0/2
des **** WAN Interface ****
service-policy output QOS-OUT


policy-map QOS-OUT
 class REAL-TIME
  priority percent 25
 class Application
  bandwidth percent 15

class-map match-any REAL-TIME
 description REAL-TIME Traffic
 match ip dscp 41

class-map match-any Application
 description Application
 match ip dscp af42




!
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