[cisco-voip] CCM and QoS

[Linsemier, Matthew]

Jordi,

 

It seems that you have things backwards.

 

For CCM, Unity, IPCC Express servers and your gateways you should be trusting DSCP.

 

For your Layer 2 connections and trunk links, you should be trusting COS.

 

Also, that latest version of CatIOS now supports AutoQOS (but I haven' tested it yet) if you wanted to go that route.

 

Matt

 

________________________________

From: cisco-voip-bounces at puck.nether.net [mailto:cisco-voip-bounces at puck.nether.net] On Behalf Of Jordi Riba (Europe)
Sent: Friday, September 21, 2007 8:16 AM
To: cisco-voip at puck.nether.net
Subject: [cisco-voip] CCM and QoS

 

Hi All,

 

I would like anyone to answer these QoS configuration doubts, if it's possible?

 

I have a Headquarters office and some branch offices:

 

-          Headquarters:

o        CCM connected to a 6500 Switch port  --> What should I use?

*         Mls qos trust cos    <-- I'm using this one

*         Mls qos trust dscp

 

o        Service provider Router connected to a 6500 Switch port (Layer 2 connection) --> What should I use?

*         Mls qos trust cos

*         Mls qos trust dscp  <-- I'm using this one

 

o        MGCP Gateways connected to a 6500 Switch port  --> What should I use?

*         Mls qos trust cos <-- I'm using this one

*         Mls qos trust dscp  

 

o        Switch connected through trunk ports --> What should I use?

*         Mls qos trust cos 

*         Mls qos trust dscp  <-- I'm using this one

 

-          Branch Offices:

o        H323 Gateways connected to a 3560 switch port -->What should I use?

*         I'm using "auto qos voip trust"

 

o        Service provider Router connected to a 3560 Switch port (Layer 2 connection) --> What should I use?

*         I'm using "auto qos voip trust" but changing the line "mls qos trust cos" to "mls qos trust dscp"

 

Does CCM automatically mark signaling traffic to DSCP 24? Should I configure anything on Enterprise Parameters? I think it's not necessary to do anything but I'm not sure...

 

Any help will be  appreciated.

 

Thanks,

 

 

Jordi Riba

IT / Systems Engineer

Dimension Data España

Tel:       +34 93 467 08 10  Ext: 825

Mov:    +34 660 089 360

Fax:     +34 93 487 91 71

jordi.riba at eu.didata.com <mailto:jordi.riba at eu.didata.com> 

 

BARCELONA, C/ Agricultura 106  planta 1. 08019 Barcelona

 

For further information about Dimension Data, please go to www.dimensiondata.com <http://www.dimensiondata.com/> 

 


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