[cisco-voip] CCM and QoS

[Fedorov, Konstantin]

Hello Jordi,

 

-         Headquarters:

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

 

DSCP, because CCM connected to the switch via access port, on which we donn't have L2 cos  parameters.

 

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

 

Depend, if you use trunk between router and switch , you can use cos, but in the policy-map you must correctly set cos values for example set cos dscp

, if access port - dscp.

 

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

 

See above answer.

 

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

 

Any,  but I preffer concistency, if you use dscp, why not using it.

 

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

 

Auto voice trust, recognize Cisco devices only, so if h323 Gw Cisco , you can use this. 

 

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

 

Access port  - dscp.

 

By default CCM marks signaling traffic  to the  26 ( af31) and media (rtp) 46 (ef)

 

-----------------------
Sincerely Yours,
Konstantin Fedorov

  _____  

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 4:16 PM
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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