[cisco-voip] CCM and QoS

Fri Sep 21 13:53:58 EDT 2007

Thank you very much!!

Jordi!

From: Scott Voll [mailto:svoll.voip at gmail.com] 
Sent: viernes, 21 de septiembre de 2007 19:51
To: Fedorov, Konstantin
Cc: Jordi Riba (Europe); cisco-voip at puck.nether.net
Subject: Re: [cisco-voip] CCM and QoS

Control is actually CS3 now.  That change a while ago.

Scott

On 9/21/07, Fedorov, Konstantin <kfedor at amt.ru> wrote: 

Hello Jordi,

-         Headquarters: 

o       CCM connected to a 6500 Switch port  à 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) à 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   à What should I use?

See above answer.

o       Switch connected through trunk ports à 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 àWhat 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) à 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  à What should I use?

§    Mls qos trust cos    ß I'm using this one

§    Mls qos trust dscp

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

§    Mls qos trust cos

§    Mls qos trust dscp  ß I'm using this one

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

§    Mls qos trust cos ß I'm using this one

§    Mls qos trust dscp  

o       Switch connected through trunk ports à What should I use?

§    Mls qos trust cos 

§    Mls qos trust dscp  ß I'm using this one

-         Branch Offices: 

o       H323 Gateways connected to a 3560 switch port àWhat should I use?

§    I'm using "auto qos voip trust"

o       Service provider Router connected to a 3560 Switch port (Layer 2 connection) à 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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