Cisco 4500E QOS

[avvotyakov]

                   Hi all! I have some cisco 4500E with sup7l-e and I want config acces port(with non-cisco ip phone), that cos and dcsp mark does not change. Can any one help me?

[shillings]

Not 100% clear what you need. Are you saying that you want to trust the marking set by a non-Cisco phone?

If so, configure the following on any trusted port: -

     auto qos voip trust

Worth reading the Auto QoS section in the software configuration guide, although I've encountered the occassional error reference the command set available.

This might help too:

http://www.cisco.com/en/US/prod/collateral/switches/ps5718/ps4324/white_paper_c11-539588.html

[avvotyakov]

thanks that answer, but as I read, if I configure port auto qos and connect non cisco ip phone(not support CDP), then cos and dscp will reset to defoult.

"

If  you have an auto-QoS policy on a port connected to a device that  supports CDP, the port is automatically trusted. However, if the device  does not support CDP (like legacy Digital Media Player), QoS trust must  be applied manually.

http://www.cisco.com/en/US/docs/switches/lan/catalyst4500/15.1/XE_330SG/configuration/guide/qos_mrg.html

"

[shillings]

I think you need to ascertain whether you want/can use MQC Auto-QoS or switch Auto-QoS. They have slightly different commands when I look back at my notes. You might prefer not to use Auto-QoS at all and do things manually.

Also note that the Auto-QoS commands are like a macro and so the entered command will not show in the running config. Instead, it will generate one or more commands of its own.

[Joseph W. Doherty]

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Posting

Hmm, I believe the sup7 trusts by default (like a router).  Not sure about the L version, but would expect the same.