01-21-2009 01:29 AM - edited 03-06-2019 03:33 AM
Hi all, is there a simple qos config I can type for simply trusting ip traffic from my phone ?
01-21-2009 12:05 PM
It will depend on your IOS version and hardware type.
Auto QoS feature is available in certain platform/IOS version.
http://www.cisco.com/en/US/technologies/tk543/tk879/technologies_white_paper0900aecd800a8561.html
01-21-2009 02:27 PM
I would suggest Auto QOS it is easy and I have used it on my switch port, you can set ip up to trust VoIP or use a basic auto qos trust. look through the doc's below. HTH
interface FastEthernet0/3
switchport access vlan 222
switchport mode dynamic desirable
switchport voice vlan 698
speed 100
duplex full
srr-queue bandwidth share 10 10 60 20
srr-queue bandwidth shape 10 0 0 0
priority-queue out
mls qos trust device cisco-phone
mls qos trust cos
auto qos voip cisco-phone
spanning-tree portfast
01-21-2009 03:02 PM
what command would i put on the trunk uplink ports?
cheers
Carl
01-21-2009 07:52 PM
use:
auto qos voip trust
This enables auto-QoS on the interface, and specify that the interface is connected to a trusted router or switch.
02-08-2009 01:54 PM
hi there
when you put in the cisco-phone command, what is it looking for? would it work with other phone vendors?
what do these commands mean?
mls qos trust device cisco-phone ?
mls qos trust cos ?
auto qos voip cisco-phone ?
02-08-2009 05:12 PM
mls qos trust device cisco-phone =
Trust marking only from a cisco IP phone (The switch uses cdp to know a cisco phone is plugged into the port).
mls qos trust cos =
This command instructs the switchport to trust class of service (cos) markings originating from the device plugged into the port.
auto qos voip cisco-phone =
This command enables / starts auto qos on the switch port and tells the switch to place commands that trust markings only from a cisco phone.
Cisco devices use CDP (cisco discovery protocol) to detect each other. For non cisco devices you will have to configure how you want the trust to be established.
By default cisco IP phone will mark voice traffic as 5. So say for instane I want to mark a COS from a device you could say
mls qos trust cos
switchport priority extend cos 5
The second command will mark traffic from the phone with cos 5 which is recommended for voice traffic. There is more to COS. This is the tip of the iceberg.
Pls rate if helpful.
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