Configuring Cisco Ios Access Points; Configuring Cisco Switch Ports; Configuring Switch Ports For Wired Ip Phones - Cisco 7925G Deployment Manual

Configuring Cisco IOS Access Points

You can use this QoS policy on the Cisco IOS access point (AP) to enable DSCP to COS mapping. This allows RTP packets to
be placed into the voice queue, if those packets are marked correctly, when received at the access point level.
class-map match-all RTP
match ip dscp ef
class-map match-all SCCP
match ip dscp cs3
!
policy-map Voice
class RTP
set cos 6
class SCCP
set cos 4
!
interface X
service-policy input Voice
service-policy output Voice

Configuring Cisco Switch Ports

Configure the Cisco access point switch ports and uplink switch ports for DSCP trust.
mls qos
!
interface X
mls qos trust dscp
Note: When using the Cisco Unified Wireless LAN Controller, DSCP trust must be implemented or trust the UDP data ports
used by the Cisco Unified Wireless LAN Controller (LWAPP = 12222 and 12223; CAPWAP = 5246 and 5247) on all
interfaces where wireless packets will traverse to ensure QoS markings are correctly set. Versions prior to 5.2 use LWAPP,
where versions 5.2 and later use CAPWAP.

Configuring Switch Ports for Wired IP Phones

Enable the Cisco wired IP phone switch ports for Cisco phone trust
mls qos
!
Interface X
mls qos trust device cisco-phone
mls qos trust dscp
If DSCP markings are not preserved, then the below configuration can be used to set the DSCP based on the TCP or UDP port
to map RTP and SCCP correctly.
Ensure the following QoS policy is not applied to an interface where wireless traffic traverses.
If using non-secure SCCP, then TCP port 2000 is used. TCP port 2443 is used for secure SCCP.
Cisco Unified Wireless IP Phone 7925G Deployment Guide 21