Cisco Cisco DX70 Design Guide
Cisco DX Series Wireless LAN Deployment Guide
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Since the Cisco DX Series uses active mode, the DTIM period will not be used to schedule wake up periods to check for
broadcast and multicast packets as well as any unicast packets.
Broadcast and multicast traffic will be queued until the DTIM period when there are power save enabled clients associated to
the access point, so DTIM will determine how quickly these packets can be delivered to the client. If using multicast
applications, a shorter DTIM period can be used.
If multiple multicast streams exist on the wireless LAN frequently, then it is recommended to set the DTIM period to 1.
broadcast and multicast packets as well as any unicast packets.
Broadcast and multicast traffic will be queued until the DTIM period when there are power save enabled clients associated to
the access point, so DTIM will determine how quickly these packets can be delivered to the client. If using multicast
applications, a shorter DTIM period can be used.
If multiple multicast streams exist on the wireless LAN frequently, then it is recommended to set the DTIM period to 1.
Quality of Service (QoS)
Quality of Service enables queuing to ensure high priority for voice and video traffic.
To enable proper queuing for voice, interactive video, and call control traffic use the following guidelines.
To enable proper queuing for voice, interactive video, and call control traffic use the following guidelines.
• Ensure that WMM is enabled on the access point.
• Create a QoS policy on the access point giving priority to voice, interactive video, and call control traffic.
Traffic Type
DSCP
802.1p
WMM UP
Port Range
Voice
EF (46)
5
6
UDP 16384 - 32767
Interactive Video &
Audio for Video Calls
Audio for Video Calls
AF41 (34)
4
5
UDP 16384 - 32767
TelePresence Calls
(Voice & Video)
(Voice & Video)
CS4 (32)
4
5
UDP 16384 - 32767
Call Control
CS3 (24)
3
4
TCP 5060 - 5061
• Be sure that voice, interactive video, and call control packets have the proper QoS markings and other protocols are not
using the same QoS markings.
• Select the Platinum QoS profile for the WLAN when using Cisco Unified Wireless LAN Controller technology and
set the 802.1p tag to 5.
• Enable Differentiated Services Code Point (DSCP) preservation on the Cisco IOS switch.
Note: Voice and interactive video frames will be marked with DSCP AF41 and WMM UP 5 for standard video calls.
As of the 10.1(1) release for the Cisco DX Series with the Cisco Unified Communications Manager 10.0 release, voice and
video frames for TelePresence calls will be marked with DSCP CS4 and WMM UP 5.
The WMM UP marking could be downgraded if CAC (TSPEC) is enabled for voice or video.
For more information about TCP and UDP ports used by the Cisco DX Series and the Cisco Unified Communications Manager,
refer to the Cisco Unified Communications Manager TCP and UDP Port Usage document at this URL:
For more information about TCP and UDP ports used by the Cisco DX Series and the Cisco Unified Communications Manager,
refer to the Cisco Unified Communications Manager TCP and UDP Port Usage document at this URL:
http://www.cisco.com/c/en/us/td/docs/voice_ip_comm/cucm/port/10_0_1/CUCM_BK_T537717B_00_tcp-port-usage-guide-
100.html
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