Cisco Cisco Aironet 350 Mini-PCI Wireless LAN Client Adapter Guia Do Desenho
5-23
Enterprise Mobility 4.1 Design Guide
OL-14435-01
Chapter 5 Cisco Unified Wireless QoS
802.11e, 802.1P, and DSCP Mapping
•
Non-WMM clients have the DSCP of their LWAPP tunnel set to match the default QoS profile for
that WLAN. For example, the QoS profile for a WLAN supporting 7920 phones would be set to
platinum, resulting in a DSCP classification of EF for data frames packets from that AP WLAN.
that WLAN. For example, the QoS profile for a WLAN supporting 7920 phones would be set to
platinum, resulting in a DSCP classification of EF for data frames packets from that AP WLAN.
•
LWAPP data packets from the WLC have a DSCP classification that is determined by the DSCP of
the wired data packets sent to the WLC. The 80211.e classification used when sending frames from
the AP to a WMM client is determined by the AP table converting DSCP to WMM classifications.
the wired data packets sent to the WLC. The 80211.e classification used when sending frames from
the AP to a WMM client is determined by the AP table converting DSCP to WMM classifications.
Note
The WMM classification used for traffic from the AP to the WLAN client is based on the DSCP value
of the LWAPP packet, and not the DSCP value of the contained IP packet. Therefore, it is critical that
an end-to-end QoS system is in place.
of the LWAPP packet, and not the DSCP value of the contained IP packet. Therefore, it is critical that
an end-to-end QoS system is in place.
QoS Baseline Priority Mapping
The LWAPP AP and WLC perform QoS baseline conversion, so that WMM values as shown in
are mapped to the appropriate QoS baseline DSCP values, rather than the IEEE values.
Deploying QoS Features on LWAPP-based APs
When deploying WLAN QoS on the APs, consider the following:
Table 5-7
Access Point QoS Translation Values
AVVID 802.1 UP-Based Traffic Type
AVVID IP DSCP
AVVID 802.1p UP
IEEE 802.11e UP
Network control
-
7
-
Inter-network control (LWAPP control,
802,11 management
802,11 management
48
6
7
Voice
46 (EF)
5
6
Video
34 (AF41)
4
5
Voice Control
26 (AF31)
3
4
Background (gold)
18 (AF21)
2
2
Background (gold)
20 (AF22)
2
2
Background (gold)
22 (AF23)
2
2
Background (silver)
10 (AF11)
1
1
Background (silver)
12 (AF12)
1
1
Background (silver)
14 (AF13)
1
1
Best Effort
0 (BE)
0
0, 3
Background
2
0
1
Background
4
0
1
Background
6
0
1