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Configuring WMM U-APSD
To extend the battery life and enable power saving on WLAN clients, IAPs support Unscheduled Automatic
Power Save Delivery (U-APSD) for the clients that support WMM. The U-APSD or the WMM Power Save feature
is enabled by default on all SSIDs. When configured, U-APSD enables a client station to retrieve the unicast QoS
traffic buffered in the IAP by sending trigger frames. During the association or reassociation with the IAP, the
station indicates the WMM Access Categories for which U-APSD is enabled. In the current release, IAPs support
U-APSD on all WMM ACs.
To disable U-APSD on an SSID:
(Instant AP)(config)# wlan ssid-profile <ssid_profile>
(Instant AP)(SSID Profile "<ssid_profile>")# wmm-uapsd-disable
(Instant AP)(SSID Profile "<ssid_profile>")# end
(Instant AP)# commit apply
To re-enable U-APSD on an SSID:
(Instant AP)(config)# wlan ssid-profile <ssid_profile>
(Instant AP)(SSID Profile "<ssid_profile>")# no wmm-uapsd-disable
(Instant AP)(SSID Profile "<ssid_profile>")# end
(Instant AP)# commit apply
Media Classification for Voice and Video Calls
Instant supports the following media classification types:
Classify Media Flag
l
STUN Based Media Classification
l
Classify Media Flag
Voice and video devices use a signaling protocol to establish, control, and terminate voice and video calls. These
control or signaling sessions are usually permitted using predefined ACLs. If the control signaling packets are
encrypted, the IAP cannot determine the dynamic ports that are used for voice or video traffic. In these cases,
the IAP has to use an ACL with the classify-media option enabled to identify the voice or video flow based on a
deep packet inspection and analysis of the actual traffic. Instant identifies and prioritizes voice and video traffic
from applications such as Skype for Business, Apple Facetime, and Jabber.
Skype for Business uses Session Initiation Protocol (SIP) over TLS or HTTPS to establish, control, and terminate
voice and video calls. Apple Facetime uses Extensible Messaging and Presence Protocol (XMPP) over TLS or
HTTPS for these functions.
The following CLI example shows the media classification for VoIP calls:
(Instant AP)(config)# wlan access-rule example_s4b_test
(Instant AP)(example_s4b_test)# rule alias <domain_name_for_S4B_server> match tcp 443 443
permit log classify-media
(Instant AP)(example_s4b_test)# rule any any match tcp 5060 5060 permit log classify-media
(Instant AP)(example_s4b_test)# rule any any match tcp 5061 5061 permit log classify-media
(Instant AP)(example_s4b_test)# rule any any match tcp 5223 5223 permit log classify-media
(Instant AP)(example_s4b_test)# rule any any match any any any permit
(Instant AP)(example_s4b_test)# end
(Instant AP)# commit apply
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| Voice and Video
Aruba Instant 6.5.0.0-4.3.0.0 | User Guide
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