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Cisco Bug: CSCun63981 - QoS support for lightweight APs

Last Modified

May 05, 2016

Products (1)

  • Cisco Aironet 3700 Series Access Points

Known Affected Releases

7.6(100.0)

Description (partial)

Symptom:
1. An 11n AP is configured for 40MHz wide channels, but is LAN connected at only 100Mbps. Under heavy client traffic load, the AP's CAPWAP connectivity may flap.

2. A multimedia client, such as one running Jabber or MS Lync, may be unable to mark its transmissions with 802.11e UP.  It may mark its transmissions in the layer 3 header (e.g. DSCP), but as this is encapsulated in CAPWAP, the network between the AP and the WLC is unable to match on this traffic type, and handle it accordingly

3. Wireless clients that are running Bonjour may offer heavy mDNS multicast traffic. Even if multicast is disabled in the network, these transmissions will still be carried upstream as CAPWAP-encapsulated multicast; there is no way to block these upstream transmissions at the AP or at the AP's switchport.

Conditions:
Operating a network with lightweight APs.
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