HP ProCurve Switches / Wireless - Interoperability between the Aastra Wireless Phone 312 and ProCurve Wireless Services

Interoperability between the Aastra Wireless Phone 312 and ProCurve Wireless Services
HP ProCurve Networking
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5. Fast roaming
Layer 2 roaming occurs when a phone that was associated to a radio port moves to another radio port adopted by the
same WESM. The phone remains in the same VLAN.
Layer 3 roaming occurs when a phone moves between two radio ports associated to different WESM modules. The
voice WLAN is associated to different VLANs ( and subnets) on the two modules. In this case, the phone keeps its
original IP address but the voice flow is tunneled by the current module to the home module.
For more information on L2/L3 roaming configurations, please refer to application note AN-M3, How to configure L2
and L3 wireless roaming.
5.1 About fast roaming
To enable a phone to quickly make the transition between two radio ports and reduce the roaming time, you normally
configure the following options: PMK caching, opportunistic key caching, and pre-authentication. However, these
options apply to 802.1X authentication only, which is not supported by the Aastra wireless phone. (For this reason, we
configured WPA2 with a pre-shared key instead.)
5.2 Configure self-healing
The self-healing feature of the Wireless Edge Services Module enables associating neighbors to each radio port. In
case of failure of a radio port, the neighbors will increase their coverage. You can also enable interference avoidance.
To configure self-healing on the WESM:
1. From Special Features > Self Healing, click the Enable Neighbor Recovery check box.
2. You can also click the Enable Interference Avoidance check box.
3. From the Neighbor details tab click Detect Neighbors. You see the Neighbor Details window.
4. In the Neighbor Details window, select a radio and click Edit. You can edit a radio to check that other radios
with same 802.11 mode (a or b/g) have been listed as neighbors.