Wireless Edge Services zl Module Release Notes WT.01.28

16
Support Notes and Clarifications
Release WT.01.03
Clarification: For Layer 3 Adoption, DHCP Server Option 189 Requires
ValueType‘String’
You must properly set up your DHCP server to support Layer 3 adoption of Radio Ports. Refer to your
DHCP server documentation for instructions on adding private options and the configurations that
your Radio Ports will receive.
For adopting Radio Ports at Layer 3, you must set up the DHCP option so that its code is 189, and its
value type is string (instead of Byte or IP).
Refer to the zl Module’s Management and Configuration Guide for more information.
Correction: Stations per Module in a Layer 3 Mobility Domain
The zl Module’s Management and Configuration Guide (February 2008), page 1-85, incorrectly
states that a Layer 3 Mobility Domain can include up to 12 modules, each of which can support up
to 500 stations. Instead, the number of local stations per module is 4096.
Correction: Disabling TKIP Countermeasures
TKIP countermeasures are used to prevent “man-in-the-middle” TKIP attacks by disabling client
connections for a short period of time. In some cases, you may want to disable TKIP
Countermeasures. The zl Module’s Management and Configuration Guide (February 2008) includes
a command that is not available for disabling TKIP Countermeasures:
no support wireless tkip-countermeasures
The following command effectively disables TKIP Countermeasures:
ProCurve(wireless-services-C)(config-wireless)#wlan 1 dot11i tkip-cntrmeas-hold-time ?
<0-65535> The hold-time in seconds. Default = 60
ProCurve(wireless-services-C)(config-wireless)#wlan 1 dot11i tkip-cntrmeas-hold-time 0
where 1 specifies the WLAN index in this example, and 0 specifies the hold-time (in seconds) in
which clients are disconnected.