IXIA IxWLAN, Руководство пользователя

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IxWLAN User Guide, Release 6.20 4-31
The Web-Based User Interface
vSTA Side Bar
Figure 4-40. vSTA Error
Number of Retries : Specifies the number of times IxWLAN should issue authen-
tication and association requests before failing the operation. It can be a value in
the 0 to 10 range.
Persist : Click the checkbox to enable or disable persistence. When enabled, vir-
tual stations in this group remain persistent (connected) if the System Under Test
deauthenticates or disassociates. If IxWLAN loses connection to a System Under
Test, persistence allows it to recover and continue the test at the point where it
was interrupted. For example, if a virtual station is in a run or associated state and
an 802.11 management frame (deauth or disassoc) is sent by the System Under
Test and received by IxWLAN, the virtual station tries to return to the state it was
in, before the management frame was received. If the virtual station was running
a ping test, the ping test continues. If it was in an associated state, the virtual sta-
tion reissues the associate request.
Auth/Assoc Timeout : Specifies the timeout value (in ms) for authentication and
association requests. It can be set to a value in the 250 to 60000 ms (1 min) range.
AKMP Timeout : Sets a wait state timer (0…3600 s) for the virtual stations in the
group. In situations where the System Under Test does not start or respond dur-
ing a 4-way handshake, the affected virtual station may stall in a wait state. The
timer can be used to recover the virtual station into an operable state. If the vir-
tual station remains in a wait state until this timer expires, it is 802.11 de-authen-
ticated and returned to the beginning state. The default value (
zero ) disables the
timer (that is, wait forever).