Viavi MTS 4000 Base Unit, User Manual

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Chapter 8 802.11 Wireless Testing
802.11 wireless results
User Manual 77000000206 Rev. 007 127
Errors
This screen reports error statistics. Table 4 describes the 802.11 Errors
results.
Preamble The preamble type in use by this BSS - short
& long or long only. Short preambles can
increase performance but can reduce frame
detection in noisy environments.
QoS BSS Whether the BSS supports any quality of ser-
vice controls. A BSS with QoS will generally
handle tasks such as VoIP better.
APSD Whether the BSS supports Automatic Power
Save Delivery. APSD is a method to allow
802.11 devices to consume very little power.
Protection Whether the BSS requires CTS protection
when transmitting. CTS-to-self is a mecha-
nism used to protect 802.11b devices operat-
ing on 802.11g networks.
AID The association identifier of the Product
Name/Family Brand in this BSS.
Pairwise Cipher The cipher (encryption method) used for
frames sent between the Product Name/Fam-
ily Brand and the access point.
Groupwise Cipher The cipher (encryption method) used for
frames sent from the access point to all
devices associated with it.
Protocol The security key protocol in use. This is N/A
when using no security or WEP. For WPA
modes, it will be either WPA or WPA2
depending on what was negotiated.
Key Mgmt The key management system used by the key
protocol. For WPA/WPA2, it will be PSK; for
non-WPA encryption modes, it will be None.
Speeds The speeds supported by the BSS. The bold
speeds are speeds that all associated
devices must support to join the BSS.
Table 3 BBS Properties results
Result Definition