Installation guide

Chapter 10
146 Sniffer Technologies
DLC Listbox
The DLC listbox lists the objects at the next higher layer associated with this
object. At the Wireless layer, the next higher Expert layer is the DLC layer. For
example, the DLC listbox could list multicast addresses to which this wireless
station has sent frames. In the case of an access point, this listbox will typically
include multiple DLC address (since many stations use an access point for
ingress and egress for the wireless network). You can double-click each object
in the listbox to drill into the upper layers of the Expert.
Alarms Listbox
The Alarms listbox contains the alarms generated by the Expert for this object.
You can double-click each listed alarm to see more detailed information about
(including a link to the Expert Explain File for the alarm).
Object Information
The final grid includes the total number of diagnoses and symptoms generated
for this object, the time the first frame for this object was captured, and the time
the last frame for this object was captured.
Expert Alarms for Wireless Networks
The Sniffer software includes many wireless-specific Expert alarms. As with all
Expert alarms, you can set severities for each of the alarms in this section in
the Tools > Expert Options > Alarms tab. Each alarm is described below,
organized by the Expert layer at which they occur.
 Global Layer Expert Alarms for Wireless Networks on page 146
 Wireless Layer Expert Alarms for Wireless Networks on page 147
Global Layer Expert Alarms for Wireless Networks
Channel Mismatch
The Expert generates the Channel Mismatch alarm in the following
situations:
 In an infrastructure wireless network (a wireless network with access to
a distribution system), the Expert generates this alarm when it receives
beacon and/or probe response frames from an access point on a
channel other than the channel on which the access point is configured
to operate.