User's Manual

Configuring TotalWatch
Dell 802.11n APs and non-11n APs in AM-mode support for TotalWatch is the ability to scan all channels of the
RF spectrum, including 2.4-and 5-GHz bands as well as the 4.9-GHz public safety band. TotalWatch also
provides 5-MHz granular channel scanning of bands for rogue devices, and dynamic scanning dwell times to
focus on those channels with traffic. TotalWatch provides an advanced set of features to detect unauthorized
wireless devices and a set of customized rules are used to highlight devices that truly pose a threat to the
network.
TotalWatch is supported on APs deployed in the AM-mode only.
TotalWatch provides monitoring support for the entire WLAN spectrum. Dell APs in the AM-mode can monitor
the following frequencies:
l 2412MHz to 2472MHz in the 2.5GHz band
l 5100Mhz to 5895MHz in the 5GHz band.
Dell APs in AM-mode can scan the following additional frequencies:
l 2484 MHz and 4900Mhz to 5000MHz (J-channels)
l 5000 to 5100Mhz
If the AP is HT-capable (High Throughput), then these frequencies are scanned in the 40MHz mode.
Understanding TotalWatch Channel Types and Qualifiers
Based on the regulatory characteristics, channels are categorized into the following types:
Reg-domain Channels—A channel that belongs to the regulatory domain of the country in which the AP is
deployed. The set of channels that belong to this group is a subset of the channels in all-reg-domain channel
group.
All-reg-domain Channels—A valid non-overlapping channel that is in the regulatory domain of at least one
country. The channels in this category belong to the frequency range of:
n 2412MHz to 2472MHz in the g-band
n 5100Mhz to 5895MHz in the a-band.
Rare Channel—Channels that fall into a frequency range outside of the regulatory domain; 2484 MHz and
4900MHz-4995MHz (J-channels), and 5000-5100Mhz. The channels in this group do not belong to any other
group.
Each of these channel types can have an associated qualifier:
Active Channel—This qualifier indicates that wireless activity is detected on this channel by the presence of
an AP or other 802.11 activity; a probe requests for example.
DOS Channel—A channel where wireless containment is active. This channel should belong to the country-
code channel (regulatory domain).
Understanding TotalWatch Monitoring Features
TotalWatch enables monitoring of all channels including regulatory domain and rare channels. You can select
one of the following scanning modes for each radio AP.
l scan only the channels that belong to the AP’s regulatory domain
l scan channels that belong to all regulatory domains
l scan all channels
Dell Networking W-Series ArubaOS 6.4.x | User Guide Wireless Intrusion Prevention | 480