Brocade Mobility RFS Controller CLI Reference Guide (Supporting software release 5.5.0.0 and later) - Manual (Page 1139)

Brocade Mobility RFS Controller CLI Reference Guide 1131
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20
The 20/40 MHz operation allows the access point to receive packets from clients using 20 MHz,
and transmit using 40 MHz. This mode is supported for 11n users on both the 2.4 GHz and 5.0
GHz radios. If an 11n user selects two channels (a primary and secondary channel), the system is
configured for dynamic 20/40 operation. When 20/40 is selected, clients can take advantage of
wider channels. 802.11n clients experience improved throughput using 40 MHz while legacy
clients (either 802.11a or 802.11b/g depending on the radio selected) can still be serviced without
interruption using 20 MHz. Select Automatic to enable automatic assignment of channels to
working radios to avoid channel overlap and avoid interference from external RF sources.
Example
rfs7000-37FABE(config-smart-rf-policy-test)#channel-width 5 auto
rfs7000-37FABE(config-smart-rf-policy-test)#show context
smart-rf-policy test
area test channel-list 2.4GHz 1,2,3
assignable-power 5GHz min 8
assignable-power 5GHz max 20
channel-list 2.4GHz 1,12
channel-width 5GHz auto
rfs7000-37FABE(config-smart-rf-policy-test)#
Related Commands:
coverage-hole-recovery
smart-rf-policy
Enables recovery from coverage hole errors detected by Smart RF. Use this command to configure
the coverage hole recovery settings.
When coverage hole recovery is enabled, on detection of a coverage hole, Smart RF first
determines the power increase needed based on the signal-to-noise ratio (SNR) for a client as seen
by the access point radio. If a client’s SNR is above the specified threshold, the transmit power is
increased until the SNR falls below the threshold.
Supported in the following platforms:
• Access Points — Brocade Mobility 650 Access Point, Brocade Mobility 6511 Access Point,
Brocade Mobility 1220 Access Point, Brocade Mobility 71XX Access Point, Brocade
Mobility 1240 Access Point
• Wireless Controllers — Brocade Mobility RFS4000, Brocade Mobility RFS6000, Brocade
Mobility RFS7000
• Service Platforms — Brocade Mobility RFS9510
Syntax:
coverage-hole-recovery
{client-threshold|coverage-interval|interval|snr-threshold}
coverage-hole-recovery {client-threshold [2.4GHz|5GHz] <1-255>}
coverage-hole-recovery {coverage-interval|interval} [2.4GHz|5GHz] <1-120>
coverage-hole-recovery {snr-threshold [2.4Ghz|5Ghz] <1-75>}
no Resets channel width for the selected frequency to its default