Cisco Cisco WT2750 Multipoint Broadband Wireless System Guide De Dépannage

connection

Radio
interfa
ce
shutdo
wn

Check the
configuratio
n and issue
the show
interface
radio
slot/port
command

No shut the
radio interface

Note that if this is
the problem, the
output of show
interface will
display "Radio x is
administratively
down"

Interfer
ence

Run
histograms
and/or
snapshots;
measure
SNR and
Rx signal
level at both
ends of the
link

Try to locate
source of
interference
(for example,
nearby
antennas)
Change
polarization of
antennas or
frequency
channel (UNII
only)

If interference is
the source of
trouble, the SNR
readings must
show a
degradation that
correlates in time
with the noted
periods of poor
link performance
or outages

Wirele
ss line
card
faulty

Run IF and
RF
loopback
tests and
ping the
radio
interface to
verify

Replace line
card

 

Freque
ncies
config
ured
incorre
ctly

Check
configuratio
n, and issue
the show
run
command

Fix the
configuration;
Tx at one end
of the link
matches to the
Rx of the other
end

 

Radio
ARQ
config
ured
incorre
ctly

Check the
configuratio
n, and issue
the show
interface
radio arq
command

Fix the
configuration

This parameter
must be set the
same at both ends
of the link

Numb

Check the

Fix the