Cisco Cisco WT2750 Multipoint Broadband Wireless System Guía Para Resolver Problemas

erenc
e

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

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

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

Poor
(weak
)
receiv
e
signal
level

Check antenna
alignment
Check
cable/connecto
r integrity
(possible
moisture in
cables) Check
transmit power
level for the
link Check for
path blockage
of link (for
example,
trees,
buildings, etc.)

Change
bandwidth and

Replace faulty
cables if
necessary
Reconfigure
Tx power
setting if
necessary
Realign
antennas

Change the
throughput
setting as a
work-around.
Only change
throughput
settings after you
try the other
solutions given.

Loop
back
enabl
ed

Check the
configuration
and issue the
show run and
show
interface
radio slot/port
commands

Disable
loopback
command

 

Incorr
ect
throu
ghput
settin
g

Check the
configuration,
and issue the
show run
command Run
a histogram to
check the SNR

-
Adjust

accordingly

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

Fault
y
contr
ol
cable
conn
ection
;

Check all
control cable
connections;
wiggle
suspected
control cable
while you
monitor link
status to verify
faulty

Replace cable
or connections
if necessary