Serial Port And Remote Serial Statistics Menu; Diagnostic Tools - GE MDS entraNET 900 Technical Manual

05-4055A01, Rev. E
The most significant fields are
. If the data values are more than 10% of their sent
Lost Carrier Detected
and received counterparts, or the
than a few dozen, there might be trouble with interference, or a loss of
the Ethernet signal. Note that this does not refer to the over-the-air (RF)
carrier, but only to the Ethernet carrier.
When troubleshooting throughput quality issues, a check should also be
made of the Radio Packet Statistics Screen shown in
Page 81. This menu provides a review of packet statistics from a radio
link (RF) perspective.
It is also helpful to check the RSSI of incoming signals. If the RSSI
levels in each zone are within a few decibels (dB) of each other, but less
than –90 dBm, then check the aiming of the antenna system.
See "Aiming Directive Antennas for Maximum RSSI" on Page 162
details.
NOTE: The average signal level should be –95 dBm or stronger for
reliable performance with an allowance for fade margin.
Another place to look for trouble is in
packets should be evenly distributed across all zones (1-5% variation).
If they are not, interference in the disparate zones should be suspected.
Blocking these zones can eliminate or reduce harmful interference.
See "Skip Zones Menu" on Page 53
When dealing with radio interference troubles, be sure to review
About Radio Interference

Serial Port and Remote Serial Statistics Menu

(See Figure 3-43 on Page 79
This screen provides top-level information on data exchanges between
the radio serial ports and the network through the wireless and the
Ethernet (data) layers. These include:
• Bytes In On Port xxx
• Bytes Out On Port xxx
You can use this information as an indicator of port activity at the data
and IP levels.

Diagnostic Tools

(See MAINTENANCE AND TOOLS
The AP Maintenance Menu contains a tool that is especially useful to
network technicians—the
reachability of Ethernet devices connected to the network.
MDS entraNET Technical Manual
,
Retries Retry Errors
Lost Carrier Detected
Packets Received by Zone
for more information.
on Page 150.
for detailed information)
• Bytes In On Socket xxx
• Bytes Out On Socket xxx
on Page 85)
utility. Use the
PING
, , and
Receive Errors
value is greater
Figure 3-45 on
for
. The
A Word
utility to verify the
PING
171