MDS 05-2806A01, Rev. A MDS iNET 900 User’s Guide 59
2. Increment the Beacon Period to 508 ms. This will also reduce the
overhead of beacons sent out. On the down side, association time
may be a little longer.
(
Main Menu>Radio Configuration>Beacon Period)
3. Change the Fragmentation Threshold to the maximum of 1600. Longer
packets will be sent over the air reducing overhead. On the down
side, if a packet is corrupted it will take longer to be retransmitted.
(
Main Menu>Radio Configuration>Fragmentation Threshold)
4. Increase the RTS Threshold to 1600. RTS mechanism is used to
reserve a time slot if packets exceed this number. On the down side,
a hidden-node might interfere more often than if RTS is not used.
(
Main Menu>Radio Configuration>RTS Threshold)
5. Use Performance Information Menu to check RSSI by zone.
(Remotes Only /
Main Menu>Performance Information>RSSI by Zone)
Readings should be close in value (±2 dB). A lower value might
indicate interference. You can block the zones that are affected.
(
Main Menu>Radio Configuration>Skip Zone Option)
6. Use Performance Information Menu to check for errors, retries and
dropped packets. Do the same with Ethernet traffic.
With weak signals, interference, or hidden nodes, the optimal per-
formance may be lower due to collisions and retries.
2.9 UPGRADING THE FIRMWARE
2.9.1 Introduction
From time-to-time MDS will offer upgrades to the iNET 900 firmware.
One version of the firmware provides core software resources for all
MDS iNET 900 models. Uploading new firmware into the unit will not
alter any privileges provided by Authorization Keys and does not
require the iNET unit be taken off-line until you want to operate the unit
from the new firmware image in the unit.
You must use the embedded iNET Management System for all firmware
activities, including uploading from a TFTP server.
The uploads can be initiated through any of the three iNET Management
System gateways:
• Terminal-Emulator—Use a terminal emulator program on
your PC, such as HyperTerminal, connected directly to the
iNET
COM1 port via a serial cable.
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