Moore Industries WLM, Руководство по установке

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6 The Interface Solution Experts
WLM
Configuration
In most cases, the WLM comes pre-configured from the factory. However, it may sometimes be necessary to
change the configuration. Most parameters are changed in the radio section of the modem although there are a few
settings that are set using switches. If you are not sure if you need to change the configuration of the WLM, you
probably don’t. Please contact Moore Industries-International, Inc. for further information if you are unsure about your
configuration.
Switch Settings
Access to the switches is via removal of the left side (LAN side) end plate.
Note:
Leave switch positions 4, 5 and 6 at factory setting of off unless otherwise directed by Moore
Industries-International, Inc. Changing these switches requires a radio parameters change.
Mac Filtering Function
All devices capable of generating Ethernet traffic have a MAC (Medium Access Control) address. This address is
used in the communications of Ethernet data.
The WLM is factory set to perform MAC level filtering. This means that it learns all the MAC addresses from the LAN
it is connected to, and only forwards data packets across the radio links which are destined for addresses located
across the radio link.
The MAC address table can store up to 10,000 addresses. Each entry to the table has a lifetime of six minutes after
which the address is deleted. This dynamic table building allows for the possibility of stations being removed from
the LAN. The net result of this filtering functionality is the reduction of unnecessary network traffic across the radio
link.
Any device that does not communicate on the network within a six minute time out period will be dropped from the
radio’s MAC table list. If frequent changes in the LAN cabling are done, cycle the DC power or press the reset button
on the front of the modem.
Note:
Many Ethernet networks have data packets that are not covered by the MAC filter function (broadcast
packets for example). These packets can occupy tremendous amount of the network’s bandwidth and
overwhelm the WLM section of the network. If the WLM’s are going to be installed where they are linked to
an open network (on office network, etc…), a properly configured router or switch should be installed to
protect the modems from excessive data traffic. If you are unsure about your network, please consult with
your network administrator.