Omron WE70-AP, Руководство по эксплуатации

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Chapter 1. Overview
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Overview
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Ample wireless LAN security function (* not configured on factory shipment status)
This wireless unit set provides the latest standardized security.It allows communication in FA wireless LAN
only and rejects communication with other wireless LAN, enhancing security.
Following functions are provided for security required in wireless LAN communication.
MAC address filtering ................Access can be permitted to clients (slaves) with MAC addresses registered
in an access point for communication in the same wireless network group.
WEP (RC4)/OCB AES ..............Data transmitted in a wireless network is encrypted based on a set string for
security.For AP-to-AP bridging, OCB AES is recommended.
* Communication will not be available if the other part of the communication uses a different
encryption method or a cryptographic key.
• Others
TKIP/AES ..................................These encryption methods can only be used for a wireless LAN computer
with Windows XP (Service Pack1) with a certain update program applied or
with Windows XP (Service Pack2).
* "TKIP" is stronger than "WEP (RC4)".
* "AES" is a next-generation encryption method stronger than "TKIP".
* "TKIP" and "AES" do not support AP-to-AP bridging.
WOC KEY..................................Omron's proprietary authentication method that uses a Pre-Shared Key as
with TKIP/AES.
* "WOC KEY" do not support AP-to-AP bridging.
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Spanning tree
This function is used to detect a loop of communication between bridges, avoid endless looping of packets,
and create an optimal route.
In a network example shown below, if spanning tree function is enabled for access points (A and B) a loop of
any route is detected and a route with lower priority (route A-B) is shut off as long as no failure is occurring.If
any communication failure occurs in a route between cascade-coupled hubs (route C-D), radio
communication between access points (A and B) is enabled to keep normal operation of the network.
If this function is not used, communication packets on the network endlessly flow through access points (B-
>D->C->A->B).
If the spanning tree function is being enabled, it will take about 30 seconds after inserting a LAN cable before
network communication becomes available,while its LAN indicator may be lit.
To construct a network using the spanning tree function, you must choose a switch or a hub that supports
IEEE802.1d spanning tree protocol.
C
D
To wired LAN
HUB
HUB
To wired LAN
LAN
MO DE
PO WER
WIRE
LESS
LAN
MO
DE
POWE
R
WIRE
LESS
AP-to-AP bridging
AP-CL communication
WE70-AP
WE70-AP
WE70-CL
Looping
Failure
LAN
MO
DE
POWE
R
WIRE
LESS
WE7
0-CL FA W IREL
ES S L
AN AC CE
SS PO
INT
WE7
0-AP FA W
IRE LE SS
LA N AC
CE SS
PO INT
WE7
0-AP
FA
WIRE
LES S L AN
AC CE
SS PO
INT
A A A
B B B