Acksys ETHERNET TO Wi-Fi GATEWAYS, Руководство пользователя

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DTUS065 rev A.7 – June 27, 2014
TABLE OF CONTENTS
I INTRODUCTION .......................................................................................................................................... 6
II PRODUCTS LINE OVERVIEW .................................................................................................................. 8
II.1 PRODUCTS GOALS ............................................................................................................................... 8
II.2 PRODUCTS COMMON FEATURES ..................................................................................................... 8
II.3 PRODUCTS RANGE............................................................................................................................... 9
III DEVICE INSTALLATION ..................................................................................................................... 10
III.1 POWER SUPPLY .................................................................................................................................. 10
III.2 ANTENNA TYPES ................................................................................................................................ 10
III.2.1 Omnidirectional antenna ................................................................................................................. 10
III.2.2 Patch antenna .................................................................................................................................. 11
III.2.3 Yagi antenna ................................................................................................................................... 11
III.2.4 Dish antenna ................................................................................................................................... 12
III.2.5 MIMO antenna ............................................................................................................................... 12
III.3 ANTENNA INSTALLATION ............................................................................................................... 12
III.3.1 Non 802.11n case ........................................................................................................................... 12
III.3.2 802.11n ........................................................................................................................................... 13
III.4 RADIO CHANNEL CHOICE ................................................................................................................ 14
III.5 REGULATORY DOMAIN RULES ...................................................................................................... 15
III.6 ANTENNA GAIN AND RF OUTPUT POWER ................................................................................... 15
III.6.1 FCC rules for 2.4 GHz band ........................................................................................................... 16
III.6.2 FCC rules for 5 GHz band .............................................................................................................. 17
IV ADMINISTRATION OVERVIEW ........................................................................................................ 18
IV.1 WEB INTERFACE ................................................................................................................................ 18
IV.2 RESET PUSHBUTTON......................................................................................................................... 18
IV.3 ACKSYS NDM ...................................................................................................................................... 18
IV.4 EMERGENCY UPGRADE ................................................................................................................... 18
IV.5 SNMP AGENT ....................................................................................................................................... 18
V TECHNICAL REFERENCE ...................................................................................................................... 19
V.1 ADDRESSING IN NETWORK PROTOCOLS ..................................................................................... 19
V.1.1 TCP/IP network layers .................................................................................................................... 19
V.1.2 LAN layer: network interfaces ....................................................................................................... 21
V.1.3 IP layer: IP addresses and routing................................................................................................... 22
V.2 WIRELESS ARCHITECTURES ........................................................................................................... 25
V.2.1 Infrastructure Mode ........................................................................................................................ 25
V.2.2 Ad-hoc Mode .................................................................................................................................. 27
V.2.3 Mesh (802.11s) Mode ..................................................................................................................... 28
V.2.4 Wireless Network Name ................................................................................................................. 29
V.2.5 Virtual AP (multi-SSID) and multifunction cards .......................................................................... 29
V.3 802.11 MODES ...................................................................................................................................... 30
V.3.1 802.11b ........................................................................................................................................... 30
V.3.2 802.11g ........................................................................................................................................... 30
V.3.3 802.11a ........................................................................................................................................... 30
V.3.4 802.11n ........................................................................................................................................... 31
V.4 802.11 CHANNELS & INTERNATIONAL COMPATIBILITY .......................................................... 32
V.5 WIRELESS SECURITY ........................................................................................................................ 34
V.5.1 WEP encryption .............................................................................................................................. 34
V.5.2 WPA/WPA2 encryption ................................................................................................................. 35