Afar AR24027, Руководство оператора

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AR24027 Operator’s Manual
- vi -
4.6 I
NSTALLATION AND
L
INK
M
ONITORING
C
OMMANDS
........................................................................ 4-10
4.7 F
ILE
U
TILITIES
................................................................................................................................... 4-13
4.8 E
VENT
L
OGGING
C
OMMANDS
........................................................................................................... 4-16
4.9 M
ISCELLANEOUS COMMANDS
........................................................................................................... 4-17
5 NETWORK MANAGEMENT .................................................................................... 5-1
5.1 T
ELNET
................................................................................................................................................ 5-1
5.1.1 General ....................................................................................................................................... 5-1
5.1.2 Starting a Telnet Session............................................................................................................. 5-1
5.1.3 Telnet Security ............................................................................................................................ 5-2
5.2 SNMP ................................................................................................................................................. 5-2
5.2.1 Command Line Interface Versus SNMP ..................................................................................... 5-2
5.2.2 What is SNMP?........................................................................................................................... 5-3
5.2.3 Security Considerations in SNMP .............................................................................................. 5-3
5.2.4 Examples of Network Management Systems............................................................................... 5-4
5.2.5 AR24027 Management Information Base (MIB) ........................................................................ 5-4
6 ANTENNAS, SITE SELECTION & PATH ANALYSIS.......................................... 6-1
6.1 L
INK
B
UDGET
C
ALCULATIONS
............................................................................................................ 6-1
6.2 A
NTENNA
S
ELECTION
.......................................................................................................................... 6-2
6.2.1 Antenna Types............................................................................................................................. 6-2
6.2.2 Directionality.............................................................................................................................. 6-2
6.2.3 Gain ............................................................................................................................................ 6-3
6.2.4 Polarization ................................................................................................................................ 6-3
6.3 S
ITE
S
ELECTION
.................................................................................................................................. 6-4
6.3.1 Line-of-Sight Path....................................................................................................................... 6-4
6.3.2 Radio Horizon (Maximum Line-of-Sight Range) ........................................................................ 6-5
6.3.3 Antenna Orientation ................................................................................................................... 6-6
6.3.4 Cable Loss (Attenuation) ............................................................................................................ 6-7
6.3.5 Connector Loss ........................................................................................................................... 6-7
6.4 P
OINT
-
TO
-P
OINT
RF P
ATH
A
NALYSIS
................................................................................................. 6-8
6.4.1 Antenna Height Analysis............................................................................................................. 6-8
6.4.2 Receive Signal Strength Calculation ........................................................................................ 6-10
APPENDIX A – COMMAND SUMMARY ...................................................................... A1
APPENDIX B - SPECIFICATIONS...................................................................................B1
APPENDIX C – CHANNEL FREQUENCY ASSIGNMENT......................................... C1
APPENDIX D – ETHERNET CONSOLE PROGRAM .................................................. D1
APPENDIX E – CABLE DIAGRAMS ...............................................................................E1