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Technical basics
3.4 iREF
SCALANCE W770/W730 to IEEE 802.11n Web Based Management
34 Configuration Manual, 11/2014, C79000-G8976-C323-03
In particular in applications in which MIMO cannot be used or brings no advantage, this
allows data to be transmitted at the highest possible data transmission rate.
You configure iREF in "iFeatures > iREF"
Requirement
● To be able to use iREF, the device must have at least 2 activated antennas.
Restrictions
● A maximum data rate of only up to 150 Mbps (MCS 0 - 7 or 1 x spatial stream) is possible
● iREF cannot be used along with other iFeatures (for example iPCF or iPCF-MC)
Advantages
● Due to the directional data transmission and dynamic deactivation of antennas that do not
radiate in the direction of the particular client, interference can be reduced.
● The signal strength is improved because the active antenna always has the maximum
permitted transmit power available.
- -G8976-C323-03 1
- Legal information 2
- Table of contents 3
- Table of contents 5
- Introduction 9
- SIMATIC NET manuals 10
- Further documentation 11
- Abbreviations used 11
- SIMATIC NET glossary 12
- Description 13
- 2.1 Network structures 14
- Multichannel configuration 15
- Product characteristics 18
- IEEE 802.11n 20
- MIMO antenna technology 21
- Spatial mutliplexing 21
- Channel bonding 22
- Frame aggregation 22
- Accelerated guard interval 22
- Power over Ethernet (PoE) 24
- Endspan 25
- Midspan 25
- Cable lengths 26
- Technical basics 29
- Adopt Own MAC 30
- Layer 2 Tunnel 30
- 3.3 iPCF / iPCF-MC 31
- Technical basics 32
- 3.3 iPCF / iPCF-MC 32
- Restrictions 33
- Requirements for iPCF-MC 33
- How it works 33
- Requirement 34
- Advantages 34
- NAT/NAPT 36
- Introduction 37
- RSTP, MSTP, CIST 39
- 3.8 Spanning Tree 40
- Structure of an IP address 41
- Configuration options 42
- Properties of DHCP 42
- STEP 7 V5.x and earlier 44
- STEP 7 as of V13 44
- Web Based Management 45
- 5.2 Login 46
- 5.2 Login 47
- Login with HTTP 48
- Login with HTTPS 48
- "Wizard" menu 49
- Buttons you require often 50
- System Settings 50
- Country Settings 52
- IP Address Settings 53
- Management Interfaces 54
- System configuration 54
- Antenna Settings 56
- Radio Settings 57
- 5.3 "Wizard" menu 58
- Access Point Settings 60
- Client Settings 62
- 5.3.1.10 65
- Security Settings 65
- 5.3.1.11 68
- Dot1x Supplicant Settings 68
- 5.3.1.12 69
- Dot1x RADIUS Server Settings 69
- 5.3.1.13 70
- Summary of Settings 70
- Set Values 70
- "Information" menu 71
- Selection area (1) 73
- Display area (2) 73
- Navigation area (3) 74
- Content area (4) 74
- Versions 75
- I&M 77
- ARP Table 78
- Log Tables 79
- Description of the button 80
- WLAN Authentication Log 81
- Error status 82
- Redundancy 83
- Ethernet Statistics 87
- Displayed values 88
- Packet Size 88
- Frames sorted by length 88
- Learning Table 92
- 5.4.11.1 94
- Overview AP 94
- 5.4.11.2 97
- Client List 97
- Logged-on clients 97
- 5.4.11.3 98
- WDS List 98
- 5.4.11.4 100
- Overlap AP 100
- Overlapping channels 100
- Description 100
- 5.4.11.5 101
- Overview Client 101
- Available AP 103
- Available access points 103
- 5.4.11.6 103
- 5.4.11.7 105
- IP Mapping Table 105
- MAC Mode 106
- WLAN Statistics 107
- 5.4.12.2 109
- Management Sent 109
- 5.4.12.3 111
- Management Received 111
- 5.4.12.4 113
- Data Sent 113
- 5.4.12.5 115
- Data Received 115
- WLAN iFeatures 116
- 5.4.13.2 117
- 5.4.13.3 118
- AeroScout 118
- Security 120
- "System" menu 122
- Procedure 124
- General 125
- Coordinates 126
- Agent IP 128
- DNS Client 130
- Restart 131
- 5.5 "System" menu 132
- Commit Control 134
- Load&Save 135
- Passwords 143
- Configuration 145
- Selecting system events 145
- Severity Filter 147
- Setting the severity filter 147
- SMTP Client 148
- 5.5.10.1 150
- DHCP Client 150
- Setting the DHCP mode 150
- 5.5.10.2 152
- DHCP Server 152
- 5.5.10.3 154
- DHCP Options 154
- 5.5.10.4 156
- Static Leases 156
- 5.5.11.1 157
- Configuration of SNMP 157
- 5.5.11.3 160
- 5.5.11.4 162
- System Time 164
- 5.5.12.1 165
- Manual Setting 165
- 5.5.12.2 166
- DST Overview 166
- Settings 167
- 5.5.12.3 168
- DST Configuration 168
- 5.5.12.4 172
- SNTP Client 172
- 5.5.12.5 175
- NTP Client 175
- Auto Logout 178
- Syslog Client 179
- Fault Monitoring 180
- 5.5.15.2 182
- Link Change 182
- Settings for PROFINET IO 183
- SCALANCE W700 and STEP 7 184
- PNIO for client devices 185
- 5.5.17.1 185
- 5.5.17.2 188
- License 188
- "Interfaces" menu 192
- Configuring ports 193
- Basic settings 195
- Advanced 199
- Further possible settings 199
- Antennas 201
- Overview 201
- Steps in configuration 203
- Allowed Channels 204
- Channel settings 204
- 802.11n 206
- Properties of 802.11n 206
- AP 802.11a/b/g Rates 212
- AP 802.11n Rates 214
- 5.6.2.10 217
- Connecting to a network 217
- 5.6.2.11 220
- Signal Recorder 220
- Notes on usage 221
- Measurement results 222
- "Layer 2" menu 225
- Port-based VLAN 228
- Processing received frames 228
- Dynamic MAC Aging 230
- Spanning Tree 231
- CIST General 233
- MSTP-CIST configuration 233
- 5.7 "Layer 2" menu 234
- MST general 239
- MST Port 240
- DCP Forwarding 242
- "Layer 3" menu 245
- "Security" menu 248
- Safety levels 249
- AP Communication 252
- Communications options 252
- AP Radius Authenticator 254
- Client Radius Supplicant 256
- Client Supplicant 256
- Management ACL 258
- Inter AP blocking 260
- Allowed address 262
- "iFeatures" menu 263
- Access point mode 264
- Client mode 265
- When should iPCF-MC be used? 267
- When should iREF be used? 268
- Upkeep and maintenance 271
- Troubleshooting/FAQ 273
- Solution 274
- Mixed mode 275
- Troubleshooting/FAQ 276
- Appendix A 277
- Appendix A 278
- Appendix B 279
- Appendix B 280
- Appendix C 281
- Appendix C 282
- C.1 Underlying standards 282
- Appendix D 283
- Messages on configuration 284
- Messages error status 285
- Messages about MSTP 286
- Messages about security 286
- Messages about PLUG 287
- Messages in client mode 288
- Index 289
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