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Appendix B
Null Modem Cable
Specifications
The DB-9 cable is used for connecting a terminal or terminal emulator to the
Managed Switch’s RS-232 port to access the command-line interface.
The table below shows the pin assignments for the DB-9 cable.
Function Mnemonic Pin
Carrier CD 1
Receive Data RXD 2
Transmit Data TXD 3
Data Terminal Ready DTR 4
Signal Ground GND 5
Data Set Ready DSR 6
Request To Send RTS 7
Clear To Send CTS 8
9 Pin Null Modem Cable
CD 1 4 DTR
DSR 6 1 CD
DTR 4 6 DSR
RXD 2 3 TXD
TXD 3 2 RXD
GND 5 5 GND
RTS 7 8 CTS
CTS 8 7 RTS
Reserve 9 9 Reserve
- L2 Plus Managed Switch 3
- Table of Contents 5
- Revision History 8
- Caution 9
- Electronic Emission Notices 9
- About this user’s manual 10
- 1. Introduction 11
- Key Features in the Device 12
- 1-2. Checklist 14
- 1-3. Features 14
- LED Color Function 17
- 2. Installation 19
- Fig. 2-2 21
- Table 2-3 28
- Ethernet LAN 29
- 2-1-5. IP Address Assignment 30
- 1 0000000 32
- 1 1111111 32
- Fig. 2-12 34
- 2-2. Typical Applications 35
- 3. Operation of 37
- Web-based Management 37
- Fig. 3-1 38
- Fig. 3-2 39
- 3-1-1. System Information 42
- Fig. 3-4 43
- 3-1-2. Account Configuration 44
- 3-1-3. Time Configuration 45
- Fig. 3-6 47
- 3-1-4. IP Configuration 48
- 3-1-5. Loop Detection 51
- 3-1-6. Management Policy 52
- Fig. 3-9 53
- Fig. 3-10 53
- 3-1-7. Virtual Stack 55
- Desc: 58
- 3-2-1. Port Configuration 60
- 3-2-2.Port Status 62
- Fig. 3-14 63
- 3-2-3. Simple Counter 65
- Auto-refresh: 66
- 3-2-4. Detail Counter 67
- “Clear” button 70
- 3-3. VLAN 71
- 3-3-2. Tag-based Group 72
- 3-3-3. Port-based Group 75
- Fig. 3-23 76
- 3-3-4. Ports 77
- Fig. 3-24 78
- 3-3-5. Management 79
- 3-4. MAC 80
- Fig. 3-26 81
- 3-4-2. Static Filter 82
- 3-4-3. Static Forward 83
- 3-4-4. MAC Alias 84
- 3-4-5. MAC Table 85
- 3-5. GVRP 86
- Fig. 3-31 88
- 3-5-2. Counter 89
- 3-5-3. Group 91
- 3-6-1. Ports 92
- Fig. 3-34 93
- 3-6-2. Qos Control List 94
- Fig. 3-42 97
- 3-6-3.Rate Limiters 100
- 3-6-4.Storm Control 102
- 3-6-5.Wizard 103
- Set up Port Policies Finish 105
- Fig. 3-51 106
- 3-7. SNMP Configuration 113
- 3-8. ACL 115
- Fig. 3-64 116
- 3-8-2.Rate Limiters 117
- 3-8-3.Access Control List 118
- Ingress Port 119
- Fig. 3-69 Frame Type 120
- Fig. 3-70 121
- Fig. 3-118 Rate Limiter 135
- Fig. 3-119 Port Copy 135
- 3-8-4.Wizard 147
- Set up Port Policies 149
- Fig. 3-138 153
- 3-9. IP MAC Binding 156
- 3-10. 802.1X Configuration 158
- MAC Enable 159
- Port Authorize 159
- Fig. 3-54 160
- Table 3-3 162
- 3-10-1.Server 163
- ForceUnauthorized: 165
- ForceAuthorized: 165
- 3-10-3.Status 167
- Fig. 3-145 802.1X Status 168
- 3-10-4. Statistics 169
- 3-11. Trunking Configuration 170
- 3-11-1.Port 172
- 173
- Fig.3-147 Trunk Port Setting 173
- 3-11-2 Aggregator View 174
- 3-11-3 ACP System Priority 175
- 3-12 STP Configuration 176
- Fig. 3-150 STP Status 177
- 3-12-2. Configuration 178
- 3-13-1 Status 183
- 3-13-2 Region Config 184
- Fig. 3-156 185
- Fig. 3-157 185
- Fig. 3-158 185
- Fig. 3-159 185
- Fig. 3-160 185
- Fig. 3-156 Edit MSTI / Vlan 186
- Fig. 3-157 Instance Config 187
- Fig. 3-158 Port Config 188
- Fig. 3-159 Instance Status 189
- Fig. 3-160 Port Status 191
- 3-14. Mirror 193
- 3-15. IGMP Snooping 195
- 3-15-2 Group Membership 197
- Fig.3-61 198
- 3-16-1 Events 199
- 3-17-1. DHCP Snooping State 201
- 3-17-2. DHCP Snooping Entry 202
- 3-17-3. DHCP Snooping Client 203
- 3-18. Configuration 204
- 3-18-1. Factory Defaults 205
- 3-18-2 . Save Start 205
- 3-18-3 . Save User 205
- 3-18-4 . Restore User 206
- 3-19. Config File 207
- 3-20. Diagnostics 208
- 3-20-2 .Ping 209
- 3-20-2 .VeriPHY 210
- 3-21 Maintenance 211
- 3-22 Logout 212
- 4. Operation of CLI 213
- Management 213
- LGB1005A-R2 214
- 4-2. Commands of CLI 215
- 802.1X 222
- account 227
- alarm 233
- autologout 238
- config-file 239
- firmware 239
- hostname 244
- ip_mac_binding 248
- loop-detection 249
- <<alias>> 251
- <<mac-table>> 253
- <<maintenance>> 254
- <<static-mac>> 257
- mirror 259
- per port restricted role 265
- policy 270
- <<ports>> 280
- <<qcl>> 281
- <<rate>> 283
- reboot 285
- <<disable>> 286
- <<enable>> 286
- <<set>> 286
- system 293
- traplog 294
- trunk 297
- 5. Maintenance 306
- Appendix A 307
- Technical Specifications 307
- Hardware Specifications 308
- Appendix B 311
- Null Modem Cable 311
- Specifications 311
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