Zyxel-communications ADSL2+ Ethernet/USB Gateway 660RU-Tx Series Manuale Utente Pagina 271
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Appendix E 270
Appendix E
Virtual Circuit Topology
ATM is a connection-oriented technology, meaning that it sets up virtual circuits over which
end systems communicate. The terminology for virtual circuits is as follows:
• Virtual Channel Logical connections between ATM switches
• Virtual Path A bundle of virtual channels
• Virtual CircuitA series of virtual paths between circuit end points
Figure 186 Virtual Circuit Topology
Think of a virtual path as a cable that contains a bundle of wires. The cable connects two
points and wires within the cable provide individual circuits between the two points. In an
ATM cell header, a VPI (Virtual Path Identifier) identifies a link formed by a virtual path; a
VCI (Virtual Channel Identifier) identifies a channel within a virtual path.
The VPI and VCI identify a virtual path, that is, termination points between ATM switches. A
series of virtual paths make up a virtual circuit.
Your ISP (Internet Service Provider) should supply you with VPI/VCI numbers.
- Prestige 660RU-Tx Series 1
- Copyright 3
- Federal Communications 4
- Commission (FCC) Interference 4
- Statement 4
- ZyXEL Limited Warranty 5
- Customer Support 6
- Table of Contents 7
- Chapter 4 8
- Chapter 5 8
- List of Figures 17
- List of Tables 23
- About This User's Guide 27
- Syntax Conventions 27
- Related Documentation 27
- User Guide Feedback 28
- Graphics Icons Key 28
- Introduction to DSL 29
- 29 Introduction to DSL 30
- CHAPTER 1 31
- Protocol Support 34
- Networking Compatibility 34
- Multiplexing 34
- 1.1.2.1 Internet Access 36
- 1.1.4 Front Panel LEDs 37
- CHAPTER 2 39
- 2.1.2 Resetting the Prestige 40
- CHAPTER 3 43
- 3.1.2 Multiplexing 44
- 3.1.3 VPI and VCI 44
- Chapter 3 Wizard Setup 44 45
- 3.2.1 IP Address Assignment 46
- 3.2.3 NAT 47
- 47 Chapter 3 Wizard Setup 48
- Chapter 3 Wizard Setup 48 49
- 49 Chapter 3 Wizard Setup 50
- 3.2.5 DHCP Setup 51
- 51 Chapter 3 Wizard Setup 52
- Chapter 3 Wizard Setup 52 53
- 53 Chapter 3 Wizard Setup 54
- CHAPTER 4 55
- 55 Chapter 4 Password Setup 56
- CHAPTER 5 57
- 5.2 DNS Server Address 58
- 5.4 LAN TCP/IP 59
- 5.5 Any IP 60
- 5.5.1 How Any IP Works 61
- 5.6 Configuring LAN 62
- Chapter 5 LAN Setup 62 63
- 63 Chapter 5 LAN Setup 64
- CHAPTER 6 65
- 6.3 PPPoE Encapsulation 66
- 6.4 Traffic Shaping 66
- 6.6 Configuring WAN Setup 67
- 67 Chapter 6 WAN Setup 68
- Figure 19 WAN Setup (PPPoE) 68
- Table 12 WAN Setup 68
- Chapter 6 WAN Setup 68 69
- 6.7 Traffic Redirect 70
- 6.8 Configuring WAN Backup 71
- 71 Chapter 6 WAN Setup 72
- Figure 22 WAN Backup 72
- Table 13 WAN Backup 72
- Check WAN IP Address 73
- 73 Chapter 6 WAN Setup 74
- CHAPTER 7 75
- 7.1.2 What NAT Does 76
- 7.1.3 How NAT Works 76
- 7.1.4 NAT Application 77
- 7.1.5 NAT Mapping Types 77
- Table 15 NAT Mapping Types 78
- 7.3 SUA Server 79
- 7.4 Selecting the NAT Mode 80
- 7.5 Configuring SUA Server 81
- CHAPTER 8 87
- Figure 30 Dynamic DNS 88
- Table 21 Dynamic DNS 88
- CHAPTER 9 89
- 89 Chapter 9 Time and Date 90
- Table 22 Time and Date 90
- CHAPTER 10 91
- 10.2 Telnet 92
- 10.3 FTP 92
- 10.4 Web 92
- Figure 33 Remote Management 93
- Table 23 Remote Management 93
- CHAPTER 11 95
- 11.2 UPnP and ZyXEL 96
- Figure 44 System Tray Icon 104
- Network 105
- CHAPTER 12 109
- 109 Chapter 12 Maintenance 110
- Figure 49 System Status 110
- Table 25 System Status 110
- 12.2.1 System Statistics 111
- 12.3 DHCP Table Screen 112
- 12.4 Any IP Table Screen 113
- 12.5 Diagnostic Screens 114
- Chapter 12 Maintenance 114 115
- 12.6 Firmware Screen 117
- 117 Chapter 12 Maintenance 118
- Figure 57 Error Message 118
- CHAPTER 13 119
- Prestige 120
- ? > or 121
- Table 33 SMT Main Menu 122
- Table 34 Main Menu Summary 122
- 1234", and 123
- CHAPTER 14 125
- CHAPTER 15 129
- Press ENTER to Confirm 130
- CHAPTER 16 133
- CHAPTER 17 137
- 17.4 IP Alias Setup 138
- 17.5 Route IP Setup 139
- Menu 4 Internet Access Setup 141
- CHAPTER 18 143
- 18.4 Remote Node Filter 149
- Figure 79 Internet Security 150
- 18.5.3 Advance Setup Options 153
- CHAPTER 19 155
- CHAPTER 20 159
- 159 Chapter 20 Bridging Setup 160
- 161 Chapter 20 Bridging Setup 162
- CHAPTER 21 163
- 21.3 NAT Setup 165
- 21.3.1.3 Ordering Your Rules 168
- 21.5 General NAT Examples 171
- Figure 106 NAT Example 2 172
- Figure 108 NAT Example 3 174
- Figure 113 NAT Example 4 176
- CHAPTER 22 179
- Filter Rule 180
- Filter Set 180
- 22.4.1 TCP/IP Filter Rule 183
- 22.4.2 Generic Filter Rule 186
- Length= 0 187
- 22.5 Filter Types and NAT 188
- 22.6 Example Filter 188
- 22.7.1 Ethernet Traffic 191
- 22.7.2 Remote Node Filters 191
- CHAPTER 23 193
- 23.2 Supported MIBs 194
- 23.3 SNMP Configuration 194
- 23.4 SNMP Traps 195
- CHAPTER 24 197
- 24.3 System Information 199
- 24.3.2 Console Port Speed 200
- 24.4 Log and Trace 201
- 24.4.2 Syslog and Accounting 202
- 24.5 Diagnostic 204
- CHAPTER 25 207
- 25.2 Backup Configuration 208
- 25.2.4 GUI-based FTP Clients 210
- 25.2.7 TFTP Command Example 211
- 25.3 Restore Configuration 212
- 25.4.1 Firmware File Upload 214
- 25.4.5 TFTP File Upload 216
- CHAPTER 26 219
- 26.2 Call Control Support 220
- 26.3 Time and Date Setting 221
- 26.3.1 Resetting the Time 222
- CHAPTER 27 225
- 27.4 System Timeout 227
- CHAPTER 28 229
- 28.4 IP Routing Policy Setup 230
- 28.5 Applying an IP Policy 233
- IP=0.0.0.0 236
- CHAPTER 29 239
- CHAPTER 30 243
- Appendix A 247
- Splitters and Microfilters 247
- Prestige With ISDN 248
- Appendix B 249
- Installing Components 250
- Configuring 251
- Windows 2000/NT/XP 252
- Appendix B 252 253
- 253 Appendix B 254
- Appendix B 254 255
- Macintosh OS 8/9 256
- Appendix B 256 257
- Macintosh OS X 258
- Verifying Settings 259
- 259 Appendix B 260
- Appendix C 261
- IP Subnetting 261
- Subnet Masks 262
- Subnetting 262
- Example: Two Subnets 263
- 263 Appendix C 264
- Table 88 Subnet 1 264
- Table 89 Subnet 2 264
- Example: Four Subnets 265
- Example Eight Subnets 266
- Appendix C 266 267
- 267 Appendix C 268
- Appendix D 269
- How PPPoE Works 270
- Prestige as a PPPoE Client 270
- Appendix E 271
- Virtual Circuit Topology 271
- 271 Appendix E 272
- Appendix F 273
- Command Interpreter 273
- 273 Appendix F 274
- Appendix G 275
- Log Descriptions 275
- Appendix G 276 277
- Table 102 PPP Logs 277
- Table 103 ICMP Notes 277
- 277 Appendix G 278
- Table 104 Syslog Logs 278
- Appendix G 278 279
- 279 Appendix G 280
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