Zyxel-communications P-660R-Tx v2 Series Manuel d'utilisateur Page 168
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P-660R-Tx v2 Series User’s Guide
Virtual Circuit Topology 169
APPENDIX H
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:
Figure 100 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.
• Virtual Channel Logical connections between ATM switches
• Virtual Path A bundle of virtual channels
• Virtual Circuits A series of virtual paths between circuit end point
- P-660R-Tx v2 Series 1
- Copyright 2
- Certifications 3
- Safety Warnings 4
- ZyXEL Limited Warranty 5
- Customer Support 6
- 8 Customer Support 7
- Customer Support 9 8
- 10 Customer Support 9
- Customer Support 11 10
- 12 Customer Support 11
- Table of Contents 12
- Virtual Circuit Topology169 17
- Index171 17
- List of Figures 18
- 22 List of Figures 21
- List of Tables 22
- About This User's Guide 24
- Syntax Conventions 24
- Related Documentation 24
- User Guide Feedback 25
- Graphics Icons Key 25
- CHAPTER 1 26
- Networking Compatibility 29
- Multiplexing 29
- Encapsulation 29
- Network Management 29
- Other PPPoE Features 30
- Diagnostics Capabilities 30
- Packet Filters 30
- Ease of Installation 30
- 1.2.1 Internet Access 31
- 1.2.2 LAN to LAN Application 31
- 1.4 Front Panel LEDs 32
- CHAPTER 2 34
- Figure 3 Password Screen 35
- 2.2.1 Using the Reset Button 36
- CHAPTER 3 38
- 3.1.2 Multiplexing 39
- 3.1.3 VPI and VCI 39
- Chapter 3 Wizard Setup 41 40
- 3.2.1 IP Address Assignment 41
- 3.2.3 NAT 42
- 44 Chapter 3 Wizard Setup 43
- Chapter 3 Wizard Setup 45 44
- 46 Chapter 3 Wizard Setup 45
- 3.2.5 DHCP Setup 46
- 48 Chapter 3 Wizard Setup 47
- Chapter 3 Wizard Setup 49 48
- 50 Chapter 3 Wizard Setup 49
- CHAPTER 4 50
- 52 Chapter 4 Password Setup 51
- CHAPTER 5 52
- 5.2 DNS Server Address 53
- 5.4 LAN TCP/IP 54
- 5.5 Any IP 55
- 5.5.1 How Any IP Works 56
- 5.6 Configuring LAN 57
- Chapter 5 LAN Setup 59 58
- 60 Chapter 5 LAN Setup 59
- CHAPTER 6 60
- 6.3 PPPoE Encapsulation 61
- 6.4 Traffic Shaping 61
- 6.6 Configuring WAN Setup 62
- 64 Chapter 6 WAN Setup 63
- Figure 19 WAN Setup (PPPoE) 63
- Table 12 WAN Setup 63
- Chapter 6 WAN Setup 65 64
- 6.7 Traffic Redirect 65
- 6.8 Configuring WAN Backup 66
- 68 Chapter 6 WAN Setup 67
- Figure 22 WAN Backup 67
- Table 13 WAN Backup 67
- Check WAN IP Address 68
- 70 Chapter 6 WAN Setup 69
- CHAPTER 7 70
- 7.1.2 What NAT Does 71
- 7.1.3 How NAT Works 71
- 7.1.4 NAT Application 72
- 7.1.5 NAT Mapping Types 72
- Table 15 NAT Mapping Types 73
- 7.3 SUA Server 74
- 7.4 Selecting the NAT Mode 75
- 7.5 Configuring SUA Server 76
- CHAPTER 8 82
- Figure 30 Dynamic DNS 83
- Table 21 Dynamic DNS 83
- CHAPTER 9 84
- 86 Chapter 9 Time and Date 85
- Table 22 Time and Date 85
- CHAPTER 10 86
- 10.2 Telnet 87
- 10.3 FTP 87
- 10.4 Web 87
- Figure 33 Remote Management 88
- Table 23 Remote Management 88
- CHAPTER 11 90
- 11.2 UPnP and ZyXEL 91
- Figure 34 Configuring UPnP 92
- Table 24 Configuring UPnP 92
- Components selection box 93
- Figure 44 System Tray Icon 99
- Network 100
- CHAPTER 12 102
- 104 Chapter 12 Maintenance 103
- Figure 49 System Status 103
- Table 25 System Status 103
- 12.2.1 System Statistics 104
- 12.3 DHCP Table Screen 105
- 12.4 Any IP Table Screen 106
- 12.5 Diagnostic Screens 107
- Chapter 12 Maintenance 109 108
- 12.6 Firmware Screen 109
- Chapter 12 Maintenance 111 110
- Figure 55 Firmware Upgrade 110
- Table 31 Firmware Upgrade 110
- 12.7 Configuration Screen 111
- 12.7.2 Restore Configuration 112
- 114 Chapter 12 Maintenance 113
- ZyXEL Device 114
- 116 Chapter 12 Maintenance 115
- CHAPTER 13 116
- Figure 64 Pop-up Blocker 120
- Figure 65 Internet Options 120
- Figure 66 Internet Options 121
- 13.9.1.2 JavaScripts 122
- 3 Scroll down to Scripting 123
- 13.9.1.3 Java Permissions 124
- 13.9.1.3.1 JAVA (Sun) 125
- Figure 71 Java (Sun) 126
- APPENDIX A 128
- Table 44 Firmware 129
- APPENDIX B 132
- Installing Components 133
- Configuring 134
- Windows 2000/NT/XP 135
- Macintosh OS 8/9 140
- Macintosh OS X 142
- Verifying Settings 143
- Using Configuration Files 145
- APPENDIX C 148
- Subnet Masks 150
- Subnetting 150
- Example: Two Subnets 151
- Example: Four Subnets 152
- Example Eight Subnets 153
- Table 56 Eight Subnets 154
- APPENDIX D 156
- ZyXEL Device With ISDN 157
- APPENDIX E 160
- APPENDIX F 162
- Table 63 PPP Logs 164
- Table 64 ICMP Notes 164
- APPENDIX G 166
- How PPPoE Works 167
- APPENDIX H 168
- 170 Virtual Circuit Topology 169
- Index 171 170
- 172 Index 171
- Index 173 172
- 174 Index 173
- Index 175 174
- 176 Index 175
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