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OLT-1308 Series User’s Guide
155
C
H A P T E R
21
DHCP Relay
This chapter describes the DHCP relay and shows you how to configure the
DHCP Relay
screen.
21.1 DHCP Relay Overview
DHCP (Dynamic Host Configuration Protocol, RFC 2131 and RFC 2132) allows individual
clients to obtain TCP/IP configuration at start-up from a DHCP server. You can configure the
switch to relay client DHCP requests to a DHCP server and the server’s responses back to the
clients.
21.1.1 DHCP “Relay Agent Information Option”
The switch can add information to client DHCP requests that it relays to a DHCP server. This
helps provide authentication about the source of the requests. You can also specify additional
information for the switch to add to the client DHCP requests that it relays to the DHCP server.
Please refer to RFC 3046 for more details.
21.1.2 DHCP Relay Agent Circuit ID Sub-option Format
The DHCP relay agent information feature adds an Agent Information field to the option 82
field of the DHCP headers of client DHCP request frames that the switch relays to a DHCP
server. The Agent Information field that the switch adds contains an “Agent Circuit-ID sub-
option” that includes the following information about where the DHCP request was received.
• Slot ID (1 byte, this is 0 with this model)
• Port ID (1 byte)
• VLAN ID (2 bytes)
• System name (up to 32 bytes, this is optional)
21.2 DHCP Relay Configuration
To configure DHCP relay information and specify the DHCP server(s), click
Advanced
Application
and
DHCP Relay
to display the screen as shown next.
Содержание OLT-1308
Страница 1: ...www zyxel com OLT 1308 Series Optical Line Terminal User s Guide Version 3 60 1 2007 Edition 1 ...
Страница 2: ......
Страница 7: ...Safety Warnings OLT 1308 Series User s Guide 7 ...
Страница 8: ...Safety Warnings OLT 1308 Series User s Guide 8 ...
Страница 28: ...List of Tables OLT 1308 Series User s Guide 28 ...
Страница 29: ...29 PART I Introduction Introducing the OLT 31 Hardware Installation and Connection 35 Hardware Overview 39 ...
Страница 30: ...30 ...
Страница 34: ...Chapter 1 Introducing the OLT OLT 1308 Series User s Guide 34 ...
Страница 38: ...Chapter 2 Hardware Installation and Connection OLT 1308 Series User s Guide 38 ...
Страница 44: ...44 ...
Страница 58: ...Chapter 5 Initial Setup Example OLT 1308 Series User s Guide 58 ...
Страница 72: ...Chapter 6 System Status and Port Statistics OLT 1308 Series User s Guide 72 ...
Страница 94: ...Chapter 7 Basic Setting OLT 1308 Series User s Guide 94 ...
Страница 96: ...96 ...
Страница 106: ...Chapter 8 VLAN OLT 1308 Series User s Guide 106 ...
Страница 116: ...Chapter 11 Spanning Tree Protocol OLT 1308 Series User s Guide 116 ...
Страница 126: ...Chapter 15 Link Aggregation OLT 1308 Series User s Guide 126 ...
Страница 132: ...Chapter 17 Queuing Method OLT 1308 Series User s Guide 132 ...
Страница 138: ...Chapter 18 Classifier OLT 1308 Series User s Guide 138 ...
Страница 143: ...Chapter 19 Policy OLT 1308 Series User s Guide 143 Figure 53 Policy Example ...
Страница 144: ...Chapter 19 Policy OLT 1308 Series User s Guide 144 ...
Страница 158: ...158 ...
Страница 162: ...Chapter 22 Classification Filter Profile OLT 1308 Series User s Guide 162 ...
Страница 172: ...Chapter 23 VLAN Profile OLT 1308 Series User s Guide 172 ...
Страница 184: ...Chapter 26 Destination Filter OLT 1308 Series User s Guide 184 ...
Страница 188: ...Chapter 27 Port Authentication OLT 1308 Series User s Guide 188 ...
Страница 190: ...190 ...
Страница 200: ...Chapter 29 Maintenance OLT 1308 Series User s Guide 200 ...
Страница 212: ...Chapter 30 Access Control OLT 1308 Series User s Guide 212 ...
Страница 218: ...Chapter 32 Syslog OLT 1308 Series User s Guide 218 ...
Страница 224: ...Chapter 33 Cluster Management OLT 1308 Series User s Guide 224 ...
Страница 228: ...Chapter 34 MAC Table OLT 1308 Series User s Guide 228 ...
Страница 232: ...Chapter 36 IGMP Table OLT 1308 Series User s Guide 232 ...
Страница 233: ...233 PART VI Commands and Troubleshooting Introducing the Commands 235 Command Examples 271 Troubleshooting 287 ...
Страница 234: ...234 ...
Страница 285: ...Chapter 38 Command Examples OLT 1308 Series User s Guide 285 ...
Страница 286: ...Chapter 38 Command Examples OLT 1308 Series User s Guide 286 ...
Страница 294: ...Chapter 39 Troubleshooting OLT 1308 Series User s Guide 294 ...
Страница 295: ...295 PART VII Appendix and Index Product Specifications 297 Legal Information 299 Customer Support 303 Index 307 ...
Страница 296: ...296 ...
Страница 302: ...Appendix B Legal Information OLT 1308 Series User s Guide 302 ...
Страница 314: ...Index OLT 1308 Series User s Guide 314 ...