Chapter 23 IP Source Guard
MGS-3712/MGS-3012F User’s Guide
196
Figure 108
DHCP Snooping Port Configure
The following table describes the labels in this screen.
Table 69
DHCP Snooping Port Configure
LABEL
DESCRIPTION
Port
This field displays the port number. If you configure the
*
port, the settings
are applied to all of the ports.
Server Trusted state
Select whether this port is a trusted port (
Trusted
) or an untrusted port
(
Untrusted
).
Trusted ports are connected to DHCP servers or other switches, and the
Switch discards DHCP packets from trusted ports only if the rate at which
DHCP packets arrive is too high.
Untrusted ports are connected to subscribers, and the Switch discards
DHCP packets from untrusted ports in the following situations:
•
The packet is a DHCP server packet (for example, OFFER, ACK, or
NACK).
•
The source MAC address and source IP address in the packet do not
match any of the current bindings.
•
The packet is a RELEASE or DECLINE packet, and the source MAC
address and source port do not match any of the current bindings.
•
The rate at which DHCP packets arrive is too high.
Rate (pps)
Specify the maximum number for DHCP packets (1-2048) that the Switch
receives from each port each second. The Switch discards any additional
DHCP packets. Enter 0 to disable this limit, which is recommended for
trusted ports.
Apply
Click
Apply
to save your changes to the Switch’s run-time memory. The
Switch loses these changes if it is turned off or loses power, so use the
Save
link on the top navigation panel to save your changes to the non-
volatile memory when you are done configuring.
Cancel
Click this to reset the values in this screen to their last-saved values.
Содержание MGS-3712
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Страница 7: ...Safety Warnings MGS 3712 MGS 3012F User s Guide 7 ...
Страница 8: ...Safety Warnings MGS 3712 MGS 3012F User s Guide 8 ...
Страница 20: ...Table of Contents MGS 3712 MGS 3012F User s Guide 20 ...
Страница 28: ...List of Tables MGS 3712 MGS 3012F User s Guide 28 ...
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Страница 38: ...Chapter 2 Hardware Installation and Connection MGS 3712 MGS 3012F User s Guide 38 ...
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Страница 70: ...Chapter 6 System Status and Port Statistics MGS 3712 MGS 3012F User s Guide 70 ...
Страница 82: ...Chapter 7 Basic Setting MGS 3712 MGS 3012F User s Guide 82 ...
Страница 84: ...84 ...
Страница 132: ...Chapter 15 Link Aggregation MGS 3712 MGS 3012F User s Guide 132 ...
Страница 142: ...Chapter 17 Port Security MGS 3712 MGS 3012F User s Guide 142 ...
Страница 148: ...Chapter 18 Classifier MGS 3712 MGS 3012F User s Guide 148 Figure 80 Classifier Example ...
Страница 153: ...Chapter 19 Policy Rule MGS 3712 MGS 3012F User s Guide 153 Figure 83 Policy Example ...
Страница 154: ...Chapter 19 Policy Rule MGS 3712 MGS 3012F User s Guide 154 ...
Страница 169: ...Chapter 21 Multicast MGS 3712 MGS 3012F User s Guide 169 Figure 96 MVR Group Configuration Example ...
Страница 170: ...Chapter 21 Multicast MGS 3712 MGS 3012F User s Guide 170 ...
Страница 184: ...Chapter 22 Authentication Accounting MGS 3712 MGS 3012F User s Guide 184 ...
Страница 214: ...Chapter 25 Two Rate Three Color Marker MGS 3712 MGS 3012F User s Guide 214 ...
Страница 215: ...215 PART IV IP Application Static Route 217 DHCP 221 ...
Страница 216: ...216 ...
Страница 220: ...Chapter 26 Static Route MGS 3712 MGS 3012F User s Guide 220 ...
Страница 227: ...Chapter 27 DHCP MGS 3712 MGS 3012F User s Guide 227 Figure 134 DHCP Relay for Two VLANs Configuration Example ...
Страница 228: ...Chapter 27 DHCP MGS 3712 MGS 3012F User s Guide 228 ...
Страница 230: ...230 ...
Страница 256: ...Chapter 30 Diagnostic MGS 3712 MGS 3012F User s Guide 256 ...
Страница 260: ...Chapter 31 Syslog MGS 3712 MGS 3012F User s Guide 260 ...
Страница 273: ...273 PART VI Troubleshooting Product Specifications Troubleshooting 275 Product Specifications 279 ...
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Страница 278: ...Chapter 36 Troubleshooting MGS 3712 MGS 3012F User s Guide 278 ...
Страница 285: ...285 PART VII Appendices and Index Common Services 287 Legal Information 291 Customer Support 295 Index 301 ...
Страница 286: ...286 ...
Страница 290: ...Appendix A Common Services MGS 3712 MGS 3012F User s Guide 290 ...
Страница 294: ...Appendix B Legal Information MGS 3712 MGS 3012F User s Guide 294 ...
Страница 308: ...Index MGS 3712 MGS 3012F User s Guide 308 ...