Chapter 26 IP Source Guard
MGS3700-12C User’s Guide
283
The following table describes the labels in this screen.
26.5.2 DHCP Snooping VLAN Configure
Use this screen to enable DHCP snooping on each VLAN and to specify whether or
not the Switch adds DHCP relay agent option 82 information (
Chapter 37 on page
349
) to DHCP requests that the Switch relays to a DHCP server for each VLAN. To
Table 85
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 MGS3700-12C
Страница 2: ......
Страница 8: ...Safety Warnings MGS3700 12C User s Guide 8 ...
Страница 24: ...24 ...
Страница 30: ...Chapter 1 Getting to Know Your Switch MGS3700 12C User s Guide 30 ...
Страница 46: ...Chapter 3 Hardware Overview MGS3700 12C User s Guide 46 ...
Страница 56: ...Chapter 4 The Web Configurator MGS3700 12C User s Guide 56 ...
Страница 62: ...Chapter 5 Initial Setup Example MGS3700 12C User s Guide 62 ...
Страница 90: ...Chapter 6 Tutorials MGS3700 12C User s Guide 90 ...
Страница 91: ...91 PART II Basic Configuration System Status and Port Statistics 93 Basic Setting 99 ...
Страница 92: ...92 ...
Страница 114: ...Chapter 8 Basic Setting MGS3700 12C User s Guide 114 ...
Страница 116: ...116 ...
Страница 136: ...Chapter 9 VLAN MGS3700 12C User s Guide 136 ...
Страница 140: ...Chapter 10 Static MAC Forward Setup MGS3700 12C User s Guide 140 ...
Страница 172: ...Chapter 14 Bandwidth Control MGS3700 12C User s Guide 172 ...
Страница 204: ...Chapter 18 MGS3700 12C User s Guide 204 ...
Страница 210: ...Chapter 19 Port Security MGS3700 12C User s Guide 210 ...
Страница 218: ...Chapter 20 Classifier MGS3700 12C User s Guide 218 ...
Страница 226: ...Chapter 21 Policy Rule MGS3700 12C User s Guide 226 ...
Страница 294: ...Chapter 26 IP Source Guard MGS3700 12C User s Guide 294 ...
Страница 316: ...Chapter 31 Error Diable MGS3700 12C User s Guide 316 ...
Страница 330: ...Chapter 33 Private VLAN MGS3700 12C User s Guide 330 ...
Страница 334: ...Chapter 34 Green Ethernet MGS3700 12C User s Guide 334 ...
Страница 335: ...335 PART IV IP Application Static Route 337 Differentiated Services 341 DHCP 349 ...
Страница 336: ...336 ...
Страница 340: ...Chapter 35 Static Route MGS3700 12C User s Guide 340 ...
Страница 356: ...Chapter 37 DHCP MGS3700 12C User s Guide 356 ...
Страница 358: ...358 ...
Страница 366: ...Chapter 38 Maintenance MGS3700 12C User s Guide 366 ...
Страница 388: ...Chapter 39 Access Control MGS3700 12C User s Guide 388 ...
Страница 394: ...Chapter 41 Syslog MGS3700 12C User s Guide 394 ...
Страница 402: ...Chapter 42 Cluster Management MGS3700 12C User s Guide 402 ...
Страница 406: ...Chapter 43 MAC Table MGS3700 12C User s Guide 406 ...
Страница 411: ...Chapter 45 Configure Clone MGS3700 12C User s Guide 411 ...
Страница 412: ...Chapter 45 Configure Clone MGS3700 12C User s Guide 412 ...
Страница 413: ...413 PART VI Troubleshooting Product Specifications Troubleshooting 415 Product Specifications 419 ...
Страница 414: ...414 ...
Страница 428: ...Chapter 47 Product Specifications MGS3700 12C User s Guide 428 ...
Страница 429: ...429 PART VII Appendices and Index Common Services 431 Legal Information 435 Index 417 ...
Страница 430: ...430 ...
Страница 434: ...Appendix A Common Services MGS3700 12C User s Guide 434 ...
Страница 438: ...Appendix B Legal Information MGS3700 12C User s Guide 438 ...