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Chapter 26 IP Source Guard
GS2200-24 User’s Guide
225
The following table describes the labels in this screen.
26.7.2 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 (
) to DHCP requests that the Switch relays to a DHCP server for each VLAN. To
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.
Summary of Contents for GS2200-24 Series
Page 2: ......
Page 8: ...Safety Warnings GS2200 24 User s Guide 8 ...
Page 22: ...Table of Contents GS2200 24 User s Guide 22 ...
Page 24: ...24 ...
Page 30: ...Chapter 1 Getting to Know Your Switch GS2200 24 User s Guide 30 ...
Page 34: ...Chapter 2 Hardware Installation and Connection GS2200 24 User s Guide 34 ...
Page 42: ...42 ...
Page 70: ...Chapter 7 System Status and Port Statistics GS2200 24 User s Guide 70 ...
Page 84: ...Chapter 8 Basic Setting GS2200 24 User s Guide 84 ...
Page 86: ...86 ...
Page 104: ...Chapter 9 VLAN GS2200 24 User s Guide 104 Figure 51 Port Based VLAN Setup Port Isolation ...
Page 110: ...Chapter 10 Static MAC Forward Setup GS2200 24 User s Guide 110 ...
Page 138: ...Chapter 13 Spanning Tree Protocol GS2200 24 User s Guide 138 ...
Page 142: ...Chapter 14 Bandwidth Control GS2200 24 User s Guide 142 ...
Page 146: ...Chapter 15 Broadcast Storm Control GS2200 24 User s Guide 146 ...
Page 150: ...Chapter 16 Mirroring GS2200 24 User s Guide 150 ...
Page 160: ...Chapter 17 Link Aggregation GS2200 24 User s Guide 160 ...
Page 168: ...Chapter 19 Port Security GS2200 24 User s Guide 168 ...
Page 180: ...Chapter 21 Policy Rule GS2200 24 User s Guide 180 ...
Page 192: ...Chapter 23 VLAN Stacking GS2200 24 User s Guide 192 ...
Page 214: ...Chapter 25 AAA GS2200 24 User s Guide 214 ...
Page 240: ...Chapter 26 IP Source Guard GS2200 24 User s Guide 240 ...
Page 250: ...Chapter 28 Layer 2 Protocol Tunneling GS2200 24 User s Guide 250 ...
Page 251: ...251 PART IV IP Application Static Route 253 Differentiated Services 257 DHCP 261 ...
Page 252: ...252 ...
Page 256: ...Chapter 29 Static Route GS2200 24 User s Guide 256 ...
Page 270: ...270 ...
Page 300: ...Chapter 33 Access Control GS2200 24 User s Guide 300 ...
Page 306: ...Chapter 35 Syslog GS2200 24 User s Guide 306 ...
Page 314: ...Chapter 36 Cluster Management GS2200 24 User s Guide 314 ...
Page 318: ...Chapter 37 MAC Table GS2200 24 User s Guide 318 ...
Page 324: ...324 ...
Page 336: ...Chapter 41 Product Specifications GS2200 24 User s Guide 336 ...
Page 338: ...338 ...
Page 340: ...Appendix A Changing a Fuse GS2200 24 User s Guide 340 ...
Page 348: ...Appendix C Legal Information GS2200 24 User s Guide 348 ...
Page 358: ...Index GS2200 24 User s Guide 358 ...