Chapter 26 IP Source Guard
GS2200-24 User’s Guide
235
26.12 Technical Reference
This section provides technical background information on the topics discussed in
this chapter.
26.12.1 DHCP Snooping Overview
Use DHCP snooping to filter unauthorized DHCP packets on the network and to
build the binding table dynamically. This can prevent clients from getting IP
addresses from unauthorized DHCP servers.
26.12.1.1 Trusted vs. Untrusted Ports
Every port is either a trusted port or an untrusted port for DHCP snooping. This
setting is independent of the trusted/untrusted setting for ARP inspection. You can
also specify the maximum number for DHCP packets that each port (trusted or
untrusted) can receive each second.
VID
This field displays the VLAN ID of each VLAN in the range specified
above. If you configure the
*
VLAN, the settings are applied to all
VLANs.
Enabled
Select
Yes
to enable ARP inspection on the VLAN. Select
No
to disable
ARP inspection on the VLAN.
Log
Specify when the Switch generates log messages for receiving ARP
packets from the VLAN.
None
: The Switch does not generate any log messages when it
receives an ARP packet from the VLAN.
Deny
: The Switch generates log messages when it discards an ARP
packet from the VLAN.
Permit
: The Switch generates log messages when it forwards an ARP
packet from the VLAN.
All
: The Switch generates log messages every time it receives an ARP
packet from the VLAN.
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.
Table 76
ARP Inspection VLAN Configure (continued)
LABEL
DESCRIPTION
Содержание GS2200-24 Series
Страница 2: ......
Страница 8: ...Safety Warnings GS2200 24 User s Guide 8 ...
Страница 22: ...Table of Contents GS2200 24 User s Guide 22 ...
Страница 24: ...24 ...
Страница 30: ...Chapter 1 Getting to Know Your Switch GS2200 24 User s Guide 30 ...
Страница 34: ...Chapter 2 Hardware Installation and Connection GS2200 24 User s Guide 34 ...
Страница 42: ...42 ...
Страница 70: ...Chapter 7 System Status and Port Statistics GS2200 24 User s Guide 70 ...
Страница 84: ...Chapter 8 Basic Setting GS2200 24 User s Guide 84 ...
Страница 86: ...86 ...
Страница 104: ...Chapter 9 VLAN GS2200 24 User s Guide 104 Figure 51 Port Based VLAN Setup Port Isolation ...
Страница 110: ...Chapter 10 Static MAC Forward Setup GS2200 24 User s Guide 110 ...
Страница 138: ...Chapter 13 Spanning Tree Protocol GS2200 24 User s Guide 138 ...
Страница 142: ...Chapter 14 Bandwidth Control GS2200 24 User s Guide 142 ...
Страница 146: ...Chapter 15 Broadcast Storm Control GS2200 24 User s Guide 146 ...
Страница 150: ...Chapter 16 Mirroring GS2200 24 User s Guide 150 ...
Страница 160: ...Chapter 17 Link Aggregation GS2200 24 User s Guide 160 ...
Страница 168: ...Chapter 19 Port Security GS2200 24 User s Guide 168 ...
Страница 180: ...Chapter 21 Policy Rule GS2200 24 User s Guide 180 ...
Страница 192: ...Chapter 23 VLAN Stacking GS2200 24 User s Guide 192 ...
Страница 214: ...Chapter 25 AAA GS2200 24 User s Guide 214 ...
Страница 240: ...Chapter 26 IP Source Guard GS2200 24 User s Guide 240 ...
Страница 250: ...Chapter 28 Layer 2 Protocol Tunneling GS2200 24 User s Guide 250 ...
Страница 251: ...251 PART IV IP Application Static Route 253 Differentiated Services 257 DHCP 261 ...
Страница 252: ...252 ...
Страница 256: ...Chapter 29 Static Route GS2200 24 User s Guide 256 ...
Страница 270: ...270 ...
Страница 300: ...Chapter 33 Access Control GS2200 24 User s Guide 300 ...
Страница 306: ...Chapter 35 Syslog GS2200 24 User s Guide 306 ...
Страница 314: ...Chapter 36 Cluster Management GS2200 24 User s Guide 314 ...
Страница 318: ...Chapter 37 MAC Table GS2200 24 User s Guide 318 ...
Страница 323: ...323 PART VI Troubleshooting Product Specifications Troubleshooting 325 Product Specifications 329 ...
Страница 324: ...324 ...
Страница 336: ...Chapter 41 Product Specifications GS2200 24 User s Guide 336 ...
Страница 337: ...337 PART VII Appendices and Index Changing a Fuse 339 Common Services 341 Legal Information 345 Index 349 ...
Страница 338: ...338 ...
Страница 340: ...Appendix A Changing a Fuse GS2200 24 User s Guide 340 ...
Страница 348: ...Appendix C Legal Information GS2200 24 User s Guide 348 ...
Страница 358: ...Index GS2200 24 User s Guide 358 ...