
Chapter 25 IP Source Guard
GS2200-24/24P User’s Guide
241
25.10 Technical Reference
This section provides technical background information on the topics discussed in
this chapter.
25.10.1 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.
25.10.1.1 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 GS2200-24P Series
Страница 2: ......
Страница 8: ...Safety Warnings GS2200 24 User s Guide 8...
Страница 22: ...22...
Страница 28: ...Chapter 1 Getting to Know Your Switch GS2200 24 24P User s Guide 28...
Страница 32: ...Chapter 2 Hardware Installation and Connection GS2200 24 24P User s Guide 32...
Страница 40: ...Chapter 3 Hardware Panels GS2200 24 24P User s Guide 40...
Страница 42: ...42...
Страница 52: ...Chapter 4 The Web Configurator GS2200 24 24P User s Guide 52...
Страница 90: ...Chapter 8 Basic Setting GS2200 24 24P User s Guide 90...
Страница 92: ...92...
Страница 110: ...Chapter 9 VLAN GS2200 24 24P User s Guide 110 Figure 58 Port Based VLAN Setup Port Isolation...
Страница 116: ...Chapter 10 Static MAC Forward Setup GS2200 24 24P User s Guide 116...
Страница 144: ...Chapter 13 Spanning Tree Protocol GS2200 24 24P User s Guide 144...
Страница 148: ...Chapter 14 Bandwidth Control GS2200 24 24P User s Guide 148...
Страница 152: ...Chapter 15 Broadcast Storm Control GS2200 24 24P User s Guide 152...
Страница 156: ...Chapter 16 Mirroring GS2200 24 24P User s Guide 156...
Страница 166: ...Chapter 17 Link Aggregation GS2200 24 24P User s Guide 166...
Страница 174: ...Chapter 19 Port Security GS2200 24 24P User s Guide 174...
Страница 186: ...Chapter 21 Policy Rule GS2200 24 24P User s Guide 186...
Страница 208: ...Chapter 23 Multicast GS2200 24 24P User s Guide 208...
Страница 246: ...Chapter 25 IP Source Guard GS2200 24 24P User s Guide 246...
Страница 255: ...255 PART IV IP Application Static Route 257 Differentiated Services 261 DHCP 265...
Страница 256: ...256...
Страница 260: ...Chapter 28 Static Route GS2200 24 24P User s Guide 260...
Страница 274: ...274...
Страница 304: ...Chapter 32 Access Control GS2200 24 24P User s Guide 304...
Страница 310: ...Chapter 34 Syslog GS2200 24 24P User s Guide 310...
Страница 318: ...Chapter 35 Cluster Management GS2200 24 24P User s Guide 318...
Страница 322: ...Chapter 36 MAC Table GS2200 24 24P User s Guide 322...
Страница 327: ...327 PART VI Troubleshooting Product Specifications Troubleshooting 329 Product Specifications 333...
Страница 328: ...328...
Страница 340: ...Chapter 40 Product Specifications GS2200 24 24P User s Guide 340...
Страница 341: ...341 PART VII Appendices and Index Changing a Fuse 343 Common Services 345 Legal Information 349 Index 353...
Страница 342: ...342...
Страница 344: ...Appendix A Changing a Fuse GS2200 24 24P User s Guide 344...
Страница 352: ...Appendix C Legal Information GS2200 24 24P User s Guide 352...