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Chapter 26 IP Source Guard
GS2200-24 User’s Guide
216
• Use the
DHCP VLAN Configure
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.
• Use the
ARP Inspection Status
screen (
) to look at
the current list of MAC address filters that were created because the Switch
identified an unauthorized ARP packet.
• Use the
ARP Inspection VLAN Status
screen (
) to
look at various statistics about ARP packets in each VLAN.
• Use the
ARP Inspection Log Status
screen (
) to
look at log messages that were generated by ARP packets and that have not
been sent to the syslog server yet.
• Use the
ARP Inspection Configure
screen (
) to
enable ARP inspection on the Switch. You can also configure the length of time
the Switch stores records of discarded ARP packets and global settings for the
ARP inspection log.
• Use the
ARP Inspection Port Configure
screen (
) to specify whether ports are trusted or untrusted ports for ARP inspection.
• Use the
ARP Inspection VLAN Configure
screen (
) to enable ARP inspection on each VLAN and to specify when the Switch
generates log messages for receiving ARP packets from each VLAN.
26.3 What You Need to Know
The Switch builds the binding table by snooping DHCP packets (dynamic bindings)
and from information provided manually by administrators (static bindings).
IP source guard consists of the following features:
• Static bindings. Use this to create static bindings in the binding table.
• DHCP snooping. Use this to filter unauthorized DHCP packets on the network
and to build the binding table dynamically.
• ARP inspection. Use this to filter unauthorized ARP packets on the network.
If you want to use dynamic bindings to filter unauthorized ARP packets (typical
implementation), you have to enable DHCP snooping before you enable ARP
inspection.
26.4 IP Source Guard
Use this screen to look at the current bindings for DHCP snooping and ARP
inspection. Bindings are used by DHCP snooping and ARP inspection to distinguish
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 ...