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Chapter 27 IP Source Guard
OLT2406 User’s Guide
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The OLT discards ARP packets on untrusted ports in the following situations:
• The sender’s information in the ARP packet does not match any of the current bindings.
• The rate at which ARP packets arrive is too high.
27.10.2.3 Syslog
The OLT can send syslog messages to the specified syslog server (
) when it
forwards or discards ARP packets. The OLT can consolidate log messages and send log messages in
batches to make this mechanism more efficient.
27.10.2.4 Configuring ARP Inspection
Follow these steps to configure ARP inspection on the OLT.
1
Configure DHCP snooping. See
Note: It is recommended you enable DHCP snooping at least one day before you enable
ARP inspection so that the OLT has enough time to build the binding table.
2
Enable ARP inspection on each VLAN.
3
Configure trusted and untrusted ports, and specify the maximum number of ARP packets that each port
can receive per second.
Summary of Contents for OLT2406
Page 4: ...Document Conventions OLT2406 User s Guide 4 Desktop Laptop Switch IP Phone Smart T V...
Page 32: ...Table of Contents OLT2406 User s Guide 32 Index 758...
Page 33: ...33 PART I Introduction and Hardware Installation...
Page 63: ...63 PART II Web Configurator...
Page 179: ...Chapter 21 Classifier OLT2406 User s Guide 179 Figure 112 Classifier Example...
Page 182: ...Chapter 22 Policy Rule OLT2406 User s Guide 182 Figure 113 Advanced Application Policy Rule...
Page 186: ...Chapter 22 Policy Rule OLT2406 User s Guide 186 Figure 114 Policy Example...
Page 248: ...Chapter 28 Loop Guard OLT2406 User s Guide 248 Figure 151 Advanced Application Loop Guard...
Page 393: ...393 PART III CLI Commands...
Page 581: ...Chapter 78 VoIP OLT2406 User s Guide 581...
Page 725: ...725 PART IV Troubleshooting Specifications Appendices and Index...