Black Box LGB1148A User Manual

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Page 175

Chapter 4: Security

• Relay Information Policy: Indicates the DHCP relay information option policy. When DHCP relay information mode operation

is enabled, if agent receives a DHCP message that already contains relay agent information, it will enforce the policy. And it only
works under DHCP if relay information operation mode is enabled. Possible policies are:

- Replace:Replace the original relay information when a DHCP message that already contains it is received.

- Keep: Keep the original relay information when a DHCP message that already contains it is received.

- Drop: Drop the package when a DHCP message that already contains relay information is received.

• Buttons:

- Save: Click to save changes.

- Reset: Click to undo any changes made locally and revert to previously saved values.

4.4.2 Statistics

This section describes how to show the DHCP Relay Statistics information of the switch. The statistics show both Server and Client
packet counters when DHCP Relay mode is enabled.

Web Interface

To configure a DHCP Snooping Statistics Configuration in the Web interface:

1. Check “Auto-refresh.”

Figure 4-10. The DHCP Relay Statistics screen.

Parameter Description

• Transmit to Server: The number of packets that are relayed from client to server.

• Transmit Error: The number of packets that resulted in errors while being sent to clients.

• Receive from Server: The number of packets received from server.

• Receive Missing Agent Option: The number of packets received without agent information options.

• Receive Missing Circuit ID: The number of packets received with the Circuit ID option missing.

• Receive Missing Remote ID: The number of packets received with the Remote ID option missing.

• Receive Bad Circuit ID: The number of packets whose Circuit ID option did not match known circuit ID.

• Receive Bad Remote ID: The number of packets whose Remote ID option did not match known remote ID.

LGB1108A