Chapter 26 IP Source Guard
26.7.1 ARP Inspection Port Configure
Use this screen to specify whether ports are trusted or untrusted ports for ARP inspection. You can also specify the maximum rate at which the Switch receives ARP packets on each untrusted port. To open this screen, click Advanced Application > IP Source Guard > ARP Inspection > Configure > Port.
Figure 127 ARP Inspection Port Configure
The following table describes the labels in this screen.
Table 87 ARP Inspection Port Configure
LABEL | DESCRIPTION |
Port | This field displays the port number. If you configure the * port, the |
| settings are applied to all of the ports. |
|
|
Trusted State | Select whether this port is a trusted port (Trusted) or an untrusted |
| port (Untrusted). |
| The Switch does not discard ARP packets on trusted ports for any |
| reason. |
| The Switch 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. You can specify |
| the maximum rate at which ARP packets can arrive on untrusted |
| ports. |
|
|
Limit | Rate and Burst Interval settings have no effect on trusted ports. |
|
|
Rate (pps) | Specify the maximum rate |
| the Switch receives ARP packets from each port. The Switch |
| discards any additional ARP packets. Enter 0 to disable this limit. |
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| 279 |
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