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 (1-2048 packets per second) at which

 

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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XGS-4526/4528F/4728F User’s Guide