Chapter 25 IP Source Guard
GS3700/XGS3700 Series User’s Guide
285
Figure 197 IP Source Guard > IPv4 Source Guard Setup > ARP Inspection > Configure > Port
(Stacking mode)
The following table describes the labels in this screen.
Table 133 IP Source Guard > IPv4 Source Guard Setup > ARP Inspection > Configure > Port
LABEL DESCRIPTION
Slot (Stacking mode) This field appears only in stacking mode. Click the drop-down list to choose the slot
number of the Switch in a stack.
Port (Standalone or
stacking mode)
This field displays the port number. In stacking mode, the first field is the slot ID and
the second field is the port number. * means all ports (on the same Switch).
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.
Burst interval
(seconds)
The burst interval is the length of time over which the rate of ARP packets is
monitored for each port. For example, if the Rate is 15 pps and the burst interval is 1
second, then the Switch accepts a maximum of 15 ARP packets in every one-second
interval. If the burst interval is 5 seconds, then the Switch accepts a m aximum of 75
ARP packets in every five-second interval.
Enter the length (1-15 seconds) of the burst interval.
Apply Click Apply t o save your changes to the Switch’s run-time memory. The Switch loses
these changes if it is turned off or loses power, so use the Save link on the top
navigation panel to save your changes to the non-volatile m emory when you are
done configuring.
Cancel Click this to reset the values in this screen to their last-saved values.
To Next Page
Loading...
