User manual

GS2210 Series User’s Guide
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The following table describes the labels in this screen.
Table 153 Advanced Application > Anti-Arpscan > Configure
LABEL DESCRIPTION
Active Select this to enable Anti-arpscan on the Switch.
Port Threshold A port threshold is determined by the number of packets received per second on the port. If
the received packet rate is over the threshold, then the port is put into an Err-Disable state.
Type the maximum number of packets per second allowed on the port before it is blocked.
Note: The allowed range is 2 to 255 packets received per second.
Host Threshold A host threshold is determined by the number of ARP-request packets received per second.
This is the global threshold rate for all hosts. If the rate of a host is over the threshold, then that
host is blocked by using a MAC address filter. A blocked host is released automatically after
the MAC aging time expires.
Type the maximum number of ARP-request packets allowed by a host before it is blocked.
Note: The allowed range is 2 to 100 ARP-request packets per second.
Note: The port-based threshold must be larger than the host-based threshold or the
host-based threshold will not be applied.
Port This is the port index number. Use port * to have all ports be Untrusted or Trusted.
* Settings in this row apply to all ports.
Use this row only if you want to make some settings the same for all ports. Use this row first to
set the common settings and then make adjustments on a port-by-port basis.
Note: Changes in this row are copied to all the ports as soon as you make them.
Trusted State Select Untrusted or Trusted for the associated port. Anti-arpscan is not performed on trusted
hosts.
Apply Click Apply to 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 memory when you are done configuring.
Cancel Click this to reset the values in this screen to their last-saved values.