ZyXEL Communications XS3800-28 Cli Reference Manual page 36

7.2 Command Examples
This example looks at the current list of MAC address filters that were created because the Switch
identified an unauthorized ARP packet. When the Switch identifies an unauthorized ARP packet, it
automatically creates a MAC address filter to block traffic from the source MAC address and source
VLAN ID of the unauthorized ARP packet.
sysname# show arp inspection filter
Filtering aging timeout : 300
-----------------
Total number of bindings: 0
The following table describes the labels in this screen.
Table 20 show arp inspection filter
LABEL
Filtering aging timeout
MacAddress
VLAN
Port
Expiry (sec)
Reason
This example looks at log messages that were generated by ARP packets and that have not been sent
to the syslog server yet.
sysname# show arp inspection log
Total Log Buffer Size : 32
Syslog rate : 5 entries per 1 seconds
Port Vlan
---- ----
---------------------
Total number of logs: 0
Chapter 7 ARP Inspection Commands
MacAddress VLAN Port
---- -----
DESCRIPTION
This field displays how long the MAC address filters remain in the Switch after the Switch
identifies an unauthorized ARP packet. The Switch automatically deletes the MAC
address filter afterwards.
This field displays the source MAC address in the MAC address filter.
This field displays the source VLAN ID in the MAC address filter.
This field displays the source port of the discarded ARP packet.
This field displays how long (in seconds) the MAC address filter remains in the Switch.
You can also delete the record manually (Delete).
This field displays the reason the ARP packet was discarded.
MAC+VLAN: The MAC address and VLAN ID were not in the binding table.
IP: The MAC address and VLAN ID were in the binding table, but the IP address was not
valid.
Port: The MAC address, VLAN ID, and IP address were in the binding table, but the port
number was not valid.
Sender MAC
Time
-----------------
Ethernet Switch CLI Reference Guide
Expiry (sec)
------------ --------------
Sender IP Pkts
--------------- ----
36
Reason
Reason
---------- ----