Chapter 77 IP Source Guard
OLT2406 User’s Guide
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creates a MAC address filter to block traffic from the source MAC address and source VLAN ID of the
unauthorized ARP packet.
The following table describes the labels in this display.
This example looks at log messages that were generated by ARP packets and that have not been sent
to the syslog server yet.
OLT2406# show arp inspection filter
Filtering aging timeout : 300
MacAddress VLAN Port Expiry (sec) Reason
----------------- ---- ----- ------------ --------------
Total number of bindings: 0
Table 291 show arp inspection filter
LABEL DESCRIPTION
Filtering aging timeout This field displays how long the MAC address filters remain in the OLT after the OLT
identifies an unauthorized ARP packet. The OLT automatically deletes the MAC
address filter afterwards.
MacAddress This field displays the source MAC address in the MAC address filter.
VLAN This field displays the source VLAN ID in the MAC address filter.
Port This field displays the source port of the discarded ARP packet.
Expiry (sec) This field displays how long (in seconds) the MAC address filter remains in the OLT. You
can also delete the record manually (Delete).
Reason 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.
OLT2406# show arp inspection log
Total Log Buffer Size : 32
Syslog rate : 5 entries per 1 seconds
Port Vlan Sender MAC Sender IP Pkts Reason
Time
---- ---- ----------------- --------------- ---- ---------- ----
---------------------
Total number of logs: 0
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