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27.9 ARP Inspection Configure
Use this screen to enable ARP inspection on the OLT. You can also configure the length of time the OLT
stores records of discarded ARP packets and global settings for the ARP inspection log. To open this
screen, click Advanced Application > IP Source Guard > ARP Inspection > Configure.
Figure 142 Advanced Application > IP Source Guard > ARP Inspection > Configure
The following table describes the labels in this screen.
Table 90 Advanced Application > IP Source Guard > ARP Inspection > Configure
LABEL
Active
Filter Aging Time
Filter aging time
Log Profile
Log buffer size
Chapter 27 IP Source Guard
DESCRIPTION
Select this to enable ARP inspection on the OLT. You still have to enable ARP inspection on
specific VLAN and specify trusted ports.
This setting has no effect on existing MAC address filters.
Enter how long (1~2147483647 seconds) the MAC address filter remains in the OLT after the
OLT identifies an unauthorized ARP packet. The OLT automatically deletes the MAC
address filter afterwards. Enter 0 if you want the MAC address filter to be permanent.
Enter the maximum number (1~1024) of log messages that were generated by ARP
packets and have not been sent to the syslog server yet. Make sure this number is
appropriate for the specified Syslog rate and Log interval.
If the number of log messages in the OLT exceeds this number, the OLT stops recording log
messages and simply starts counting the number of entries that were dropped due to
unavailable buffer. Click Clearing log status table in the ARP Inspection Log Status screen
to clear the log and reset this counter. See
OLT2406 User's Guide
238
Section 27.8 on page
236.
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Troubleshooting
