ZyXEL Communications GS1920-48HPv2, Руководство пользователя

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Chapter 26 IP Source Guard
GS1920v2 Series User’s Guide
251
26.10 ARP Inspe c tio n C o nfig ure
Use this screen to enable ARP inspection on the Switch. You can also configure the length of time the
Switch stores records of discarded ARP packets and global settings for the ARP inspection log. To open
this screen, click
Adva nc e d Applic a tio n > IP So urc e G ua rd > IPv4 So urc e G ua rd Se tup > ARP Inspe c tio n >
C o nfig ure
.
Fig ure 179
Advanced Application > IP Source Guard > IPv4 Source Guard Setup > ARP Inspection >
Configure
The following table describes the labels in this screen.
Table 110 Advanced Application > IP Source Guard > IPv4 Source Guard Setup > ARP Inspection >
Configure
LABEL DESC RIPTIO N
Active Select this to enable ARP inspection on the Switch. You still have to enable ARP inspection
on specific VLAN and specify trusted ports.
Filter Aging Time
Filter aging time This setting has no effect on existing MAC address filters.
Enter how long (1~2147483647 seconds) the MAC address filter remains in the Switch after
the Switch identifies an unauthorized ARP packet. The Switch automatically deletes the
MAC address filter afterwards. Enter 0 if you want the MAC address filter to be permanent.
Log Profile
Log buffer size 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
Syslo g ra te
and
Lo g inte rva l
.
If the number of log messages in the Switch exceeds this number, the Switch stops
recording log messages and simply starts counting the number of entries that were
dropped due to unavailable buffer. Click
C le a ring lo g sta tus ta b le
in the
ARP Inspe c tio n
Lo g Sta tus
screen to clear the log and reset this counter. See Section 26.9 on page 249 .