ZyXEL Communications OLT2406, User Manual

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Chapter 27 IP Source Guard
OLT2406 User’s Guide
237
Figure 141 Advanced Application > IP Source Guard > ARP Inspection > Log Status
The following table describes the labels in this screen.
Table 89 Advanced Application > IP Source Guard > ARP Inspection > Log Status
LABEL DESCRIPTION
Clearing log status
table Click Apply to remove all the log messages that were generated by ARP packets and
that have not been sent to the syslog server yet.
Total number of logs This field displays the number of log messages that were generated by ARP packets and
that have not been sent to the syslog server yet. If one or more log messages are
dropped due to unavailable buffer, there is an entry called
overflow with the current
number of dropped log messages.
Index This field displays a sequential number for each log message.
Port This field displays the source port of the ARP packet.
VID This field displays the source VLAN ID of the ARP packet.
Sender MAC This field displays the source MAC address of the ARP packet.
Sender IP This field displays the source IP address of the ARP packet.
Num Pkts This field displays the number of ARP packets that were consolidated into this log
message. The OLT consolidates identical log messages generated by ARP packets in the
log consolidation interval into one log message. You can configure this interval in the
ARP
Inspection Configure screen. See Section 27.9 on page 238 .
Reason This field displays the reason the log message was generated.
dhcp deny : An ARP packet was discarded because it violated a dynamic binding with
the same MAC address and VLAN ID.
static deny : An ARP packet was discarded because it violated a static binding with the
same MAC address and VLAN ID.
deny : An ARP packet was discarded because there were no bindings with the same
MAC address and VLAN ID.
dhcp permit : An ARP packet was forwarded because it matched a dynamic binding.
static permit : An ARP packet was forwarded because it matched a static binding.
In the ARP Inspection VLAN Configure screen, you can configure the OLT to generate log
messages when ARP packets are discarded or forwarded based on the VLAN ID of the
ARP packet. See
Section 27.9.2 on page 240 .
Time This field displays when the log message was generated.