ZyXEL Communications OLT2406, User Manual

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Chapter 77 IP Source Guard
OLT2406 User’s Guide
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The following table describes the labels in this display.
This example displays whether ports are trusted or untrusted ports for ARP inspection.
Table 292 show arp inspection log
LABEL DESCRIPTION
Total Log Buffer Size This field displays the maximum number (1-1024) of log messages that were generated
by ARP packets and have not been sent to the syslog server yet.
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.
Syslog rate This field displays the maximum number of syslog messages the OLT can send to the
syslog server in one batch. This number is expressed as a rate because the batch
frequency is determined by the
Log Interval .
Port This field displays the source port of the ARP packet.
Vlan 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.
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.
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.
static permit : An ARP packet was forwarded because it matched a static binding.
dhcp permit : An ARP packet was forwarded because it matched a dynamic binding.
Time This field displays when the log message was generated.
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.
OLT2406# show arp inspection interface port-channel ge-5-1
Interface Trusted State Rate (pps) Burst Interval
--------- ------------- ---------- --------------
ge-5-1 Untrusted 15 1