ZyXEL Communications XGS4600 Series, Руководство пользователя

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Chapter 28 DHCP Snooping
XGS4600 Series User’s Guide
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Agent running This field displays the status of the current update or access of the DHCP snooping
database.
none : The Switch is not accessing the DHCP snooping database.
read : The Switch is loading dynamic bindings from the DHCP snooping database.
write : The Switch is updating the DHCP snooping database.
Delay timer expiry This field displays how much longer (in seconds) the Switch tries to complete the current
update before it gives up. It displays
Not Running if the Switch is not updating the DHCP
snooping database right now.
Abort timer expiry This field displays when (in seconds) the Switch is going to update the DHCP snooping
database again. It displays
Not Running if the current bindings have not changed since the
last update.
This section displays information about the last time the Switch updated the DHCP snooping
database.
Last succeeded
time This field displays the last time the Switch updated the DHCP snooping database
successfully.
Last failed time This field displays the last time the Switch updated the DHCP snooping database
unsuccessfully.
Last failed reason This field displays the reason the Switch updated the DHCP snooping database
unsuccessfully.
This section displays historical information about the number of times the Switch successfully
or unsuccessfully read or updated the DHCP snooping database.
Total attempts This field displays the number of times the Switch has tried to access the DHCP snooping
database for any reason.
Startup failures This field displays the number of times the Switch could not create or read the DHCP
snooping database when the Switch started up or a new URL is configured for the DHCP
snooping database.
Successful transfers This field displays the number of times the Switch read bindings from or updated the bindings
in the DHCP snooping database successfully.
Failed transfers This field displays the number of times the Switch was unable to read bindings from or
update the bindings in the DHCP snooping database.
Successful reads This field displays the number of times the Switch read bindings from the DHCP snooping
database successfully.
Failed reads This field displays the number of times the Switch was unable to read bindings from the
DHCP snooping database.
Successful writes This field displays the number of times the Switch updated the bindings in the DHCP
snooping database successfully.
Failed writes This field displays the number of times the Switch was unable to update the bindings in the
DHCP snooping database.
Database detail
First successful
access This field displays the first time the Switch accessed the DHCP snooping database for any
reason.
Last ignored
bindings counters This section displays the number of times and the reasons the Switch ignored bindings the
last time it read bindings from the DHCP binding database. You can clear these counters by
restarting the Switch or using CLI commands. See the Ethernet Switch CLI Reference Guide.
Binding collisions This field displays the number of bindings the Switch ignored because the Switch already
had a binding with the same MAC address and VLAN ID.
Invalid interfaces This field displays the number of bindings the Switch ignored because the port number was
a trusted interface or does not exist anymore.
Table 125 Advanced Application > IP Source Guard > IPv4 Source Guard Setup > DHCP Snooping
LABEL DESCRIPTION