ZyXEL Communications XGS-4526 User Manual

Page 249

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Chapter 26 IP Source Guard

XGS-4526 User’s Guide

249

The following table describes the labels in this screen.

Table 78 DHCP Snooping

LABEL

DESCRIPTION

Database Status

This section displays the current settings for the DHCP snooping
database. You can configure them in the DHCP Snooping
Configure
screen. See

Section 26.5 on page 251

.

Agent URL

This field displays the location of the DHCP snooping database.

Write delay timer

This field displays how long (in seconds) the Switch tries to
complete a specific update in the DHCP snooping database before
it gives up.

Abort timer

This field displays how long (in seconds) the Switch waits to
update the DHCP snooping database after the current bindings
change.
This section displays information about the current update and
the next update of the DHCP snooping database.

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.

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