ZyXEL Communications ES3500 Series 26.5 DHCP Snooping Configure, counters, counters, Parse failures, Expired leases, Parse failures, Expired leases, Unsupported vlans, Last ignored time

	Chapter 26 IP Source Guard
Table 83 DHCP Snooping (continued)
LABEL	DESCRIPTION
Last ignored bindings	This section displays the number of times and the reasons the Switch ignored
counters	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.
Parse failures	This field displays the number of bindings the Switch ignored because the Switch was
	unable to understand the binding in the DHCP binding database.
Expired leases	This field displays the number of bindings the Switch ignored because the lease time
	had already expired.
Unsupported vlans	This field displays the number of bindings the Switch ignored because the VLAN ID
	does not exist anymore.
Last ignored time	This field displays the last time the Switch ignored any bindings for any reason from
	the DHCP binding database.
Total ignored bindings	This section displays the reasons the Switch has ignored bindings any time it read
counters	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 has 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 has ignored because the port
	number was a trusted interface or does not exist anymore.
Parse failures	This field displays the number of bindings the Switch has ignored because the Switch
	was unable to understand the binding in the DHCP binding database.
Expired leases	This field displays the number of bindings the Switch has ignored because the lease
	time had already expired.
Unsupported vlans	This field displays the number of bindings the Switch has ignored because the VLAN
	ID does not exist anymore.

26.5 DHCP Snooping Configure

Use this screen to enable DHCP snooping on the Switch (not on specific VLAN), specify the VLAN where the default DHCP server is located, and configure the DHCP snooping database. The DHCP snooping database stores the current bindings on a secure, external TFTP server so that they are

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ES3500 Series User’s Guide