Ip dhcp snooping max-bindings – Allied Telesis AT-8100 Series User Manual
Page 655
AT-8100 Switch Command Line User’s Guide
655
IP DHCP SNOOPING MAX-BINDINGS
Syntax
ip dhcp snooping
max-bindings
<
0 - 520
>
Parameters
max-bindings
Specifies the maximum number of bindings that are stored in the
DHCP snooping binding database for the port specified. If 0 is
specified, no entries are stored in the database.
Mode
Port Interface mode
Description
Use this command to set the maximum number of DHCP lease entries that
can be stored in the DHCP snooping database for a port or a range of
ports. After this value is reached, no additional DHCP lease allocations
made to the devices on the port are stored in the database. The default
value for the maximum number of DHCP lease entries is 1.
The maximum number of leases cannot be changed for a port while there
are DHCP snooping Access Control Lists (ACL) associated with the port.
Before using this command, remove any DHCP snooping ACLs
associated with the ports.
In general, the default value of 1 works well on an edge port with a single-
directly-connected-DHCP client. If the port is on an aggregated switch with
multiple DHCP clients connected through it, then use this command to
increase the number of lease entries for the port.
If there are multiple VLANs configured on the port, the limit of DHCP lease
entries is shared between all of the VLANs on the specified port. For
example, the default value only allows one lease to be stored for one
VLAN. To allow connectivity for the other VLANs, use this command to
increase the number of lease entries for the port.
Use the no version of the command, the NO IP DHCP MAX-BINDINGS
command, to reset the maximum number of DHCP lease entries to the
default of 1.
Confirmation Command