Saving A Binding Database - Alaxala AX2200S Series Configuration Manual

Fields of an ARP packet
Ethernet
header
ARP header
Legend:
Y: Subject to inspection
--: Not subject to inspection
(4) Limiting the rate of ARP packet reception
If the dynamic ARP inspection is enabled, ARP packets that are received on ports
belonging to VLANs subject to dynamic ARP inspections and that exceed the configured
reception rate are discarded.
To set the reception rate, use the
If this reception rate has not been set, it has no limit.
The ARP packets exceeding the rate are dropped, and the incident is logged in the
operation log. However, traps are not issued. Use the
check the operation log information, and use the
operation command to check the number of discarded packets.
The events logged in the operation log when the ARP packet reception rate exceeds the
limit are the same as those logged when a limit is applied to the DHCP packet reception
rate. For details, see Figure 23-7 Events logged in the operation log related to the rate of
DHCP packet reception in 23.1.3 Forwarding DHCP packets with Option 82.

23.1.6 Saving a binding database

The binding database can be configured so that it is saved and restored when the Switch
restarts.
(1) Operating conditions for saving a binding database
You can set the operating conditions for saving the binding database by setting the
following configuration commands:

ip dhcp snooping

ip dhcp snooping vlan

ip dhcp snooping database url
to.
The Switch saves the binding database by specific operations or when the wait-to-write
time expires.
Destinatio MAC
n
Source MAC
Sender MAC
IP
Target MAC
IP
: Sets DHCP snooping enabled.
: Sets the VLANs for which DHCP snooping is performed.
src-mac check dst-mac check
Reque Reply Reque
st st
-- -- --
Y Y --
Y Y --
-- -- --
-- -- --
-- -- --
ip arp inspection limit rate
show logging
show ip arp inspection statistics
: Sets the location the binding database is saved
23 DHCP Snooping
ip check
Reply Reque Reply
st
Y -- --
-- -- --
-- -- --
-- -- --
Y -- --
-- -- Y
configuration command.
operation command to
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