balancing and redundancy devices, which make use of hardware layer multicast addresses.
Default: DropLog
ARP Broadcast
Determines how NetDefendOS deals with ARP requests and ARP replies that state that they are
broadcast addresses. Such claims are usually never correct.
Default: DropLog
ARP cache size
How many ARP entries there can be in the cache in total.
Default: 4096
ARP Hash Size
Hashing is used to rapidly look up entries in a table. For maximum efficiency, the hash size should
be twice as large as the table it is indexing. If the largest directly-connected LAN contains 500 IP
addresses then the size of the ARP entry hash should be at least 1000 entries.
Default: 512
ARP Hash Size VLAN
Hashing is used to rapidly look up entries in a table. For maximum efficiency, the hash size should
be twice as large as the table it is indexing, so if the largest directly-connected VLAN contains 500
IP addresses, the size of the ARP entry hash should be at least 1000 entries.
Default: 64
ARP IP Collision
Determines the behavior when receiving an ARP request with a sender IP address that collides with
one already used on the receive interface. Possible actions: Drop or Notify.
Default: Drop
3.5.5. ARP Advanced Settings
Summary
Chapter 3. Fundamentals
136
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