IP Commands
page 29-56 OmniSwitch 6250 CLI Reference Guide November 2009
arp filter
Configures an ARP filter that will determine if ARP Request packets containing a specific IP address are
processed by the switch or discarded.
arp filter ip_address [mask ip_mask] [vid] [sender | target] [allow | block]
no arp filter ip_address
Syntax Definitions
ip_address The IP address to use for filtering ARP packet IP addresses.
ip_mask An IP mask that identifies which part of the ARP packet IP address is
examined for filtering (e.g. mask 255.0.0.0 filters on the first octet of the
ARP packet IP address).
vid A VLAN ID that specifies that only ARP packets for a specific VLAN
are filtered.
sender The sender IP address in the ARP packet is used for ARP filtering.
target The target IP address in the ARP packet is used for ARP filtering.
allow ARP packets that meet filter criteria are processed.
block ARP packets that meet filter criteria are discarded.
Defaults
Platforms Supported
OmniSwitch 6250
Usage Guidelines
• Use the no form of this command to delete an ARP filter.
• If there are no filters configured for the switch, all ARP Request packets received are processed.
• Up to 200 filters are allowed on each switch.
• If sender or target IP address in an ARP Request packet does not match any filter criteria, the packet is
processed by the switch.
• ARP filtering is generally used in conjunction with the Local Proxy ARP application; however, ARP
filtering is available for use on its own and/or with other applications.
parameter default
vid 0 (no VLAN)
ip_mask 255.255.255.255
sender | target target
allow | block block
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