Arp - Alcatel-Lucent OmniSwitch 6250 Cli Reference Manual

arp

Adds a permanent entry to the ARP table. To forward packets, the switch dynamically builds an ARP
Table to match the IP address of a device with its physical (MAC) address. These entries age out of the
table when the timeout value is exceeded. This command is used to add a permanent entry to the table.
Permanent entries do not age out of the table.
arp ip_address hardware_address [alias]
no arp ip_address [alias]
Syntax Definitions
ip_address
hardware_address
alias
Defaults
N/A
Platforms Supported
OmniSwitch 6250
Usage Guidelines
•
Use the no form of this command to delete a permanent ARP entry.
•
Note that using the arp alias command is not related to proxy ARP as defined in RFC 925. Instead,
arp alias is similar to the Local Proxy ARP feature, except that it is used to configure the switch as a
proxy for only one IP address.
•
Because most hosts support the use of address resolution protocols to determine cache address informa-
tion (called dynamic address resolution), you generally do not need to specify permanent ARP cache
entries.
•
Only the IP address is required when deleting an ARP entry from the table.
Examples
-> arp 171.11.1.1 00:05:02:c0:7f:11
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IP address of the device you are adding to the ARP table.
MAC address of the device in hexadecimal format (e.g.,
00.00.39.59.f1.0c).
Specifies that the switch will act as an alias (or proxy) for this IP
address. When the alias option is used, the switch responds to all ARP
requests for the specified IP address with its own MAC address.
You can also enable the proxy feature for an IP interface using the
interface command. When enabled, ARP requests return the MAC
address of the IP router interface and all traffic within the VLAN is
routed.
OmniSwitch 6250 CLI Reference Guide
IP Commands
ip
November 2009