Alcatel-Lucent 6850-48 参考指南

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页码 3444
IP Commands
page 32-66
OmniSwitch CLI Reference Guide
September 2009
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]  [arp-name name]
no arp ip_address [alias]
Syntax Definitions
ip_address
IP address of the device you are adding to the ARP table. 
hardware_address
MAC address of the device in hexadecimal format (e.g., 
00.00.39.59.f1.0c).
alias
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 
 command. When enabled, ARP requests return the MAC 
address of the IP router interface and all traffic within the VLAN is 
routed.
name
The name to assign to this ARP entry. 
Defaults
N/A
Platforms Supported
OmniSwitch 6400, 6850, 6855, 9000, 9000E
Usage Guidelines
• Use the no form of this command to delete a permanent ARP entry.
• Configuring a permanent ARP entry with a multicast address is also supported. This is done by specify-
ing a multicast address for the ip_address parameter instead of a unicast address. (OS9000 and OS6850 
24-port models only)
• 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.