User guide

596 Brocade 6910 Ethernet Access Switch Configuration Guide
53-1002581-01
IPv4 Interface
29
Related Commands
interface (262)
ARP Configuration
This section describes commands used to configure the Address Resolution Protocol (ARP) on the
switch.
arp
This command adds a static entry in the Address Resolution Protocol (ARP) cache. Use the no form
to remove an entry from the cache.
Syntax
arp ip-address hardware-address
no arp ip-address
ip-address - IP address to map to a specified hardware address. (Valid IP addresses
consist of four numbers, 0 to 255, separated by periods, and must match a known
network interface)
hardware-address - Hardware address to map to a specified IP address. (The format for
this address is xx-xx-xx-xx-xx-xx.)
Default Setting
No default entries
Command Mode
Global Configuration
Command Usage
• The ARP cache is used to map 32-bit IP addresses into 48-bit hardware (i.e., Media Access
Control) addresses. This cache includes entries for hosts and other routers on local network
interfaces defined on this router.
• The maximum number of static entries allowed in the ARP cache is 32.
• You may need to enter a static entry in the cache if there is no response to an ARP broadcast
message. For example, some applications may not respond to ARP requests or the response
arrives too late, causing network operations to time out.
TABLE 143 Address Resolution Protocol Commands
Command Function Mode
arp Adds a static entry in the ARP cache GC
arp timeout Sets the time a dynamic entry remains in the ARP cache GC
ip proxy-arp Enables proxy ARP service IC
clear arp-cache Deletes all dynamic entries from the ARP cache PE
show arp Displays entries in the ARP cache NE, PE