
IP Interface Commands
4-241
4
Address Resolution Protocol (ARP)
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.
•
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 128.
• 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.
Example
Related Commands
clear arp-cache
show arp
Table 4-77 Address Resolution Protocol Commands
Command
Function
Mode
Page
arp
Adds a static entry in the ARP cache
GC
4-241
arp-timeout
Sets the time a dynamic entry remains in the ARP cache
GC
4-242
clear arp-cache
Deletes all dynamic entries from the ARP cache
PE
4-242
show arp
Displays entries in the ARP cache
NE, PE 4-242
ip proxy-arp
Enables proxy ARP service
VC
4-243
Console(config)#arp 10.1.0.19 01-02-03-04-05-06
Console(config)#
Summary of Contents for ES4612
Page 2: ......
Page 4: ...ES4612 F1 0 2 5 E092004 R01 150000046400A ...
Page 38: ...Introduction 1 10 1 ...
Page 48: ...Initial Configuration 2 10 2 ...
Page 269: ...IP Routing 3 221 3 Web Click Routing Protocol RIP Statistics Figure 3 130 RIP Statistics ...
Page 314: ...Configuring the Switch 3 266 3 ...
Page 644: ...Command Line Interface 4 330 4 ...
Page 658: ...Glossary Glossary 8 ...
Page 664: ...Index 6 Index ...
Page 665: ......
Page 666: ...ES4612 E092004 R01 150000046400A ...