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Cisco Catalyst Blade Switch 3130 and 3032 for Dell Software Configuration Guide
OL-12247-04
Chapter 38 Configuring IP Unicast Routing
Configuring IP Addressing
To remove an entry from the ARP cache, use the
no arp
ip-address hardware-address type
global
configuration command. To remove all nonstatic entries from the ARP cache, use the
clear arp-cache
privileged EXEC command
.
Set ARP Encapsulation
By default, Ethernet ARP encapsulation (represented by the
arpa
keyword) is enabled on an IP interface.
You can change the encapsulation method to SNAP if required by your network.
Beginning in privileged EXEC mode, follow these steps to specify the ARP encapsulation type:
To disable an encapsulation type, use the
no arp arpa
or
no arp snap
interface configuration command.
Step 3
arp
ip-address hardware-address type
[
alias
]
(Optional) Specify that the switch respond to ARP requests as if
it were the owner of the specified IP address.
Step 4
interface
interface-id
Enter interface configuration mode, and specify the interface to
configure.
Step 5
arp timeout
seconds
(Optional) Set the length of time that an ARP cache entry stays
in the cache. The range is 0 to 2147483 seconds. The default is
14400 seconds (4 hours).
Step 6
end
Return to privileged EXEC mode.
Step 7
show interfaces
[
interface-id
]
Verify the type of ARP and the timeout value used on all
interfaces or on a specific interface.
Step 8
show arp
or
show ip arp
View the contents of the ARP cache.
Step 9
copy running-config startup-config
(Optional) Save your entries in the configuration file.
Command
Purpose
Command
Purpose
Step 1
configure terminal
Enter global configuration mode.
Step 2
interface
interface-id
Enter interface configuration mode, and specify the Layer 3
interface to configure.
Step 3
arp
{
arpa
|
snap
}
Specify the ARP encapsulation method:
•
arpa
—Address Resolution Protocol
•
snap
—Subnetwork Address Protocol
Step 4
end
Return to privileged EXEC mode.
Step 5
show interfaces
[
interface-id
]
Verify ARP encapsulation configuration on all interfaces or
the specified interface.
Step 6
copy running-config startup-config
(Optional) Save your entries in the configuration file.
