Avaya C360 Layer 3 Features
182 Installation and Configuration Guide Avaya C360 Multilayer Stackable Switches, version 4.5
The ARP Table
The ARP table is used to store recently used pairs of IP/MAC addresses. This saves time and
communication costs, since the host looks in the ARP cache first when transmitting a packet. If
the information is not there, then the host sends an ARP Request (see Figure 27
).
ARP CLI Commands
In order to... Use the following command...
Add a permanent entry to the
Address Resolution Protocol
(ARP) cache
arp
Configure the amount of time
that an entry remains in the ARP
cache
arp timeout
Set the amount of time that an
entry remains in the ARP cache
back to default
no arp timeout
Set the maximum number of
ARP cache entries allowed in
the ARP cache
ip max-arp-entries
Set the maximum number of
ARP cache back to default
no ip max-arp-entries
Enable proxy ARP on an
interface
ip proxy-arp
Disable proxy ARP on an
interface
no ip proxy-arp
Delete all dynamic entries from
the ARP cache and the IP route
cache
clear arp-cache
Display the Address Resolution
Protocol (ARP) cache
show ip arp
Display the IP address of a host,
based on a known MAC address
show ip reverse-arp