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ARP (Address Resolution Protocol) is mainly used to resolve IP address to Ethernet
MAC address. ES4700 series supports both dynamic ARP and static ARP configuration.
Furthermore, ES4700 series supports the configuration of proxy ARP for some
applications. For instance, when an ARP request is received on the port, requesting an IP
address in the same IP segment of the port but not the same physical network, if the port
has enabled proxy ARP, the port would reply to the ARP with its own MAC address and
forward the actual packets received. Enabling proxy ARP allows machines physically
separated but of the same IP segment ignores the physical separation and communicate
via proxy ARP interface as if in the same physical network.
10.5.2 ARP Configuration Task List
1. Configure static ARP
2. Configure proxy ARP
1. Configure static ARP
Command Explanation
arp
<ip_address> <mac_address>
{[ethernet] <portName>}
no arp <ip_address>
Configures a static ARP entry; the “
no arp
<ip_address>”
command deletes a static
ARP entry.
2. Configure proxy ARP
Command Explanation
ip proxy-arp
no ip proxy-arp
Enables the proxy ARP function for
Ethernet ports: the “
no ip proxy-arp”
command disables the proxy ARP.
3. Clear dynamic ARP
Command Explanation
clear arp-cache
The command “
clear arp-cache”
clears
the content of current ARP table, but it
does not clear the current static ARP table
10.5.3 Command for ARP Configuration
10.5.3.1 Arp
