Administrator Guide

Version Description
7.5.1.0 Introduced on the C-Series.
pre-6.2.1.0 Introduced on the E-Series.
Usage
Information
You cannot use Class D or Class E IP addresses or zero IP address (0.0.0.0) when creating a static ARP.
Zero MAC addresses (00:00:00:00:00:00) are also invalid.
Related
Commands
clear arp-cache — clears dynamic ARP entries from the ARP table.
show arp — displays the ARP table.
arp backoff-time
Set the exponential timer for resending unresolved ARPs.
Z9000
Syntax
arp backoff-time seconds
Parameters
seconds Enter the number of seconds an ARP entry is black-holed. The range is from 1 to
3600. The default is 30.
Defaults 30
Command Mode CONFIGURATION
Command
History
This guide is platform-specific. For command information about other platforms, refer to the relevant Dell
Networking OS Command Line Reference Guide.
The following is a list of the Dell Networking OS version history for this command.
Version Description
9.7(0.0) Introduced on the S6000-ON.
9.0.2.0 Introduced on the S6000.
8.3.19.0 Introduced on the S4820T.
8.3.11.1 Introduced on the Z9000.
8.3.8.0 Introduced on the S4810.
Usage
Information
This timer is an exponential backoff timer. Over the specified period, the time between ARP requests
increases. This behavior reduces the potential for the system to slow down while waiting for a multitude
of ARP responses.
Related
Commands
show arp retries — displays the configured number of ARP retries.
arp learn-enable
Enable ARP learning using gratuitous ARP.
Z9000
Syntax
arp learn-enable
Defaults Disabled
IPv4 Routing 577