Administrator Guide

Version Description
8.3.7.0 Introduced on the S4810.
8.1.1.0 Introduced on the E-Series ExaScale.
7.6.1.0 Introduced on the S-Series.
7.5.1.0 Introduced on the C-Series.
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.
Use this command in Configuration Terminal Batch mode to associate an IP address with a MAC address
in a dual-homing setup.
NOTE: The parameters vrf, mac-address, and interface are not supported in the batch mode.
Although static ARP entries take precedence over dynamically-learnt ARP entries, a static ARP entry that
points to a wrong port is not included in the FIB or ARP entries.
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.
C9000 Series
Syntax
arp backoff-time seconds / minutes
Parameters
seconds Enter the number of seconds an ARP entry is black-holed. The range is from 1 to
3600. The default is 30 minutes.
minutes Enter the number of minutes an ARP entry is balck-holed. The range is from 0 to
35790. The default is 4 hours.
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
9.9(0.0) Introduced on the C9010.
9.2(1.0) Introduced on the Z9500.
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
The arp backoff 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.
902 IPv4 Routing