Command Reference Guide

650 | IPv4 Routing
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c e s
Enable ARP learning via Gratuitous ARP.
Syntax
arp learn-enable
Defaults
Disabled
Command Modes
CONFIGURATION
Command
History
Usage
Information
In FTOS versions prior to 8.3.1.0, if a gratuitous ARP is received some time after an ARP
request is sent, only RP2 installs the ARP information. For example:
1. At time t=0 FTOS sends an ARP request for IP A.B.C.D
2. At time t=1 FTOS receives an ARP request for IP A.B.C.D
3. At time t=2 FTOS installs an ARP entry for A.B.C.D only on RP2.
Beginning with version 8.3.1.0, when a Gratuitous ARP is received, FTOS installs an ARP
entry on all 3 CPUs.
arp retries
c e s
Set the number of ARP retries in case the system does not receive an ARP reply in response
to an ARP request.
Syntax
arp retries number
Parameters
Defaults
5
Command Modes
CONFIGURATION
Command
History
Usage
Information
Retries are 20 seconds apart.
Related
Commands
Version 8.3.7.0 Introduced on S4810
Version 8.3.1.0 Introduced
number
Enter the number of retries.
Range: 5 to 20.
Default: 5
Version 8.3.7.0 Introduced on S4810
Version 8.3.1.0 Introduced
show arp retries Display the configured number of ARP retries.