Concept Guide
Figure 54. ARP Learning via ARP Request
When you enable ARP learning via gratuitous ARP, the system installs a new ARP entry, or updates an existing entry for all received ARP
requests.
Figure 55. ARP Learning via ARP Request with ARP Learning via Gratuitous ARP Enabled
Whether you enable or disable ARP learning via gratuitous ARP, the system does not look up the target IP. It only updates the ARP entry
for the Layer 3 interface with the source IP of the request.
Conguring ARP Retries
The number of ARP retries is user-congurable.
The default backo interval remains at 20 seconds.
To set and display ARP retries, use the following commands.
• Set the number of ARP retries.
CONFIGURATION mode
arp retries number
The default is 5.
The range is from 1 to 20.
• Set the exponential timer for resending unresolved ARPs.
CONFIGURATION mode
IPv4 Routing
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