SNR S2940-8G-v2 Switch Configuration Guide
Layer 3 Management Configuration
29.4 ARP
29.4.1 Introduction to ARP
ARP (Address Resolution Protocol) is mainly used to resolve IP address to Ethernet MAC address.
Switch supports both dynamic ARP and static ARP configuration.
29.4.2 ARP Configuration Task List
ARP Configuration Task List:
1. Configure static ARP
1. Configure static ARP
Command Explanation
VLAN Interface Mode
arp <ip_address> <mac_address> { interface
no arp <ip_address>
Configures a static ARP entry; the no com-
mand deletes a ARP entry of the specified
IP address.
29.4.3 ARP Troubleshooting
If ping from the switch to directly connected network devices fails, the following can be used to
check the possible cause and create a solution.
• Check whether the corresponding ARP has been learned by the switch.
• If ARP has not been learned, then enabled ARP debugging information and view the send-
ing/receiving condition of ARP packets.
• Defective cable is a common cause of ARP problems and may disable ARP learning.
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