SGS-6340 Series User Manual

After that, a
OSPF protocol feature should be checked---the OSPF backbone area should be
continuous and apply virtual link to ensure it is continuous. if not; all non 0 areas should only
be connected to other non 0 area through 0 area; a border Layer 3 switch means that one part
of the interfaces of this switch belongs to 0 area, the other part belongs to non 0 area; Layer 3
switch DR should be specified for multi-access network such as broadcast network.
26.6 ARP
26.6.1 Introduction to ARP
ARP (Address Resolution Protocol) is mainly used to resolve IP address to Ethernet MAC
address. Switch supports static ARP configuration.
26.6.2 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>
no arp <ip_address>
Configures a static ARP entry; the no
command deletes a static ARP entry.
26.6.3 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 sending/receiving condition of ARP packets.
 Defective cable is a common cause of ARP problems and may disable ARP
learning.
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