Debug Arp; Arp Troubleshooting - Digitalchina Networks DCS-3950 series Manual

Interface
Port
Flag

25.2.3.1.2 debug arp

Command: debug arp
no debug arp
Function: Enable the ARP debug function: the 'no debug arp' command disables this
debug function.
Default: ARP debug is disabled by default.
Command mode: Admin Mode
Usage Guide: Display contents for ARP packets received/sent, including type, source
and destination address, etc.
Example: Enable ARP debugging
Switch #debug arp
ARP：rcvd, type 1, src 1.1.1.1 1234.1234.1234, dst 1.1.1.2 5678.5678.5678

25.2.3.2 ARP Troubleshooting

If ping from the switch to directly connected network devices fails, the following can
be used to check the possible cause and solution.
Check whether the corresponding ARP has been learned by the switch.
If ARP is not learned, then enabled ARP debug information and view
sending/receiving condition of ARP packets.
DCS-3950 series Ethernet switch manual
00-10-00-00-00-C5
Layer3 interface corresponding to the ARP
entry.
Physical (Layer2) interface corresponding
to the ARP entry.
Describes whether ARP entry is dynamic or
static.
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