21
2.
Verify that ARP entries are correct by using the
display arp
command:
{
If incorrect ARP entries exist, execute the
debugging arp packet
command to locate the
problem.
{
If the switch learns no ARP entries, you can execute the
arp static
command to configure static
ARP entries.
{
If ARP entries are correct, go to step 3.
3.
Verify that the route entries are correct by using the
display ip routing-table
command:
{
If incorrect route entries exist, troubleshoot the protocol that learns the route entries.
{
If route entries are correct but the problem persists, contact H3C Support.
Related commands
This section lists the commands that you might use for troubleshooting Layer 3 forwarding failure.
Command
Description
debugging arp packet
Enables ARP packet debugging.
display arp
Displays ARP entries.
display ip routing-table
Displays brief information about active routes in the routing
table.
SFP+ port not coming up
Symptom
An SFP+ port that has a 1000 Mbps SFP transceiver module installed fails to come up on an
S5800/S5820X switch.