HPE FlexNetwork 5130 Series User Manual

27
Layer 3 forwarding failure
Symptom
Packet loss occurs when the switch forwards packets to a different network.
Troubleshooting flowchart
Figure 8 Troubleshooting a Layer 3 forwarding failure
Solution
To resolve the problem:
1. Verify that the port is not faulty (due to hardware or configuration problems).
If the port is faulty, follow the solution in "Layer 2 forwarding failure" to troubl
eshoot the problem.
2. Verify that ARP entries are correct:
a. Execute the display arp command to verify that ARP entries are correct.
− 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.
b. Execute the display mac-address command to verify that the output interfaces in the MAC
address entries and ARP entries are the same by using the display mac-address
command.
If the output interfaces are not the same, execute the reset command to clear the ARP
entries. Then the switch can learn ARP entries again.
3. Verify that route entries are correct:
The port is faulty?
No
Yes
Yes
Troubleshoot the
port
End
No
Yes
Layer 3 packet loss
ARP entries are correct?
Troubleshoot ARP
entries
Route entries are correct?
No
Yes
Resolved?
No
No
No
Yes
Yes
Resolved?
Resolved?
Contact the support
Troubleshoot
route entries

HPE FlexNetwork 5130 Series Specifications

General

Category	Network Switch
Ports	24 or 48 10/100/1000 ports
Uplink Ports	4 x SFP+ ports
Routing Protocol	Static routing, RIP, OSPF, BGP
PoE	Available on some models (PoE+)
Input Voltage	100-240 VAC
Operating Temperature	0°C to 45°C
Management	Web, CLI, SNMP
Jumbo Frame Support	Yes
VLANs	4094
Operating Humidity	5% to 95% (noncondensing)