32
Packet dropping
Symptom
An Ethernet interface drops packets.
Solution
To resolve the problem:
1.
Verify that the two ends are always in up state. Use the
reset counter interface
command to
clear the traffic statistics for the interface.
2.
Use the
display interface
command to view the traffic statistics for the interface to determine
whether the inbound and outbound traffic statistics have increased. Check the inbound and
outbound traffic statistics for the peer interface. Determine whether the input and output errors
for the interface have increased constantly.
3.
If the problem persists, collect the following information for the interface:
For interfaces on a FIP-300, FIP-310, or SAP-16EXP LPU, execute the
display hardware
internal poe
slot
slot
-number
statistics
command in probe view to collect the interface
statistics.
For interfaces on a HIM of a FIP-240 LPU, execute the
display hardware internal himadp
slot
slot-number
cnt
command in probe view to collect the interface statistics.
Execute the
display hardware internal module interface-name interface-number
statistics
command in probe view to collect the interface statistics.
Execute the
display hardware internal module
interface-name interface-number
status
command in probe view to collect the status information.
Execute the
display hardware internal module
interface-name interface-number
reg
1
command in probe view to collect the FPGA information.
Execute the
display hardware internal module
interface-name interface-number
reg
2
command in probe view to collect the MAC information.
Execute the
display hardware internal module
interface-name interface-number
reg
3
command in probe view to collect the PHY information.
Execute the
display hardware internal ibd pkt-info slot slot-number slot-number
command in probe view to collect inter-card packet statistics.
4.
Contact H3C Support.
Related commands
This section lists the commands that you might use for troubleshooting ports.
Command
Description
debugging arp packet
Enables ARP debugging.
debugging ip icmp
Enables ICMP debugging.
debugging ip packet
Enables IP debugging.
display arp all
Displays all ARP entries.
display counters rate inbound interface
Displays inbound traffic rate statistics.
display counters rate outbound interface
Displays outbound traffic rate statistics.
