Table of Contents
Advertisement
8.
In probe view, execute the display hardware internal fdp cdat slot slot-num status 80
command to view statistics of the logic module. If the FIFO status is not empty when there is no
traffic, the FIFO queue is congested. Contact H3C Support to diagnose the problem.
9.
If the logic module and the CPU can correctly send and receive packets, use the software
forwarding diagnostic techniques to diagnose the problem. For example, verity that the correct
routing entry exists in the routing table.
10. If the problem persists, contact H3C Support.
Packet loss
Symptom
A large number of packets are dropped by a FIP-600 module during the forwarding process.
Solution
To resolve the problem:
1.
In probe view, execute the display hardware internal fdp cdat slot slot-num statistics
command to view the packet statistics of the CPU data channel. The following conditions might
exist:
If the packet output rate and input rate are approximately the same, the packets are
forwarded by the logic module to the CPU for normal forwarding.
If the packet input rate is significantly lower than the output rate, the packets are not sent to
the CPU.
2.
If the packets are sent to the CPU, execute the following command in probe view to view the
debugging information of packets sent and received by the CPU data channel interface:
debugging hardware internal fdp cdat slot slot-num debug { ingress | egress }
The first 32 bytes represent the header fields, followed by 32 bytes of payload. You can filter the
packets to be displayed based on criteria such as interface or packet length.
To learn the causes why the packets are sent to the CPU, contact H3C Support.
3.
If the packets are dropped by the logic module before being sent to the CPU, execute the
display hardware internal fdp cdat slot slot-num statistics 8 command in probe view to view
the packet loss statistics of the logic module. Contact H3C Support to learn the causes for the
packet loss.
4.
In probe view, execute the display hardware internal fdp cdat slot slot-num statistics 80
command to view statistics of the logic module. If packet drops exist, contact H3C Support to
learn the causes for the packet drops.
5.
If the problem persists, contact H3C Support.
Related commands
This section lists the commands that you might use for troubleshooting FIP-600 modules.
Command
debugging hardware internal fdp cdat slot
slot-num bypass
debugging hardware internal fdp cdat slot
slot-num debug
Description
Enables the bypass logic feature.
Enables packet debugging for the CPU data
channel.
11
Advertisement
Table of Contents
Troubleshooting
