Failure To Forward Traffic; Symptom; Solution - HP HSR6600 Troubleshooting Manual

The buffer pool has a state of Empty or Depleted.

The buffer pool cannot be recovered.
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9. In probe view, execute the display hardware internal fdp flow slot slot-num statistic command to
view statistics about the Layer 3 packets sent to the CPU. If packet error or loss occurs, contact HP
Support for information about the causes.
10. 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 HP Support to diagnose the problem.
11. 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.

Failure to forward traffic

Symptom

The router that hosts the FIP-600 LPU failed to forward traffic as an intermediate device.

Solution

To resolve the problem:
1. Ping a directly connected device from the FIP-600 LPU. If the ping operation fails, follow the
procedure described in
2. 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 of the CPU decreases significantly, the packets are dropped or

transparently sent to the MPU.
If the packet output rate and input rate are approximately the same, the packets are sent to the

CPU for normal forwarding.
If the packet input rate is significantly lower than the packet output rate, the packets are not sent

to the CPU.
3. 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.
Contact HP Support about information about why the packets are sent to the CPU.
4. If the packets are dropped, perform the following tasks:
Execute the display hardware internal fdp cdat slot slot-num statistics 8 command in probe

view to view the packet loss statistics. Contact HP Support to learn the causes for the packet loss.
Execute the display hardware internal fdp flow slot slot-num statistic command to view statistics

about the Layer 3 packets sent to the CPU. If packet error or drop exists, contact HP Support to
diagnose the problem.
"Failure to ping a directly connected
10
device" to resolve the problem.