Troubleshooting guide

3. Troubleshooting Functional Failures During Operation
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Figure 3-4: Analysis flowchart
Table 3-17: Failure analysis method for multicast forwarding
No. Items to check and commands Action
1Use the
show logging command
and check whether a failure has
occurred.
Check the following:
• Check whether log information about a physical fault has been recorded.
2 Make sure filters and QoS control
are configured correctly.
Certain packets might have been discarded either by filtering or by
bandwidth monitoring, drop control, or the QoS control shaper. Make sure
that the setting conditions for filters and QoS control in the configuration are
correct, and that bandwidth monitoring, drop control, or the shaper is used
appropriately in the system configuration.
For details about the procedure, see 3.25.1 Checking the filters and QoS
configuration information.