5
Question
Command or method
Result
Remarks
•
The power modules
are operating
correctly.
The
display power
command shows that
their state is Normal.
Are the LEDs all displaying
correct statuses?
Visually check the status of
LEDs on each device.
□
OK
□
Not OK
□
Not related
The LED shows the status
of the device:
•
Steady green
—The
switch is operating
correctly.
•
Steady red
—The
switch has failed to
pass POST or has
problems such as fan
failure.
•
Off
—The switch is
powered off or has
failed to start up.
CPU and memory usage
Does the CPU usage
change rate exceed 10%?
Does the sustained CPU
usage exceed 60%?
display cpu-usage
□
OK
□
Not OK
□
Not related
Execute the
display
cpu-usage
command
repeatedly.
If the CPU sustains a
usage level of over 60% or
has a change rate higher
than 10%, execute the
debugging ip packet
command to view the
packets delivered to the
CPU for analysis.
Does the memory usage
exceed 60%?
display memory
□
OK
□
Not OK
□
Not related
If memory usage exceeds
60%, execute the
display
memory
command to
identify the module that is
using the most memory.
Ports
Is half duplex used in port
negotiation?
display interface
brief
□
OK
□
Not OK
□
Not related
If the duplex mode of a port
is half, verify that the peer
port uses the same duplex
mode.
Is flow control
unnecessarily enabled on
ports?
Verify the port settings.
□
OK
□
Not OK
□
Not related
Disable flow control on the
ports.
Are large numbers of error
packets generated
continuously
in the
outbound
or
inbound
direction of the port?
display interface
□
OK
□
Not OK
□
Not related
If an error counter displays
a non-zero value and the
value is increasing, check
for the following errors:
•
Link and
optical-electrical
converter errors.
•
Port setting
inconsistencies with
the peer port.