11
Question
Command or method
Result
Remarks
configuration file and
specifies the file as the
next-startup configuration
file on each MPU.
CPU and memory usage
Does the CPU usage
change rate of any cards
(MPUs and LPUs) 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 of a card
sustains a usage level of
over 60% or has a change
rate higher than 10%,
execute the
debug ip
packet
command to view
the packets delivered to the
CPU for analysis.
Does the memory usage of
the MPUs and service
modules exceed 60%?
display memory
□
OK
□
Not OK
□
Not related
If memory usage exceeds
60%, execute the
display
system internal
kernel memory pool
slot
command in probe
view to identify the module
that is using the most
memory.
Ports
Is there a port operating in
half-duplex mode?
display interface
brief
□
OK
□
Not OK
□
Not related
If there is a port operating
in half-duplex mode,
identify whether the two
ends are consistent in
configuration.
Is flow control
unnecessarily enabled on
ports?
display
current-configuration
interface
□
OK
□
Not OK
□
Not related
Execute the
undo
flow-control
command
if flow control is not needed
on a port.
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.
Does the port change
between an up and down
state frequently?
display logbuffer
□
OK
□
Not OK
□
Not related
If the port state flaps, check
for the following errors:
•
Link and
optical-electrical
converter errors.
•
Optical power
threshold crossing
events if the port is a
fiber port.
•
Port setting
inconsistencies with
