Hardware
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All hardware problems generate alarms that generate SNMP traps.
Review the trap history.
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show snmp trap history
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Check the status of the PFUs. the command output indicates the
power level for the cards in the chassis. All active cards should be in an "ON"
state.
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show power chassis
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Check the power status of an individual chassis.
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show power all
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View the status of the fan trays.
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show fans
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View the LED status for all installed cards. All LEDs for active
cards should be green.
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show leds all
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Checking the temperatures confirms that all cards and fan trays
are operating within safe ranges to ensure hardware efficiency.
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show temperature
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Physical Layer
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View mapping of the line cards-to-controlling application cards.
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show card mappings
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View a listing
of all installed application cards in a chassis.
Determine if
all required cards are in active or standby state and not offline.
Displays
include slot numbers, card type, operational state, and attach information.
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show card table
show card table all
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Display a listing of installed line cards with card type, state,
and attach information. Run this command to ensure that all required cards are
in Active/Standby state. No card should be in OFFLINE state.
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show linecard table
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View the number and status of physical ports on each line card.
Output indicates Link and Operation state for all interfaces – Up or Down.
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show port table all
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Verify CPU usage and memory.
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show cpu table
show cpu info
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System Status and
Performance
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Check a summary of CPU state and load, memory and CPU usage.
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show cpu table
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Check NPU utilization within the chassis.
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show npu table
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Check availability of resources for sessions.
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show resources utilization table
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Review session statistics, such as connects, rejects, hand-offs,
collected in 15-minute intervals.
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show session counters historical
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View duration, statistics, and state for active call sessions.
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show session duration
show session progress
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Display statistics for the Session Manager.
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show session subsystem facility sessmgr all
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Check the amount of time that the system has been operational
since the last downtime (maintenance or other). This confirms that the system
has not rebooted recently.
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show system uptime
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Verify the status of the configured NTP servers. Node time
should match the correct peer time with minimum jitter.
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show ntp status
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Check the current time of a chassis to compare network-wide
times for synchronisation or logging purposes. Ensure network accounting and/or
event records appear to have consistent timestamps.
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show clock universal
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View both active and inactive system event logs.
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show logs
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Check SNMP trap information. The trap history displays up to 400
time-stamped trap records that are stored in a buffer. Through the output, you
can observe any outstanding alarms on the node and contact the relevant team
for troubleshooting or proceed with SGSN troubleshooting guidelines.
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show snmp trap history
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Check the crash log. Use this command to determine if any
software tasks have restarted on the system.
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show crash list
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Check current alarms to verify system status
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show alarm outstanding all
show alarm all
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View system alarm statistics to gain an overall picture of the
system's alarm history.
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show alarm statistics
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If enabled, view statistics associated with Inter-Chassis
Session Recovery (ICSR).
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show srp info
show srp monitor
all
show srp checkpoint statistics
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