Troubleshooting Packet Loss; Displaying Drop Counters - Dell S4820T Configuration Manual

OID String
.1.3.6.1.4.1.6027.3.16.1.1.5
.1.3.6.1.4.1.6027.3.16.1.1.6

Troubleshooting Packet Loss

The show hardware stack-unit command is intended primarily to troubleshoot packet loss.
To troubleshoot packet loss, use the following commands.
•
show hardware stack-unit cpu data-plane statistics
•
show hardware stack-unit cpu party-bus statistics
•
show hardware stack-unit stack-unit-number drops unit 0-1 port port-number
•
show hardware stack-unit stack-unit-number stack-port 48-51
•
show hardware stack-unit stack-unit-number unit 0-1 {counters | details |
port-stats [detail] | register | execute-shell-cmd | ipmc-replication |
table-dump}
•
show hardware {layer2| layer3} {e.g. acl |in acl} stack-unit stack-unit-
number port-set 0-1
•
show hardware layer3 qos stack-unit stack-unit-number port-set 0-1
•
show hardware ipv6 {e.g.-acl |in-acl} stack-unit stack-unit-number port-set-
number
•
show hardware system-flow layer2 stack-unit stack-unit-number port-set—number
[counters]
•
show hardware drops interface [range] interface
•
show hardware stack-unit <id> buffer-stats-snapshot unit <id> resource x
•
show hardware buffer inteface interface{priority-group { id | all } | queue
{ id| all} ] buffer-info
•
show hardware buffer-stats-snapshot resource interface interface{priority-
group { id | all } | queue { ucast{id | all}{ mcast {id | all} | all}
•
show hardware drops interface interface
•
clear hardware stack-unit stack-unit-number counters
•
clear hardware stack-unit stack-unit-number unit 0-1 counters
•
clear hardware stack-unit stack-unit-number cpu data-plane statistics
•
clear hardware stack-unit stack-unit-number cpu party-bus statistics
•
clear hardware stack-unit stack-unit-number stack-port 48-51

Displaying Drop Counters

To display drop counters, use the following commands.
• Identify which stack unit, port pipe, and port is experiencing internal drops.
show hardware stack-unit stack-unit-number drops [unit 0 [port port-number]]
S-Series Debugging and Diagnostics
OID Name
fpStatsPerPortTable
fpStatsPerCOSTable
Description
View the forwarding plane
statistics containing the packet
buffer usage per port per stack
unit.
View the forwarding plane
statistics containing the packet
buffer statistics per COS per port.
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