Install Guide

● Apply one of the predefined buffer profiles for all port pipes in the system.
CONFIGURATION mode
buffer-profile global [1Q|4Q]
If the default buffer profile dynamic is active, Dell EMC Networking OS displays an error message instructing you to remove
the default configuration using the no buffer-profile global command.
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 stack-unit-number cpu data-plane statistics
● show hardware stack-unit stack-unit-number cpu party-bus statistics
● show hardware stack-unit stack-unit-number drops unit unit-number
● show hardware stack-unit stack-unit-number unit unit-number {counters | details | port-
stats [detail] | register | ipmc-replication | table-dump}
● show hardware {ip | ipv6 | mac} {eg-acl | in-acl} stack-unit stack-unit-number port-set 0
pipeline 0-3
● show hardware ip qos stack-unit stack-unit-number port-set 0
● show hardware system-flow layer2 stack-unit stack-unit-number port-set 0 {counters |
pipeline 0-3}
● show hardware drops interface interface
● show hardware buffer-stats-snapshot resource interface interface
● 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
Displaying Drop Counters
To display drop counters, use the following commands.
● Identify which stack unit and port pipe is experiencing internal drops.
show hardware stack-unit stack-unit-number drops [unit unit-number]
● Identify which interface is experiencing internal drops.
show hardware drops interface interface
Example of show hardware drops interface
interface
Dataplane Statistics
The show hardware stack-unit cpu data-plane statistics command provides insight into the packet types
coming to the CPU. The show hardware stack-unit cpu party-bus statistics command displays input and
output statistics on the party bus, which carries inter-process communication traffic between CPUs.
The command output in the following example has been augmented, providing detailed RX/ TX packet statistics on a per-queue
basis. The objective is to see whether CPU-bound traffic is internal (so-called party bus or IPC traffic) or network control
traffic, which the CPU must process.
Debugging and Diagnostics
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