Users Guide

Dell Networking OS Behavior: If you congure 1Q, save the running-cong to the startup-cong, and then delete the startup-cong and
reload the chassis. The only way to return to the default buer prole is to remove the 1Q prole congured and then reload the chassis.
If you have already applied a custom buer prole on an interface, the buffer-profile global command fails and a message similar
to the following displays: % Error: User-defined buffer profile already applied. Failed to apply global
pre-defined buffer profile. Please remove all user-defined buffer profiles.
Similarly, when you congure buffer-profile global, you cannot not apply a buer prole on any single interface. A message similar
to the following displays: % Error: Global pre-defined buffer profile already applied. Failed to apply
user-defined buffer profile on interface Te 1/1. Please remove global pre-defined buffer
profile.
To apply a predened buer prole, use the following command.
• Apply one of the pre-dened buer proles for all port pipes in the system.
CONFIGURATION mode
buffer-profile global [1Q|4Q]
If the default buer prole dynamic is active, Dell Networking OS displays an error message instructing you to remove the default
conguration using the no buffer-profile global command.
Sample Buer Prole Conguration
The two general types of network environments are sustained data transfers and voice/data.
Dell Networking recommends a single-queue approach for data transfers.
Example of a Single Queue Application with Default Packet Pointers
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} |
detail} 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
Debugging and Diagnostics
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