Service Manual

Dell Networking OS Behavior: After you congure buer-prole global 1Q, the message displays during every bootup. Only one reboot is
required for the conguration to take eect; afterward you may ignore this bootup message.
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 1/1/1. 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
!
buffer-profile fp fsqueue-fp
buffer dedicated queue0 3 queue1 3 queue2 3 queue3 3 queue4 3 queue5 3 queue6 3 queue7 3
buffer dynamic 1256
!
buffer-profile fp fsqueue-hig
buffer dedicated queue0 3 queue1 3 queue2 3 queue3 3 queue4 3 queue5 3 queue6 3 queue7 3
buffer dynamic 1256
!
buffer fp-uplink stack-unit 1 port-set 0 buffer-policy fsqueue-hig
buffer fp-uplink stack-unit 1 port-set 1 buffer-policy fsqueue-hig
!
Interface range tengigabitethernet 1/1 - 18/1
buffer-policy fsqueue-fp
Dell#show run interface tengigabitethernet 1/10/1
!
interface TenGigabitEthernet 1/10/1
no ip address
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
Debugging and Diagnostics
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