Administrator Guide

Using a Pre-Dened Buer Prole
The Dell Networking OS provides two pre-dened buer proles, one for single-queue (for example, non-quality-of-service [QoS])
applications, and one for four-queue (for example, QoS) applications.
You must reload the system for the global buer prole to take eect, a message similar to the following displays: % Info: For
the global pre-defined buffer profile to take effect, please save the config and reload the
system..
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: The buer prole does not returned to the default, 4Q. 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 Gi 0/1. Please remove global pre-defined
buffer profile.
If the default buer prole (4Q) is active, the system displays an error message instructing you to remove the default conguration
using the no buffer-profile global command.
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]
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 0 port-set 0 buffer-policy fsqueue-hig
buffer fp-uplink stack-unit 0 port-set 1 buffer-policy fsqueue-hig
!
Interface range gi 0/1 - 48
buffer-policy fsqueue-fp
Dell#show run int Tengig 0/10
!
interface TenGigabitEthernet 0/10
Debugging and Diagnostics
277