Reference Guide

FTOS Behavior: If you configure 1Q, save the running-config to the startup-config, and then delete the startup-config and
reload the chassis. The only way to return to the default buffer profile is to remove the 1Q profile configured and then
reload the chassis.
If you have already applied a custom buffer profile 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 configure buffer-profile global, you cannot not apply a buffer profile 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.
To apply a predefined buffer profile, use the following command.
• Apply one of the pre-defined buffer profiles for all port pipes in the system.
CONFIGURATION mode
buffer-profile global [1Q|4Q]
If the default buffer profile dynamic is active, FTOS displays an error message instructing you to remove the default
configuration using the no buffer-profile global command.
Sample Buffer Profile Configuration
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 for S50N 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
FTOS#sho run int gi 0/10
!
interface GigabitEthernet 0/10
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.
909