Users Guide

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.
If the default buffer profile (4Q) is active, the system displays an error message instructing you to remove the default configuration using
the no buffer-profile global command.
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]
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 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
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 0–5 cpu data-plane statistics
•
show hardware stack-unit 0–5 cpu party-bus statistics
•
show hardware stack-unit 0-5 drops unit 0-0 port 1–56
•
show hardware stack-unit 0-5 stack-port 33–56
•
show hardware stack-unit 0-5 unit 0-0 {counters | details | port-stats [detail] | register |
ipmc-replication | table-dump}:
•
show hardware {layer2| layer3} {eg acl |in acl} stack-unit 0-5 port-set 0-0
•
show hardware layer3 qos stack-unit 0-5 port-set 0-0
•
show hardware system-flow layer2 stack-unit 0-5 port-set 0-1 [counters]
•
show hardware drops interface [range] interface
•
show hardware stack-unit <id> buffer-stats-snapshot unit <id> resource x
338
Debugging and Diagnostics