Concept Guide

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
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
•
show hardware buffer inteface interface{priority-group { id | all } | queue { id| all} ]
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
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Debugging and Diagnostics