Service Manual

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 cpu data-plane statistics
•
show hardware stack-unit cpu party-bus statistics
•
show hardware stack-unit stack-unit-number drops unit 0-1 port port-number
•
show hardware stack-unit stack-unit-number stack-port 48-51
•
show hardware stack-unit stack-unit-number unit 0-1 {counters | details | port-stats
[detail] | register | execute-shell-cmd | ipmc-replication | table-dump}
•
show hardware {layer2| layer3} {e.g. acl |in acl} stack-unit stack-unit-number port-set
0-1
•
show hardware layer3 qos stack-unit stack-unit-number port-set 0-1
•
show hardware ipv6 {e.g.-acl |in-acl} stack-unit stack-unit-number port-set-number
•
show hardware system-flow layer2 stack-unit stack-unit-number port-set—number [counters]
•
clear hardware stack-unit stack-unit-number counters
898
S-Series Debugging and Diagnostics