368 | S-Series Debugging and Diagnostics
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Figure 14-11. Single Queue Application for S50N with Default Packet Pointers
Troubleshooting packet loss
The show hardware stack-unit command is intended primarily to troubleshoot packet loss.
• show hardware stack-unit cpu data-plane statistics
• show hardware stack-unit cpu party-bus statistics
• show hardware stack-unit 0-11 drops unit 0-1 port 0-63
• show hardware stack-unit 0-11 stack-port 48-51
• show hardware stack-unit 0-11 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 0-11 port-set 0-1
• show hardware layer3 qos stack-unit 0-7 port-set 0-1
• show hardware ipv6 {e.g.-acl |in-acl} stack-unit 0-11 port-set 0-1
• show hardware system-flow layer2 stack-unit 0-11 port-set 0-1 [counters]
• clear hardware stack-unit 0-11 counters
• clear hardware stack-unit 0-11 unit 0-1 counters
• clear hardware stack-unit 0-11 cpu data-plane statistics
• clear hardware stack-unit 0-11 cpu party-bus statistics
• clear hardware stack-unit 0-11 stack-port 48-51
Displaying Drop Counters
The show hardware stack-unit 0–11 drops [unit 0 [port 0–63]] command assists in identifying which stack unit,
port pipe, and port is experiencing internal drops, as shown in Figure 14-12 and Figure 14-13.
!
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
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