Reference Guide

S-Series Debugging and Diagnostics | 229
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 0-49
• 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
Table 11-2. show hardware Commands
Command Description
show hardware stack-unit {0-11} cpu
management statistics
View internal interface status of the stack-unit CPU port which connects to
the external management interface.
show hardware stack-unit {0-11} cpu
data-plane statistics
View driver-level statistics for the data-plane port on the CPU for the
specified stack-unit. It provides insight into the packet types entering the
CPU to see whether CPU-bound traffic is internal (IPC traffic) or network
control traffic, which the CPU must process.
show hardware stack-unit {0-11} cpu
party-bus statistics
View input and output statistics on the party bus, which carries
inter-process communication traffic between CPUs.
show hardware stack-unit {0-11} drops unit
{0-1} port {0-1}
View the ingress and egress internal packet-drop counters, MAC counters
drop, and FP packet drops for the stack unit on per port basis. It assists in
identifying the stack unit/port pipe/port that may experience internal drops.
show hardware stack-unit {0-11} stack-port
{0-47}
View the input and output statistics for a stack-port interface.
show hardware stack-unit {0-11} unit {0-1}
counters
View the counters in the field processors of the stack unit.
show hardware stack-unit {0-11} unit {0-1}
details
View the details of the the FP Devices, and Hi gig ports on the stack-unit.
show hardware stack-unit {0-11} unit {0-1}
execute-shell-cmd {command}
Execute a specified bShell commands from the CLI without going into the
bShell.
show hardware stack-unit {0-11} unit {0-1}
ipmc-replication
View the Multicast IPMC replication table from the bShell.
show hardware stack-unit {0-11} unit {0-1}
port-stats [detail]
View the internal statistics for each port-pipe (unit) on per port basis.
show hardware stack-unit {0-11} unit {0-1}
register
View the stack-unit internal registers for each port-pipe.
show hardware stack-unit {0-11} unit {0-1}
table-dump {table name}
View the tables from the bShell through the CLI without going into the
bShell.