Reference Guide

Debugging and Diagnostics | 237
The S60 switch has two ASICS; each physical port on the ASICS has 8 virtual queues for unicast traffic.
There are a total of 53 ports, including the CPU ports which result in 440 total virtual queues. Virtual
queues 0 through 431 are for unicast traffic, while virtual queues 432 through 440 are used for multicast
traffic on the entire system. Each of the 8 virtual queues are used for each corresponding CoS value.
Figure 10-12. Viewing multicast traffic on virtual queues.
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
gport:(0x640001b0) cos=0
GreenAcceptedPkts=219055937 GreenAcceptedBytes=288715724966
GreenMarkedPkts=0 GreenMarkedBytes=0
GreenDiscardPkts=0 GreenDiscardBytes=0
YellowAcceptedPkts=0 YellowAcceptedBytes=0
YellowMarkedPkts=0 YellowMarkedBytes=0
YellowDiscardPkts=0 YellowDiscardBytes=0
RedAcceptedPkts=0 RedAcceptedBytes=0
RedMarkedPkts=0 RedMarkedBytes=0
RedDiscardPkts=0 RedDiscardBytes=0
BlackAcceptedPkts=0 BlackAcceptedBytes=0
BlackMarkedPkts=0 BlackMarkedBytes=0
BlackDiscardPkts=0 BlackDiscardBytes=0
NonWredDroppedPkts=0 NonWredDroppedBytes=0
OverSubTtlDrpdPkts=0 OverSubTtlDrpdBytes=0
OverSubGuarDrpdPkts=176139 OverSubGuarDrpdBytes=232151202
<TAIL drops seen after maximum buffer utilization>
DequeuedPkts=146366795 DequeuedBytes=191447767860
Gport nCos Type Modid Port
Basequeue
---------------------------------------------------------------------------------
------------
0x640001b0 8 Subscriber Multicast Queue Group 10000 0 432
cos mode weight kbits_sec_min kbits_sec_max
flags
0 BCM_COSQ_AF0 1 1000000 0
1
1 BCM_COSQ_AF0 2 1000000 0
1
2 BCM_COSQ_AF0 4 1000000 0
1
3 BCM_COSQ_AF0 8 1000000 0
1
4 BCM_COSQ_AF0 127 1000000 0
1
5 BCM_COSQ_AF0 127 1000000 0
1
6 BCM_COSQ_AF0 127 1000000 0
1
7 expedited forwarding 0 0 0
0