How do I verify packet drops on a Nexus 7000 Schalten?

Verify the Rx Pauseand TailDropsfields from the output of the show interface {/}and show hardware internal errors module module #commands for the module with these ports.

For example:

Nexus7K#show interface e7/25Ethernet7/25 is up  !--- Output suppressed     input rate 1.54 Kbps, 2 pps; output rate 6.29 Mbit/s, 3.66 Kpps   RX     156464190 unicast packets  0 multicast packets  585 broadcast packets     156464775 input packets  11172338513 Bytes     0 jumbo packets  0 storm suppression packets     0 runts  0 giants  0 CRC  0 no buffer     0 input error  0 short frame  0 overrun   0 underrun  0 ignored     0 watchdog  0 bad etype drop  0 bad proto drop  0 if down drop     0 input with dribble  0 input discard    7798999 Rx pause   TX     6365127464 unicast packets  6240536 multicast packets  2290164 broadcast packets     6373658164 output packets  8294188005962 Bytes     0 jumbo packets     0 output error  0 collision  0 deferred  0 late collision     0 lost carrier  0 no carrier  0 babble    0 Tx pause

The pauses on e7/25 indicate that the server is having difficulty keeping up with the amount of traffic sent to it.

Nexus7k#show hardware internal erroe module 2 | include     r2d2_tx_taildrop_drop_ctr_q337936 r2d2_tx_taildrop_drop_ctr_q3                  0000000199022704   2 - 37938 r2d2_tx_taildrop_drop_ctr_q3                  0000000199942292   4 - 37941 r2d2_tx_taildrop_drop_ctr_q3                  0000000199002223   5 - 37941 r2d2_tx_taildrop_drop_ctr_q3                  0000000174798985   17 -

This indicates that the amount of traffic sent to these device was too much for the interface itself to transmit. Since each interface was configured as a trunk allowing all VLANs and multicast/broadcast traffic counters were low, it appears there is a lot of unicast flooding that may be causing drops for these interfaces.