Dell 9.7(0.0) manual … snip … Unit 0 port 104 interface Te 0/124 Stack-unit

UCAST	9	0
UCAST	10	0
UCAST	11	0
MCAST	0	0
MCAST	1	0
MCAST	2	0
MCAST	3	0
MCAST	4	0
MCAST	5	0
MCAST	6	0
MCAST	7	0
MCAST	8	0

<… snip …>		0	unit: 0 port: 104 (interface Te 0/124)
Stack-unit:
---------------------------------------
PG#	SHARED CELLS			HEADROOM CELLS
---------------------------------------
0	0			0
1	0			0
2	0			0
3	0			0
4	0			0
5	0			0
6	0			0
7	0			0
---------------------------------------
Q# TYPE		Q#	TOTAL BUFFERED CELLS
---------------------------------------
UCAST		0	0
UCAST		1	0
UCAST		2	0
UCAST		3	0
UCAST		4	0
UCAST		5	0
UCAST		6	0
UCAST		7	0
UCAST		8	0
UCAST		9	0
UCAST		10	0
UCAST		11	1
MCAST		0	0
MCAST		1	0
MCAST		2	0
MCAST		3	0
MCAST		4	0
MCAST		5	0
MCAST		6	0
MCAST		7	0
MCAST		8	0

To determine the port that is congested and monitor all queues (including multicast and unicast queues] only on that port:

Dell#$show hardware stack-unit 0 buffer-stats-snapshot unit 0

resource port		1 queue all
Stack-unit:	0	unit: 0 port: 1 (interface Fo 0/0)
---------------------------------------
Q# TYPE	Q#	TOTAL BUFFERED CELLS
---------------------------------------
UCAST	0	0
UCAST	1	0
UCAST	2	0

Data Center Bridging (DCB) 515